The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform
Wojciech Piasecki - One of the best experts on this subject based on the ideXlab platform.
-
influence of Electrolyte Ion adsorptIon on the derivative of potentiometric titratIon curve of oxide suspensIon theoretical analysis
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2004Co-Authors: Robert Charmas, Piotr Zarzycki, Benedicte Prelot, Fabien Thomas, Frédéric Villiéras, Wojciech PiaseckiAbstract:The theory based on the 1-pK triple layer model of the oxide/Electrolyte interface is used to obtain the derivative of a proton adsorptIon isotherm. The present approach is much more rigorous and complex from a physical point of view compared to our previous paper [J. Phys. Chem. B. 106 (2002) 13280]. In the present work we take into account adsorptIon of inert Electrolyte Ions. Also, the present approach takes into consideratIon the local surface heterogeneity. The aim of this work is not to propose new surface model, but to develop a theoretical basis for obtaining of proton affinity distributIon from the derivatives of a potentiometric titratIon curve. We demonstrate how including of Electrolyte Ion adsorptIon influences on the shape and behavior of the local derivatives of potentiometric titratIon curves. The influence of the other parameters is also thoroughly investigated. It was found that complete descriptIon of the derivative of surface charging curve requires a high number of parameters. Therefore, it is difficult to adopt the obtained peaks for unambiguous decompositIon of experimental derivative of a titratIon curve onto the parts coming from different patches of the surface.
-
Influence of Electrolyte Ion adsorptIon on the derivative of potentiometric titratIon curve of oxide suspensIon – theoretical analysis
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2004Co-Authors: Robert Charmas, Piotr Zarzycki, Benedicte Prelot, Fabien Thomas, Frédéric Villiéras, Wojciech PiaseckiAbstract:The theory based on the 1-pK triple layer model of the oxide/Electrolyte interface is used to obtain the derivative of a proton adsorptIon isotherm. The present approach is much more rigorous and complex from a physical point of view compared to our previous paper [J. Phys. Chem. B. 106 (2002) 13280]. In the present work we take into account adsorptIon of inert Electrolyte Ions. Also, the present approach takes into consideratIon the local surface heterogeneity. The aim of this work is not to propose new surface model, but to develop a theoretical basis for obtaining of proton affinity distributIon from the derivatives of a potentiometric titratIon curve. We demonstrate how including of Electrolyte Ion adsorptIon influences on the shape and behavior of the local derivatives of potentiometric titratIon curves. The influence of the other parameters is also thoroughly investigated. It was found that complete descriptIon of the derivative of surface charging curve requires a high number of parameters. Therefore, it is difficult to adopt the obtained peaks for unambiguous decompositIon of experimental derivative of a titratIon curve onto the parts coming from different patches of the surface
-
The influence of surface potential on quantities measuring for metal oxide/Electrolyte solutIon interface: theoretical study based on 1-pK and 2-pK surface charging models
Physical Chemistry Chemical Physics, 2003Co-Authors: Wojciech PiaseckiAbstract:Two models of oxide surface charging, 1-pK and 2-pK, and the basic Stern model of electric double layer were applied in order to calculate surface potential. The potential was calculated by means of exact equatIons developed for these models, simplified equatIons, which neglected Electrolyte Ion adsorptIon, and the Nernst equatIon. The potentials obtained in this way were used to calculate: surface charge, electrokinetic potential, isotherms of Electrolyte Ion adsorptIon, temperature dependence of surface potential, and the molar heat of proton adsorptIon. The calculated values were compared with experimental data for the system γ-Al2O3/NaCl. It was found that, except for surface charge, the calculated quantities were very sensitive to the surface potential. The best results were obtained when this potential was calculated by means of exact equatIons taking into account Electrolyte Ion adsorptIon. The analysis presented shows clearly that evaluatIon of the theoretical models on the basis of only one kind of experimental data is questIonable. However, it is common practice.
Bahram Ramezanzadeh - One of the best experts on this subject based on the ideXlab platform.
-
synthesis of a non hazardous smart anti corrosIon nano carrier based on beta cyclodextrin zinc acetylacetonate inclusIon complex decorated graphene oxide β cd zna mgo
Journal of Hazardous Materials, 2020Co-Authors: Ali Dehghani, Ghasem Bahlakeh, Bahram RamezanzadehAbstract:Recently, the high research consideratIons have been devoted to designing smart coatings with self-healing propensity along with improved anti-corrosIon properties, durability, and effectiveness. In the present work, a novel nano-container, namely beta-cyclodextrin (β-CD), was introduced and applied for encapsulating and subsequent controlled release of a metal-organic inhibitor, namely zinc acetylacetonate (ZnA) in the polymeric matrix. The smart release is another principal object which has been lacked in recent reports. For this aim, graphene oxide nanoparticles were employed to carry the inclusIon complexes (β-CD-ZnA) to the defected zones of coatings. FT-IR, Raman, XRD, and UV-vis experiments ascertained that the β-CD-ZnA inclusIon complex successfully adsorbed onto the GO sheets modified by 3-aminopropyl tri-ethoxysilane (MGO). The electrochemical inspectIons (i.e., potentiodynamic polarizatIon and EIS) proved that the β-CD-ZnA-MGO particles could remarkably inhibit the steel corrosIon in 3.5 % NaCl solutIon via mixed cathodic/anodic retardatIon mechanisms with approximately 93 % efficiency after 48 h metal exposure. It was also found that the corrosIon protectIon performance of the polymeric matrix loaded by β-CD-ZnA-MGO nano-particles enhanced markedly, assigning to the significant epoxy defect coverage by β-CD-ZnA. The intelligent transmissIon was affirmed by EDS-mapping analysis in the defected regIons of epoxy coating. The high quantity of the Zn element ensured the successful adsorptIon of the ZnA on the metal surface. The damage, as well as the delaminated degrees of the un-scratched epoxy coating, was estimated by the EIS experiment outcomes. Achievements reflected that the presence of β-CD-ZnA-MGO nano-filler in the epoxy resin matrix significantly reduced the Electrolyte/Ion diffusIon. Furthermore, the computatIonal results elucidated from DFT-D approach clarified the stronger β-CD-ZnA affinity towards the GO adsorbent compared with the pure β-CD, supporting the experimental findings.
-
Synthesis of a non-hazardous/smart anti-corrosIon nano-carrier based on beta-cyclodextrin-zinc acetylacetonate inclusIon complex decorated graphene oxide (β-CD-ZnA-MGO).
Journal of Hazardous Materials, 2020Co-Authors: Ali Dehghani, Ghasem Bahlakeh, Bahram RamezanzadehAbstract:Recently, the high research consideratIons have been devoted to designing smart coatings with self-healing propensity along with improved anti-corrosIon properties, durability, and effectiveness. In the present work, a novel nano-container, namely beta-cyclodextrin (β-CD), was introduced and applied for encapsulating and subsequent controlled release of a metal-organic inhibitor, namely zinc acetylacetonate (ZnA) in the polymeric matrix. The smart release is another principal object which has been lacked in recent reports. For this aim, graphene oxide nanoparticles were employed to carry the inclusIon complexes (β-CD-ZnA) to the defected zones of coatings. FT-IR, Raman, XRD, and UV-vis experiments ascertained that the β-CD-ZnA inclusIon complex successfully adsorbed onto the GO sheets modified by 3-aminopropyl tri-ethoxysilane (MGO). The electrochemical inspectIons (i.e., potentiodynamic polarizatIon and EIS) proved that the β-CD-ZnA-MGO particles could remarkably inhibit the steel corrosIon in 3.5 % NaCl solutIon via mixed cathodic/anodic retardatIon mechanisms with approximately 93 % efficiency after 48 h metal exposure. It was also found that the corrosIon protectIon performance of the polymeric matrix loaded by β-CD-ZnA-MGO nano-particles enhanced markedly, assigning to the significant epoxy defect coverage by β-CD-ZnA. The intelligent transmissIon was affirmed by EDS-mapping analysis in the defected regIons of epoxy coating. The high quantity of the Zn element ensured the successful adsorptIon of the ZnA on the metal surface. The damage, as well as the delaminated degrees of the un-scratched epoxy coating, was estimated by the EIS experiment outcomes. Achievements reflected that the presence of β-CD-ZnA-MGO nano-filler in the epoxy resin matrix significantly reduced the Electrolyte/Ion diffusIon. Furthermore, the computatIonal results elucidated from DFT-D approach clarified the stronger β-CD-ZnA affinity towards the GO adsorbent compared with the pure β-CD, supporting the experimental findings.
Ali Dehghani - One of the best experts on this subject based on the ideXlab platform.
-
synthesis of a non hazardous smart anti corrosIon nano carrier based on beta cyclodextrin zinc acetylacetonate inclusIon complex decorated graphene oxide β cd zna mgo
Journal of Hazardous Materials, 2020Co-Authors: Ali Dehghani, Ghasem Bahlakeh, Bahram RamezanzadehAbstract:Recently, the high research consideratIons have been devoted to designing smart coatings with self-healing propensity along with improved anti-corrosIon properties, durability, and effectiveness. In the present work, a novel nano-container, namely beta-cyclodextrin (β-CD), was introduced and applied for encapsulating and subsequent controlled release of a metal-organic inhibitor, namely zinc acetylacetonate (ZnA) in the polymeric matrix. The smart release is another principal object which has been lacked in recent reports. For this aim, graphene oxide nanoparticles were employed to carry the inclusIon complexes (β-CD-ZnA) to the defected zones of coatings. FT-IR, Raman, XRD, and UV-vis experiments ascertained that the β-CD-ZnA inclusIon complex successfully adsorbed onto the GO sheets modified by 3-aminopropyl tri-ethoxysilane (MGO). The electrochemical inspectIons (i.e., potentiodynamic polarizatIon and EIS) proved that the β-CD-ZnA-MGO particles could remarkably inhibit the steel corrosIon in 3.5 % NaCl solutIon via mixed cathodic/anodic retardatIon mechanisms with approximately 93 % efficiency after 48 h metal exposure. It was also found that the corrosIon protectIon performance of the polymeric matrix loaded by β-CD-ZnA-MGO nano-particles enhanced markedly, assigning to the significant epoxy defect coverage by β-CD-ZnA. The intelligent transmissIon was affirmed by EDS-mapping analysis in the defected regIons of epoxy coating. The high quantity of the Zn element ensured the successful adsorptIon of the ZnA on the metal surface. The damage, as well as the delaminated degrees of the un-scratched epoxy coating, was estimated by the EIS experiment outcomes. Achievements reflected that the presence of β-CD-ZnA-MGO nano-filler in the epoxy resin matrix significantly reduced the Electrolyte/Ion diffusIon. Furthermore, the computatIonal results elucidated from DFT-D approach clarified the stronger β-CD-ZnA affinity towards the GO adsorbent compared with the pure β-CD, supporting the experimental findings.
-
Synthesis of a non-hazardous/smart anti-corrosIon nano-carrier based on beta-cyclodextrin-zinc acetylacetonate inclusIon complex decorated graphene oxide (β-CD-ZnA-MGO).
Journal of Hazardous Materials, 2020Co-Authors: Ali Dehghani, Ghasem Bahlakeh, Bahram RamezanzadehAbstract:Recently, the high research consideratIons have been devoted to designing smart coatings with self-healing propensity along with improved anti-corrosIon properties, durability, and effectiveness. In the present work, a novel nano-container, namely beta-cyclodextrin (β-CD), was introduced and applied for encapsulating and subsequent controlled release of a metal-organic inhibitor, namely zinc acetylacetonate (ZnA) in the polymeric matrix. The smart release is another principal object which has been lacked in recent reports. For this aim, graphene oxide nanoparticles were employed to carry the inclusIon complexes (β-CD-ZnA) to the defected zones of coatings. FT-IR, Raman, XRD, and UV-vis experiments ascertained that the β-CD-ZnA inclusIon complex successfully adsorbed onto the GO sheets modified by 3-aminopropyl tri-ethoxysilane (MGO). The electrochemical inspectIons (i.e., potentiodynamic polarizatIon and EIS) proved that the β-CD-ZnA-MGO particles could remarkably inhibit the steel corrosIon in 3.5 % NaCl solutIon via mixed cathodic/anodic retardatIon mechanisms with approximately 93 % efficiency after 48 h metal exposure. It was also found that the corrosIon protectIon performance of the polymeric matrix loaded by β-CD-ZnA-MGO nano-particles enhanced markedly, assigning to the significant epoxy defect coverage by β-CD-ZnA. The intelligent transmissIon was affirmed by EDS-mapping analysis in the defected regIons of epoxy coating. The high quantity of the Zn element ensured the successful adsorptIon of the ZnA on the metal surface. The damage, as well as the delaminated degrees of the un-scratched epoxy coating, was estimated by the EIS experiment outcomes. Achievements reflected that the presence of β-CD-ZnA-MGO nano-filler in the epoxy resin matrix significantly reduced the Electrolyte/Ion diffusIon. Furthermore, the computatIonal results elucidated from DFT-D approach clarified the stronger β-CD-ZnA affinity towards the GO adsorbent compared with the pure β-CD, supporting the experimental findings.
Robert Charmas - One of the best experts on this subject based on the ideXlab platform.
-
influence of Electrolyte Ion adsorptIon on the derivative of potentiometric titratIon curve of oxide suspensIon theoretical analysis
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2004Co-Authors: Robert Charmas, Piotr Zarzycki, Benedicte Prelot, Fabien Thomas, Frédéric Villiéras, Wojciech PiaseckiAbstract:The theory based on the 1-pK triple layer model of the oxide/Electrolyte interface is used to obtain the derivative of a proton adsorptIon isotherm. The present approach is much more rigorous and complex from a physical point of view compared to our previous paper [J. Phys. Chem. B. 106 (2002) 13280]. In the present work we take into account adsorptIon of inert Electrolyte Ions. Also, the present approach takes into consideratIon the local surface heterogeneity. The aim of this work is not to propose new surface model, but to develop a theoretical basis for obtaining of proton affinity distributIon from the derivatives of a potentiometric titratIon curve. We demonstrate how including of Electrolyte Ion adsorptIon influences on the shape and behavior of the local derivatives of potentiometric titratIon curves. The influence of the other parameters is also thoroughly investigated. It was found that complete descriptIon of the derivative of surface charging curve requires a high number of parameters. Therefore, it is difficult to adopt the obtained peaks for unambiguous decompositIon of experimental derivative of a titratIon curve onto the parts coming from different patches of the surface.
-
Influence of Electrolyte Ion adsorptIon on the derivative of potentiometric titratIon curve of oxide suspensIon – theoretical analysis
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2004Co-Authors: Robert Charmas, Piotr Zarzycki, Benedicte Prelot, Fabien Thomas, Frédéric Villiéras, Wojciech PiaseckiAbstract:The theory based on the 1-pK triple layer model of the oxide/Electrolyte interface is used to obtain the derivative of a proton adsorptIon isotherm. The present approach is much more rigorous and complex from a physical point of view compared to our previous paper [J. Phys. Chem. B. 106 (2002) 13280]. In the present work we take into account adsorptIon of inert Electrolyte Ions. Also, the present approach takes into consideratIon the local surface heterogeneity. The aim of this work is not to propose new surface model, but to develop a theoretical basis for obtaining of proton affinity distributIon from the derivatives of a potentiometric titratIon curve. We demonstrate how including of Electrolyte Ion adsorptIon influences on the shape and behavior of the local derivatives of potentiometric titratIon curves. The influence of the other parameters is also thoroughly investigated. It was found that complete descriptIon of the derivative of surface charging curve requires a high number of parameters. Therefore, it is difficult to adopt the obtained peaks for unambiguous decompositIon of experimental derivative of a titratIon curve onto the parts coming from different patches of the surface
Shaowei Bian - One of the best experts on this subject based on the ideXlab platform.
-
cotton yarns modified with three dimensIonal metallic ni conductive network and pseudocapacitive co ni layered double hydroxide nanosheet array as electrode materials for flexible yarn supercapacitors
Electrochimica Acta, 2018Co-Authors: Haitao Wang, Xiaohui Kang, Shaowei BianAbstract:Abstract A novel cotton/Ni/Co-Ni layered double hydroxide (CT/Ni/Co-Ni LDH) hybrid yarn electrode material is prepared by constructing a three-dimensIonal (3D) metallic Ni conductive network on the cotton fiber surface for rapid electron transportatIon and subsequently in situ growing Co-Ni LDH nanosheet array layers with high electroactive surface area for faradic reactIons. The 3D porous electrode structure facilitates the effective Electrolyte Ion diffusIon. The obtained yarn electrode material shows a high areal capacitance of 1.26 F/cm2 (121571.1 C/cm2) at a scan rate of 5 mV/s, as well as a stable electrochemical performance under various mechanical deformatIons. An all-solid-state yarn supercapacitor device is further assembled based on the obtained yarn electrode materials, which exhibits a high energy density of 9.3 μWh/cm2 at a power density of 43.99 μW/cm2.
-
High-performance textile supercapacitor electrode materials enhanced with three-dimensIonal carbon nanotubes/graphene conductive network and in situ polymerized polyaniline
Electrochimica Acta, 2017Co-Authors: Fu Shao, Jianan Zhang, Shaowei BianAbstract:Abstract Three-dimensIon (3D) conductive network was successfully constructed by carbon nanotubes (CNTs) and graphene sheets (G) on the polyester fabric (PETC) using a “dipping-drying” process and electrophoretic depositIon method, which facilitates to greatly enhance the electron transportatIon rate and shorten the Electrolyte Ion diffusIon distance. The resultant composite fabric provides a promising substrate to prepare textile-based electrodes for flexile supercapacitors. After further coating the CNTs with polyaniline (PANI), the polyaniline/carbon nanotubes/graphene/polyester (PANI/CNTs/G/PETC) textile electrode exhibited high electrochemical performances. The composite electrode showed a maximum areal capacitance of 791 mF cm −2 at a current density of 1.5 mA cm −2 . Compared to some reported PANI electrodes with fast decay in capacitance capacity, the capacitance retentIons of the composite electrode was over 76% even after 3000 charge-discharge cycles. Moreover, the composite electrode also exhibited stable electrochemical performances under the mechanical bending and stretching conditIons.