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Mu Naushad - One of the best experts on this subject based on the ideXlab platform.
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synthesis and ion exchange properties of graphene th iv phosphate composite cation exchanger its applications in the selective separation of lead metal ions
International Journal of Environmental Research and Public Health, 2017Co-Authors: Tauseef Ahmad Rangreez, Abdullah M Asiri, Basma G Alhogbi, Mu NaushadAbstract:In this study, graphene Th(IV) phosphate was prepared by sol-gel precipitation method. The Ion-Exchange behavior of this catIon-Exchanger was studied by investigating properties like Ion-Exchange Capacity for various metal ions, the effect of eluent concentration, elution behavior, and thermal effect on Ion-Exchange Capacity (IEC). Several physicochemical properties as Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) study, thermal studies, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) studies were also carried out. The material possessed an IEC of 1.56 meq·dry·g-1 of the exchanger and was found to be nano-composite. The selectivity studies showed that the material is selective towards Pb(II) ions. The selectivity of this catIon-Exchanger was demonstrated in the binary separation of Pb(II) ions from mixture with other metal ions. The recovery was found to be both quantitative and reproducible.
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synthesis and characterization of a new nanocomposite cation exchanger polyacrylamide ce iv silicophosphate photocatalytic and antimicrobial applications
Journal of Industrial and Engineering Chemistry, 2014Co-Authors: Deepak Pathania, Mu Naushad, Gaurav Sharma, Amit KumarAbstract:Abstract A nanocomposite cation exchanger polyacrylamide Ce(IV) silicophosphate (PAM–CSP)was prepared via sol–gel method. The ion exchange Capacity of nanocomposite PAM–CSP was found better (1.42 mequiv. g−1) than its inorganic counterpart Ce(IV) silicophosphate (CSP, 0.84 mequiv. g−1). The material was characterized using different techniques such as FTIR, XRD, SEM and TEM. The various physiochemical properties such as pH titration, elution concentration and elution behavior studies of PAM–CSP were studied. The pH titration studies clearly indicated the bifunctional nature of nanocomposite ion exchanger. The effect of temperature on the ion exchange Capacity of the material was also investigated. The photocatalytic activity of PAM–CSP was investigated for the degradation of methylene blue dye which revealed that 83.40% of MB was degraded in 5 h. The antimicrobial activities of PAM–CSP were also ascertained against Escherichia coli and Staphylococcus aureus.
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fabrication characterization and antimicrobial activity of polyaniline th iv tungstomolybdophosphate nanocomposite material efficient removal of toxic metal ions from water
Chemical Engineering Journal, 2014Co-Authors: Gaurav Sharma, Mu Naushad, Deepak Pathania, N.c. KothiyalAbstract:Abstract Polyaniline Th(IV) tungstomolybdophosphate (PANI/TWMP) nanocomposite ion exchanger was prepared via sol–gel method by mixing polyaniline gel into the inorganic precipitates of Th(IV) tungstomolybdophosphate (TWMP). The PANI/TWMP nanocomposite ion exchanger was well characterized using FTIR, XRD, SEM and TEM techniques. Thermal stability, elution behavior, effect of eluent concentration and pH titrations curves of PANI/TWMP were also investigated. The study revealed that PANI/TWMP nancomposite had higher ion exchange Capacity (1.07 meq/g) compared to its inorganic counterpart TWMP (0.78 meq/g) and organic counterpart PANI (0.30 meq/g). The PANI/TWMP nanocomposite ion exchanger was found thermally stable and retained 53.27% ion exchange Capacity upto 400 °C. On the basis of selectivity studies, some important binary separations were also achieved to explore the potential application of PANI/TWMP in the environmental analysis of toxic heavy metals. PANI/TWMP was also effectively used in separations of Cu 2+ and Pb 2+ ions from synthetic mixtures of metal ions.
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Adsorption of cadmium ion using a new composite catIon-Exchanger polyaniline Sn(IV) silicate: kinetics, thermodynamic and isotherm studies
International Journal of Environmental Science and Technology, 2013Co-Authors: Mu Naushad, Z. A. Al-othman, M IslamAbstract:A new organic–inorganic composite cation exchanger polyaniline Sn(IV) silicate has been synthesized. The physicochemical properties of this ion exchanger were determined using different analytical techniques including fourier transform infrared spectroscopy, simultaneous thermogravimetry–differential thermogravimetry analyses, X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy and elemental analysis studies. Ion exchange Capacity and effect of heating temperature on ion exchange Capacity were also carried out on this ion exchange material. Adsorption properties for different metal ions have been investigated and the results revealed that polyaniline Sn(IV) silicate had the highest adsorption Capacity for Cd^2+ ion. It’s selectivity was tested by achieving some important binary separations. Dependence of adsorption on contact time, temperature, pH of the solution and exchanger dose had been studied to achieve the optimum conditions. Adsorption kinetic study showed that the adsorption process followed the first order kinetics. Adsorption data were fitted to linearly transformed Langmuir isotherm with R ^2 (correlation coefficient) >0.99. The maximum removal of Cd^2+ was found at pH 9. The adsorption was fast and the equilibrium established within 40 min. Thermodynamic parameters viz- entropy change, enthalpy change and Gibb’s free energy change were also calculated.
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development characterization and ion exchange thermodynamics for a new crystalline composite cation exchange material application for the removal of pb2 ion from a standard sample rompin hematite
Journal of Inorganic and Organometallic Polymers and Materials, 2011Co-Authors: Z A Alothman, Mu Naushad, A NilchiAbstract:A new crystalline organic–inorganic composite cation exchanger polyaniline Sn(IV) molybdate was developed by mixing polyaniline into the inorganic precipitate of Sn(IV) molybdate. This material was characterized using Fourier transform infrared spectroscopy (FTIR), simultaneous thermogravimetry–differential thermogravimetry (TGA–DTA), X-ray, scanning electron microscopy (SEM) and elemental analysis studies. Ion-Exchange Capacity, effect of calcinations (100–500 °C) on ion exchange Capacity, pH-titrations, chemical stability, elution and distribution behavior were also carried on this material. On the basis of distribution studies, the material was found to be highly selective for Pb2+ ion and its selectivity was tested by achieving some important binary and ternary separations. In order to demonstrate the practical utility of the material, quantitative separations of Pb2+ from a standard reference material (Rompin Hematite) of lead have been achieved. Thermodynamic parameters viz- entropy change (ΔS), enthalpy change (ΔH) and Gibb’s free energy change (ΔG) were also calculated.
Deepak Pathania - One of the best experts on this subject based on the ideXlab platform.
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sol gel synthesis of polyacrylamide stannic arsenate nanocomposite ion exchanger binary separations and enhanced photo catalytic activity
SN Applied Sciences, 2019Co-Authors: Ajay Kumar, Gaurav Sharma, Manita Thakur, Deepak PathaniaAbstract:In this, polyacrylamide-stannic arsenate nanocomposite (PA/SANC) ion exchanger has been synthesized using sol–gel technique. Different instrumental techniques were employed to characterize the PA/SANC. XRD results illustrate semi-crystalline nature of material. TEM images confirmed that the size of PA/SANC was in nano-range. Nanocomposite have superior physicochemical properties including ion exchange Capacity, elution behavior, effect of eluent concentration, distribution coefficient (Kd), effect of temperature and pH study. PA/SANC have 0.92 meq/g value of ion exchange Capacity as compared to inorganic part (0.39 meq/g). On the basis of Kd values, it has been found that nanocomposite was highly selective for Mg(II) ions (Kd = 222.90). PA/SANC was also explored for binary separation of different metal pairs. PA/SANC degraded 86.22% of sunset yellow under 3 h of solar exposure.
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pectin zirconium iv silicophosphate nanocomposite ion exchanger photo catalysis heavy metal separation and antibacterial activity
Chemical Engineering Journal, 2015Co-Authors: Deepak Pathania, Gaurav Sharma, Rinku ThakurAbstract:Abstract Pectin @ zirconium (IV) silicophosphate nanocomposite (Pc/ZSPNC) ion exchanger has been prepared using simple sol–gel method. Pc/ZSPNC was characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR). Thermal stability, pH titration, elution concentration, elution behavior and distribution studies of Pc/ZSPNC were investigated. Pc/ZSPNC exhibited higher ion exchange Capacity of 1.01 mequiv/g compared to its inorganic counterpart (0.56 mequiv/g). Pc/ZSPNC was found thermally more stable and retained 59% ion exchange Capacity at 400 °C. Photo catalytic activity of Pc/ZSPNC was explored for the degradation of methylene blue (MB) dye in presence of solar irradiation. It was recorded that 97.02% of MB dye was degraded after 60 min of irradiation. The photo degradation of MB follows pseudo-first-order rate order kinetics with rate constant K of 0.0919 min−1 and R2 of 0.9977. Some binary separations of heavy metal ions were achieved on the column of Pc/ZSPNC ion exchanger based on distribution coefficient values. The antimicrobial activity of Pc/ZSPNC was also ascertained against Escherichia coli and Staphylococcus aureus bacteria using well diffusion method.
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synthesis characterization and analytical application of cellulose acetate tin iv molybdate nanocomposite ion exchanger binary separation of heavy metal ions and antimicrobial activity
Ionics, 2015Co-Authors: Deepak Pathania, Bhim Singh Rathore, Vinod Kumar Gupta, Shilpi Agarwal, Inderjeet Tyagi, Gaurav SharmaAbstract:A novel cellulose acetate-tin (VI) molybdate nanocomposite (CA/TMNC) exchanger was synthesized by sol-gel method and characterized using techniques such as Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and thermal analysis. Transmission electron microscopy (TEM) results indicated the formation of particles of nanodimensions. The ion exchange Capacity, pH titration, elution behavior, and distribution coefficient were also investigated. CA/TMNC showed enhanced ion exchange Capacity as compared to its inorganic counterpart. The distribution coefficient (K d ) values for different toxic heavy metal ion such as Pb+2, Cd+2, Mg+2, Zn+2, Co+2, Cu+2, Mn+2, Cr+3, Ni+2, and Fe+2 has been studied in double-distilled water by batch process. On the basis of K d values, four binary separation of the metal ions have been achieved on the column of CA/TMNC. The material is found to be selective for Pb2+ and Cd2+ ions; about more than 94 % of Pb2+ and 93 % of Cd2+ ions were recovered in each separation. The antibacterial activity of CA/TMNC was explored against Escherichia coli. The results confirmed the bacteriostatic nature of the CA/TMNC.
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synthesis and characterization of a new nanocomposite cation exchanger polyacrylamide ce iv silicophosphate photocatalytic and antimicrobial applications
Journal of Industrial and Engineering Chemistry, 2014Co-Authors: Deepak Pathania, Mu Naushad, Gaurav Sharma, Amit KumarAbstract:Abstract A nanocomposite cation exchanger polyacrylamide Ce(IV) silicophosphate (PAM–CSP)was prepared via sol–gel method. The ion exchange Capacity of nanocomposite PAM–CSP was found better (1.42 mequiv. g−1) than its inorganic counterpart Ce(IV) silicophosphate (CSP, 0.84 mequiv. g−1). The material was characterized using different techniques such as FTIR, XRD, SEM and TEM. The various physiochemical properties such as pH titration, elution concentration and elution behavior studies of PAM–CSP were studied. The pH titration studies clearly indicated the bifunctional nature of nanocomposite ion exchanger. The effect of temperature on the ion exchange Capacity of the material was also investigated. The photocatalytic activity of PAM–CSP was investigated for the degradation of methylene blue dye which revealed that 83.40% of MB was degraded in 5 h. The antimicrobial activities of PAM–CSP were also ascertained against Escherichia coli and Staphylococcus aureus.
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fabrication characterization and antimicrobial activity of polyaniline th iv tungstomolybdophosphate nanocomposite material efficient removal of toxic metal ions from water
Chemical Engineering Journal, 2014Co-Authors: Gaurav Sharma, Mu Naushad, Deepak Pathania, N.c. KothiyalAbstract:Abstract Polyaniline Th(IV) tungstomolybdophosphate (PANI/TWMP) nanocomposite ion exchanger was prepared via sol–gel method by mixing polyaniline gel into the inorganic precipitates of Th(IV) tungstomolybdophosphate (TWMP). The PANI/TWMP nanocomposite ion exchanger was well characterized using FTIR, XRD, SEM and TEM techniques. Thermal stability, elution behavior, effect of eluent concentration and pH titrations curves of PANI/TWMP were also investigated. The study revealed that PANI/TWMP nancomposite had higher ion exchange Capacity (1.07 meq/g) compared to its inorganic counterpart TWMP (0.78 meq/g) and organic counterpart PANI (0.30 meq/g). The PANI/TWMP nanocomposite ion exchanger was found thermally stable and retained 53.27% ion exchange Capacity upto 400 °C. On the basis of selectivity studies, some important binary separations were also achieved to explore the potential application of PANI/TWMP in the environmental analysis of toxic heavy metals. PANI/TWMP was also effectively used in separations of Cu 2+ and Pb 2+ ions from synthetic mixtures of metal ions.
Asif Ali Khan - One of the best experts on this subject based on the ideXlab platform.
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synthesis and characterization of polyaniline titanium iv phosphate cation exchange composite methanol sensor and isothermal stability in terms of dc electrical conductivity
Reactive & Functional Polymers, 2010Co-Authors: Asif Ali Khan, Mohd Khalid, Umair BaigAbstract:Abstract Electrically conductive composite of polyaniline–titanium(IV)phosphate (PANI–TiP) was synthesized by sol–gel method. The obtained composite was characterized by using Fourier transform infra red spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). The composite showed good Ion-Exchange Capacity and isothermal stability in terms of DC electrical conductivity retention at an ambient conditions below 100 °C. The composite material was investigated as alcohol vapors sensor and compared with blank polyaniline. The results showed that the composite was more selective and sensitive towards methanol vapors.
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preparation characterization and analytical applications of a new and novel electrically conducting fibrous type polymeric inorganic composite material polypyrrole th iv phosphate used as a cation exchanger and pb ii ion selective membrane electrode
Materials Research Bulletin, 2005Co-Authors: Asif Ali Khan, M. M. AlamAbstract:Abstract ‘Polymeric–inorganic’ composite type of catIon-Exchanger ‘polypyrrole Th(IV) phosphate’ was prepared by mixing polypyrrole into fibrous inorganic precipitate of Th(IV) phosphate. This type of composite possesses a new class of hybrid Ion-Exchangers with good Ion-Exchange Capacity (I.E.C.), higher stability, reproducibility and selectivity for heavy metals. The physicochemical properties of the material were determined using AAS, CHN elemental analysis, ICP-MS, UV-VIS spectrophotometry, FTIR, thermogravimetric analyses-differential thermal analysis (TGA-DTA), XRD and SEM studies. Ion-Exchange Capacity, pH-titrations, elution and distribution behavior etc. were also carried out to characterize the material. On the basis of distribution studies, the material was found to be highly selective for Pb(II), a heavy metal pollutant in the environment. Its selectivity was examined by achieving some important binary separations like Pb(II)–Zn(II), Pb(II)–Ni(II), Pb(II)–Cu(II) and Pb(II)–Cd(II) on its column that indicate its utility in environmental pollution control in one-way or other. This electroactive material also showed the DC electrical conductivity in the range of 10 −6 to 10 −4 S cm −1 . A new heterogeneous precipitate based selective ion-sensitive membrane electrode was developed by using this composite catIon-Exchanger for the determination of Pb(II) ions in solutions. The analytical utility of this electrode was established by employing it as an indicator electrode in electrometric titrations.
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new and novel organic inorganic type crystalline polypyrrolel polyantimonic acid composite system preparation characterization and analytical applications as a cation exchange material and hg ii ion selective membrane electrode
Analytica Chimica Acta, 2004Co-Authors: Asif Ali Khan, M. M. AlamAbstract:Abstract A new phase of ‘organic–inorganic’ composite system, polypyrrole polyantimonic acid, prepared by mixing the inorganic precipitate of hydrated antimony oxide with organic conducting polymer i.e., polypyrrole, providing a novel granular form hybrid catIon-Exchanger suitable for column operation with better chemical and thermal stability, good Ion-Exchange Capacity, reproducibility and selectivity for heavy metals. The physicochemical properties of this material were studied using elemental analyses, AAS, SEM, XRD, FTIR and simultaneous TGA-DTA studies. Ion-Exchange Capacity, pH-titrations, elution and distribution behavior were also carried out to characterize the material. Distribution studies revealed the catIon-Exchange material to be highly selective for Hg(II) and its selectivity was performed by achieving some important binary separations like Hg 2+ –Zn 2+ , Hg 2+ –Ni 2+ , Hg 2+ –Cu 2+ , Hg 2+ –Fe 3+ , Hg 2+ –Cd 2+ , Hg 2+ –Mg 2+ etc. on its column. Using this electroactive composite material, a new heterogeneous precipitate based selective ion-sensitive membrane electrode was fabricated for the determination of Hg(II) ions in solutions. The membrane electrode is mechanically stable, with a quick response time, and can be operated within a wide pH range. The selectivity coefficients for different cations determined by mixed solution method were found to be less than unity The electrode was also found to be satisfactory in electrometric titrations.
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synthesis characterization and analytical applications of a new and novel organic inorganic composite material as a cation exchanger and cd ii ion selective membrane electrode polyaniline sn iv tungstoarsenate
Reactive & Functional Polymers, 2003Co-Authors: Asif Ali Khan, M. M. AlamAbstract:Abstract Composite materials formed by the combination of inorganic ion exchangers of multivalent metal acid salts and organic conducting polymers (polyaniline, polypyrrole, polythiophene, etc.), providing a new class of ‘organic–inorganic’ hybrid ion exchangers with better mechanical and granulometric properties, good Ion-Exchange Capacity, higher stability, reproducibility and selectivity for heavy metals. Such a type of ion exchanger ‘polyaniline Sn(IV) tungstoarsenate’ was developed by mixing polyaniline into inorganic precipitate of Sn(IV) tungstoarsenate. This material was characterized using atomic absorption spectrometry, elemental analysis, Fourier transform infrared spectroscopy, simultaneous thermogravimetry–differential thermogravimetry, X-ray and scanning electron microscopy studies. Ion-Exchange Capacity, pH-titrations, elution and distribution behavior were also carried out to characterize the material. On the basis of distribution studies, the material was found to be highly selective for Cd(II) and its selectivity was tested by achieving some important binary separations like Cd(II)–Zn(II), Cd(II)–Pb(II), Cd(II)–Hg(II), Cd(II)–Cu(II), etc., on its column. Using this composite cation exchanger as electroactive material, a new heterogeneous precipitate based selective ion-sensitive membrane electrode was developed for the determination of Cd(II) ions in solutions. The membrane electrode is mechanically stable, with a quick response time, and can be operated within a wide pH range. The selectivity coefficients for different cations determined by mixed solution method were found to be less than unity. The electrode was also found to be satisfactory in electrometric titrations.
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synthesis and ion exchange behaviour of polyaniline sn iv arsenophosphate a polymeric inorganic ion exchanger
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 1999Co-Authors: Ram Niwas, Asif Ali Khan, K. G. VarshneyAbstract:Incorporation of a polymer material into an inorganic ion exchanger provides a class of hybrid ion exchangers with a good ion exchange Capacity, high stability, reproducibility and selectivity for heavy metals. Such a type of ion exchanger ‘polyaniline Sn(IV) arsenophosphate’ has been synthesized by mixing polyaniline into inorganic material. This material is characterized using X-ray, IR, TGA studies in addition to ion exchange Capacity, pH-titration, elution and distribution behaviour. On the basis of distribution studies, the material has been found to be highly selective for Pb(II). Kinetic study of exchange for the metal ions has been performed and some physical parameters such as self diffusion coefficient D0, energy Ea and entropy ΔS* of activation have been determined.
M. M. Alam - One of the best experts on this subject based on the ideXlab platform.
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preparation characterization and analytical applications of a new and novel electrically conducting fibrous type polymeric inorganic composite material polypyrrole th iv phosphate used as a cation exchanger and pb ii ion selective membrane electrode
Materials Research Bulletin, 2005Co-Authors: Asif Ali Khan, M. M. AlamAbstract:Abstract ‘Polymeric–inorganic’ composite type of catIon-Exchanger ‘polypyrrole Th(IV) phosphate’ was prepared by mixing polypyrrole into fibrous inorganic precipitate of Th(IV) phosphate. This type of composite possesses a new class of hybrid Ion-Exchangers with good Ion-Exchange Capacity (I.E.C.), higher stability, reproducibility and selectivity for heavy metals. The physicochemical properties of the material were determined using AAS, CHN elemental analysis, ICP-MS, UV-VIS spectrophotometry, FTIR, thermogravimetric analyses-differential thermal analysis (TGA-DTA), XRD and SEM studies. Ion-Exchange Capacity, pH-titrations, elution and distribution behavior etc. were also carried out to characterize the material. On the basis of distribution studies, the material was found to be highly selective for Pb(II), a heavy metal pollutant in the environment. Its selectivity was examined by achieving some important binary separations like Pb(II)–Zn(II), Pb(II)–Ni(II), Pb(II)–Cu(II) and Pb(II)–Cd(II) on its column that indicate its utility in environmental pollution control in one-way or other. This electroactive material also showed the DC electrical conductivity in the range of 10 −6 to 10 −4 S cm −1 . A new heterogeneous precipitate based selective ion-sensitive membrane electrode was developed by using this composite catIon-Exchanger for the determination of Pb(II) ions in solutions. The analytical utility of this electrode was established by employing it as an indicator electrode in electrometric titrations.
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new and novel organic inorganic type crystalline polypyrrolel polyantimonic acid composite system preparation characterization and analytical applications as a cation exchange material and hg ii ion selective membrane electrode
Analytica Chimica Acta, 2004Co-Authors: Asif Ali Khan, M. M. AlamAbstract:Abstract A new phase of ‘organic–inorganic’ composite system, polypyrrole polyantimonic acid, prepared by mixing the inorganic precipitate of hydrated antimony oxide with organic conducting polymer i.e., polypyrrole, providing a novel granular form hybrid catIon-Exchanger suitable for column operation with better chemical and thermal stability, good Ion-Exchange Capacity, reproducibility and selectivity for heavy metals. The physicochemical properties of this material were studied using elemental analyses, AAS, SEM, XRD, FTIR and simultaneous TGA-DTA studies. Ion-Exchange Capacity, pH-titrations, elution and distribution behavior were also carried out to characterize the material. Distribution studies revealed the catIon-Exchange material to be highly selective for Hg(II) and its selectivity was performed by achieving some important binary separations like Hg 2+ –Zn 2+ , Hg 2+ –Ni 2+ , Hg 2+ –Cu 2+ , Hg 2+ –Fe 3+ , Hg 2+ –Cd 2+ , Hg 2+ –Mg 2+ etc. on its column. Using this electroactive composite material, a new heterogeneous precipitate based selective ion-sensitive membrane electrode was fabricated for the determination of Hg(II) ions in solutions. The membrane electrode is mechanically stable, with a quick response time, and can be operated within a wide pH range. The selectivity coefficients for different cations determined by mixed solution method were found to be less than unity The electrode was also found to be satisfactory in electrometric titrations.
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synthesis characterization and analytical applications of a new and novel organic inorganic composite material as a cation exchanger and cd ii ion selective membrane electrode polyaniline sn iv tungstoarsenate
Reactive & Functional Polymers, 2003Co-Authors: Asif Ali Khan, M. M. AlamAbstract:Abstract Composite materials formed by the combination of inorganic ion exchangers of multivalent metal acid salts and organic conducting polymers (polyaniline, polypyrrole, polythiophene, etc.), providing a new class of ‘organic–inorganic’ hybrid ion exchangers with better mechanical and granulometric properties, good Ion-Exchange Capacity, higher stability, reproducibility and selectivity for heavy metals. Such a type of ion exchanger ‘polyaniline Sn(IV) tungstoarsenate’ was developed by mixing polyaniline into inorganic precipitate of Sn(IV) tungstoarsenate. This material was characterized using atomic absorption spectrometry, elemental analysis, Fourier transform infrared spectroscopy, simultaneous thermogravimetry–differential thermogravimetry, X-ray and scanning electron microscopy studies. Ion-Exchange Capacity, pH-titrations, elution and distribution behavior were also carried out to characterize the material. On the basis of distribution studies, the material was found to be highly selective for Cd(II) and its selectivity was tested by achieving some important binary separations like Cd(II)–Zn(II), Cd(II)–Pb(II), Cd(II)–Hg(II), Cd(II)–Cu(II), etc., on its column. Using this composite cation exchanger as electroactive material, a new heterogeneous precipitate based selective ion-sensitive membrane electrode was developed for the determination of Cd(II) ions in solutions. The membrane electrode is mechanically stable, with a quick response time, and can be operated within a wide pH range. The selectivity coefficients for different cations determined by mixed solution method were found to be less than unity. The electrode was also found to be satisfactory in electrometric titrations.
Gaurav Sharma - One of the best experts on this subject based on the ideXlab platform.
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sol gel synthesis of polyacrylamide stannic arsenate nanocomposite ion exchanger binary separations and enhanced photo catalytic activity
SN Applied Sciences, 2019Co-Authors: Ajay Kumar, Gaurav Sharma, Manita Thakur, Deepak PathaniaAbstract:In this, polyacrylamide-stannic arsenate nanocomposite (PA/SANC) ion exchanger has been synthesized using sol–gel technique. Different instrumental techniques were employed to characterize the PA/SANC. XRD results illustrate semi-crystalline nature of material. TEM images confirmed that the size of PA/SANC was in nano-range. Nanocomposite have superior physicochemical properties including ion exchange Capacity, elution behavior, effect of eluent concentration, distribution coefficient (Kd), effect of temperature and pH study. PA/SANC have 0.92 meq/g value of ion exchange Capacity as compared to inorganic part (0.39 meq/g). On the basis of Kd values, it has been found that nanocomposite was highly selective for Mg(II) ions (Kd = 222.90). PA/SANC was also explored for binary separation of different metal pairs. PA/SANC degraded 86.22% of sunset yellow under 3 h of solar exposure.
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preparation and characterization of gum acacia ce iv mopo 4 nanocomposite ion exchanger for photocatalytic degradation of methyl violet dye
Journal of Inorganic and Organometallic Polymers and Materials, 2019Co-Authors: Vikas Gupta, Amit Kumar, Gaurav Sharma, Florian J StadlerAbstract:Gum acacia based nanocomposite ion exchanger has been fabricated using simple sol–gel method. The effect of biopolymer concentration on ion exchange Capacity has been studied. The GA/CeMoPO4 nanocomposite ion exchanger has been well characterized using various techniques as FTIR, XRD, SEM and TEM. The GA/CeMoPO4 showed better ion exchange Capacity of 1.04 meq/g in comparison to its inorganic counterpart GA/CeMoPO4 (0.65 meq/g). The various physicochemical properties including thermal stability, elution behavior and pH titrations were studied in detail. The photocatalytic nature of GA/CeMoPO4 and CeMoPO4 were investigated using methyl violet as test dye. The GA/CeMoPO4 showed 86% of methyl violet photodegradation in 2 h of illumination.
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pectin zirconium iv silicophosphate nanocomposite ion exchanger photo catalysis heavy metal separation and antibacterial activity
Chemical Engineering Journal, 2015Co-Authors: Deepak Pathania, Gaurav Sharma, Rinku ThakurAbstract:Abstract Pectin @ zirconium (IV) silicophosphate nanocomposite (Pc/ZSPNC) ion exchanger has been prepared using simple sol–gel method. Pc/ZSPNC was characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR). Thermal stability, pH titration, elution concentration, elution behavior and distribution studies of Pc/ZSPNC were investigated. Pc/ZSPNC exhibited higher ion exchange Capacity of 1.01 mequiv/g compared to its inorganic counterpart (0.56 mequiv/g). Pc/ZSPNC was found thermally more stable and retained 59% ion exchange Capacity at 400 °C. Photo catalytic activity of Pc/ZSPNC was explored for the degradation of methylene blue (MB) dye in presence of solar irradiation. It was recorded that 97.02% of MB dye was degraded after 60 min of irradiation. The photo degradation of MB follows pseudo-first-order rate order kinetics with rate constant K of 0.0919 min−1 and R2 of 0.9977. Some binary separations of heavy metal ions were achieved on the column of Pc/ZSPNC ion exchanger based on distribution coefficient values. The antimicrobial activity of Pc/ZSPNC was also ascertained against Escherichia coli and Staphylococcus aureus bacteria using well diffusion method.
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synthesis characterization and analytical application of cellulose acetate tin iv molybdate nanocomposite ion exchanger binary separation of heavy metal ions and antimicrobial activity
Ionics, 2015Co-Authors: Deepak Pathania, Bhim Singh Rathore, Vinod Kumar Gupta, Shilpi Agarwal, Inderjeet Tyagi, Gaurav SharmaAbstract:A novel cellulose acetate-tin (VI) molybdate nanocomposite (CA/TMNC) exchanger was synthesized by sol-gel method and characterized using techniques such as Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and thermal analysis. Transmission electron microscopy (TEM) results indicated the formation of particles of nanodimensions. The ion exchange Capacity, pH titration, elution behavior, and distribution coefficient were also investigated. CA/TMNC showed enhanced ion exchange Capacity as compared to its inorganic counterpart. The distribution coefficient (K d ) values for different toxic heavy metal ion such as Pb+2, Cd+2, Mg+2, Zn+2, Co+2, Cu+2, Mn+2, Cr+3, Ni+2, and Fe+2 has been studied in double-distilled water by batch process. On the basis of K d values, four binary separation of the metal ions have been achieved on the column of CA/TMNC. The material is found to be selective for Pb2+ and Cd2+ ions; about more than 94 % of Pb2+ and 93 % of Cd2+ ions were recovered in each separation. The antibacterial activity of CA/TMNC was explored against Escherichia coli. The results confirmed the bacteriostatic nature of the CA/TMNC.
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synthesis and characterization of a new nanocomposite cation exchanger polyacrylamide ce iv silicophosphate photocatalytic and antimicrobial applications
Journal of Industrial and Engineering Chemistry, 2014Co-Authors: Deepak Pathania, Mu Naushad, Gaurav Sharma, Amit KumarAbstract:Abstract A nanocomposite cation exchanger polyacrylamide Ce(IV) silicophosphate (PAM–CSP)was prepared via sol–gel method. The ion exchange Capacity of nanocomposite PAM–CSP was found better (1.42 mequiv. g−1) than its inorganic counterpart Ce(IV) silicophosphate (CSP, 0.84 mequiv. g−1). The material was characterized using different techniques such as FTIR, XRD, SEM and TEM. The various physiochemical properties such as pH titration, elution concentration and elution behavior studies of PAM–CSP were studied. The pH titration studies clearly indicated the bifunctional nature of nanocomposite ion exchanger. The effect of temperature on the ion exchange Capacity of the material was also investigated. The photocatalytic activity of PAM–CSP was investigated for the degradation of methylene blue dye which revealed that 83.40% of MB was degraded in 5 h. The antimicrobial activities of PAM–CSP were also ascertained against Escherichia coli and Staphylococcus aureus.
