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Xiuying Tian - One of the best experts on this subject based on the ideXlab platform.
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Egg Albumin assisted sol gel synthesis of eu3 doped sno2 phosphor for temperature sensing
Materials Research Bulletin, 2020Co-Authors: Xiuying Tian, Jin Wen, Zhanjun Chen, Hongxia Peng, Xin Liu, Shixun Lian, Ting Zhou, Zhi Huang, Yangxi PengAbstract:Abstract SnO2: Eu3+ phosphors were prepared via Egg Albumin assisted sol-gel method. The typical sample SnO2: Eu3+ had tetragonal rutile structure. The sample SnO2: Eu3+ had irregular lamellar structure and serious agglomeration. The optical bandgap values of samples were in the range of ∼3.92–4.36 eV. When Eu3+ concentration was 2.0 %, concentration quenching of dipole-quadrupole (d-q) interaction type occurred. Based on the non-thermally coupled energy level fluorescence intensity ratio, the sample SnO2: 2%Eu3+ had the maximum absolute sensitivity of ∼0.87565 K−1 at 373 K. The relative sensitivity was estimated to be 2854.42/T2 K−1, and the maximum relative sensitivity was 3.214 % K−1 at 298 K, which had great potential application in the field of temperature sensing.
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one pot green hydrothermal synthesis and visible light photocatalytic properties of cu2o cu hybrid composites using Egg Albumin as structure modifier
Solid State Sciences, 2019Co-Authors: Xiuying Tian, Jin Wen, Zhanjun Chen, Hongxia Peng, Xin Liu, Yangxi PengAbstract:Abstract The Cu2O/Cu hybrid composites were successfully prepared via a simple one-pot green hydrothermal method using Egg Albumin as structure modifier. The phase structures, surface morphologies, chemical and optical properties of the samples were characterized by using XRD, FE-SEM, FT-IR and UV–Vis spectra. The effects of Egg Albumin amounts, holding time and molar ratio of raw materials on product structure were studied and bonding mechanism of Cu2O/Cu nanoparticles with Egg Albumin was discussed. BET specific surface areas and BJH pore size distributions were determined from N2 adsorption-desorption isotherms. The photocatalytic degradation of organic pollutants of the Cu2O/Cu hybrid composite was investigated and possible photocatalytic mechanism of Cu2O/Cu hybrid composites were proposed. The degradation rate of MB without any catalysts was only 3.33%, while the degradation rate of MB in the Cu2O/Cu+H2O2 system under visible light after 80 min was as high as 87.74% and the photo-degradation reaction rate was (244.6 ± 42.0) × 10−4 min−1. H2O2 and Cu2O/Cu composite had a synergistic action in photodegradation process of MB, which exhibited its potential as an excellent photocatalyst for degradation of MB under visible light irradiation.
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Egg Albumin assisted sol gel synthesis and photo catalytic activity of sno2 micro nano structured biscuits
Journal of Sol-Gel Science and Technology, 2018Co-Authors: Xiuying Tian, Jin Wen, Zhanjun Chen, Shumei Wang, Hongxia Peng, Shixun Lian, Yangxi PengAbstract:SnO2 micro/nano-structured biscuits had been successfully prepared via Egg Albumin-assisted sol–gel procedure. The typical sample calcined at 900 °C was pure SnO2 with a tetragonal rutile structure, constructed by the numerous pomegranate seed-like irregular nanoparticles in the range of ~100 to ~400 nm. The complexation of Egg Albumin and tin ions and the bonding characteristics of functional groups had been confirmed. The band gap energy values of samples were apparently higher than the reference value of bulk matter, which could be assigned to a well-known effect that small particles tended to exhibit increased band gaps. It was revealed that with the increase of the calcined temperature the photoluminescence efficiency increased. The sample at 500 °C had the higher photocatalytic activity and the higher mean photo-degradation rate of MO was 88.1 ± 1.2% as compared to other samples, which could be assigned to the lower value of band gap due to the defect levels in the band gap from the impurities formed during the growth and the lower photoluminescence efficiency, beneficial to electrons transfer and reducing the combination of electron and hole, which resulted in better photocatalytic activity.
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zns nanosheets Egg Albumin and microwave assisted synthesis and optical properties
Solid State Sciences, 2016Co-Authors: Xiuying Tian, Jin Wen, Zhanjun Chen, Shumei Wang, Hongxia PengAbstract:Abstract ZnS nanosheets were prepared via Egg Albumin and microwave-assisted method. The phases, crystalline lattice structures, morphologies, chemical and optical properties were characterized by X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), field-emission scanning electron microscope(FE-SEM), selected area electron diffraction (SAED), Fourier transform infrared (FTIR) spectroscopy, ultraviolet–visible (UV–Vis) spectroscopy and fluorescence(FL) spectrometer and growth mechanism of ZnS nanosheets was investigated. The results showed that all samples were pure cubic zinc blende with polycrystalline structure. The width of ZnS nanosheets with a rectangular nanostructure was in the range of 450–750 nm. The chemical interaction existed between Egg Albumin molecules and ZnS nanoparticles via the amide/carboxylate group. The band gap value calculated was 3.72 eV. The band at around 440 nm was attributed to the sulfur vacancies of the ZnS nanosheets. With increasing volumes of Egg Albumin, the photoluminescence (PL) intensity of ZnS samples firstly increased and then decreased, attributed to concentration quenching.
Yangxi Peng - One of the best experts on this subject based on the ideXlab platform.
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Egg Albumin assisted sol gel synthesis of eu3 doped sno2 phosphor for temperature sensing
Materials Research Bulletin, 2020Co-Authors: Xiuying Tian, Jin Wen, Zhanjun Chen, Hongxia Peng, Xin Liu, Shixun Lian, Ting Zhou, Zhi Huang, Yangxi PengAbstract:Abstract SnO2: Eu3+ phosphors were prepared via Egg Albumin assisted sol-gel method. The typical sample SnO2: Eu3+ had tetragonal rutile structure. The sample SnO2: Eu3+ had irregular lamellar structure and serious agglomeration. The optical bandgap values of samples were in the range of ∼3.92–4.36 eV. When Eu3+ concentration was 2.0 %, concentration quenching of dipole-quadrupole (d-q) interaction type occurred. Based on the non-thermally coupled energy level fluorescence intensity ratio, the sample SnO2: 2%Eu3+ had the maximum absolute sensitivity of ∼0.87565 K−1 at 373 K. The relative sensitivity was estimated to be 2854.42/T2 K−1, and the maximum relative sensitivity was 3.214 % K−1 at 298 K, which had great potential application in the field of temperature sensing.
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one pot green hydrothermal synthesis and visible light photocatalytic properties of cu2o cu hybrid composites using Egg Albumin as structure modifier
Solid State Sciences, 2019Co-Authors: Xiuying Tian, Jin Wen, Zhanjun Chen, Hongxia Peng, Xin Liu, Yangxi PengAbstract:Abstract The Cu2O/Cu hybrid composites were successfully prepared via a simple one-pot green hydrothermal method using Egg Albumin as structure modifier. The phase structures, surface morphologies, chemical and optical properties of the samples were characterized by using XRD, FE-SEM, FT-IR and UV–Vis spectra. The effects of Egg Albumin amounts, holding time and molar ratio of raw materials on product structure were studied and bonding mechanism of Cu2O/Cu nanoparticles with Egg Albumin was discussed. BET specific surface areas and BJH pore size distributions were determined from N2 adsorption-desorption isotherms. The photocatalytic degradation of organic pollutants of the Cu2O/Cu hybrid composite was investigated and possible photocatalytic mechanism of Cu2O/Cu hybrid composites were proposed. The degradation rate of MB without any catalysts was only 3.33%, while the degradation rate of MB in the Cu2O/Cu+H2O2 system under visible light after 80 min was as high as 87.74% and the photo-degradation reaction rate was (244.6 ± 42.0) × 10−4 min−1. H2O2 and Cu2O/Cu composite had a synergistic action in photodegradation process of MB, which exhibited its potential as an excellent photocatalyst for degradation of MB under visible light irradiation.
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Egg Albumin assisted sol gel synthesis and photo catalytic activity of sno2 micro nano structured biscuits
Journal of Sol-Gel Science and Technology, 2018Co-Authors: Xiuying Tian, Jin Wen, Zhanjun Chen, Shumei Wang, Hongxia Peng, Shixun Lian, Yangxi PengAbstract:SnO2 micro/nano-structured biscuits had been successfully prepared via Egg Albumin-assisted sol–gel procedure. The typical sample calcined at 900 °C was pure SnO2 with a tetragonal rutile structure, constructed by the numerous pomegranate seed-like irregular nanoparticles in the range of ~100 to ~400 nm. The complexation of Egg Albumin and tin ions and the bonding characteristics of functional groups had been confirmed. The band gap energy values of samples were apparently higher than the reference value of bulk matter, which could be assigned to a well-known effect that small particles tended to exhibit increased band gaps. It was revealed that with the increase of the calcined temperature the photoluminescence efficiency increased. The sample at 500 °C had the higher photocatalytic activity and the higher mean photo-degradation rate of MO was 88.1 ± 1.2% as compared to other samples, which could be assigned to the lower value of band gap due to the defect levels in the band gap from the impurities formed during the growth and the lower photoluminescence efficiency, beneficial to electrons transfer and reducing the combination of electron and hole, which resulted in better photocatalytic activity.
Bogdan Smyk - One of the best experts on this subject based on the ideXlab platform.
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fluorescence study of sinapic acid interaction with bovine serum Albumin and Egg Albumin
Journal of Fluorescence, 2003Co-Authors: Bogdan SmykAbstract:The mechanism of interaction of protein with compounds used for preparation of matrices for matrix-assisted laser desorption ionization–mass spectrometry (MALDI-MS) methods is unknown. This paper reports the investigation of this mechanism for sinapic acid and bovine serum Albumin and Egg Albumin. To examine these interactions in water a fluorescence method was applied. Sinapic acid can exist in three different forms, depending on pH: undissociated and with one or two deprotonated groups. pKas of these states are: 4.47 for the COOH group and 9.21 for the OH group [1]. Therefore the interactions were examined at pH: 2.0, 6.4, and 10.5. The results show that sinapic acid at pH 10.5, being a bivalent anion, does not form any complex with these two proteins. At pH 2.0, sinapic acid, being undissociated, interacts weakly with Egg Albumin. Sinapic acid does not interact with bovine serum Albumin at this pH. At pH 6.4, sinapic acid interacts only with bovine serum Albumin. Parameters of the sinapic acid and bovine serum Albumin complex were calculated based on the theory of multiple equlibria: the total number of binding sites, N = 15; the binding constant, K = 600 M−1; and the Hill's coefficient, j = 0.97. These parameters indicate (but not definitively because a large saturation was not obtained) that this is a simple binding of sinapic acid to bovine serum Albumin with the binding sites of the same type.
Ali Rashidinejad - One of the best experts on this subject based on the ideXlab platform.
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the physical and rheological properties of Egg Albumin emulsions are influenced by basil seed gum as the stabilizer
Journal of Food and Bioprocess Engineering, 2020Co-Authors: Saeed Mirarab Razi, Ali Motamedzadegan, Seyedahmad Shahidi, Ali RashidinejadAbstract:In this study, the effect of basil seed gum (BSG) on the stability and rheological properties of Egg white Albumin (EWA) emulsions was investigated. A constant amount of EWA (0.5% w/v) and different concentrations of BSG (0-0.3% w/v) were used for the manufacture and stabilization of oil-in-water emulsions (30% w/w). The results showed that by increasing BSG concentration, the storage (21 days) stability of the emulsions was significantly (p < 0.05) improved. The highest creaming index was obtained in the case of the control emulsion (containing no BSG). Negative zeta potential was observed for all emulsion samples, with the emulsion containing 0.3% BSG showing the most negative surface charge, indicating the improvement in the stability of the manufactured emulsions in the presence of BSG. All of the emulsions showed shear-thinning flow behavior. The apparent viscosity increased with the increase in BSG concentration. Hysteresis area increased due to the increase in BSG concentration. The results of the frequency sweep test showed that storage and loss moduli increased by increasing the frequency and both of these moduli increased due to the increase in BSG concentration. Fitting frequency sweep data with power-law model confirmed a gel-like behavior for the emulsions containing a higher concentration of BSG. Overall, the findings of this study demonstrated that basil seed gum at an optimum concentration (0.3%) could be used as a natural stabilizer in the food emulsions containing Egg Albumin.
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the effect of basil seed gum bsg on the rheological and physicochemical properties of heat induced Egg Albumin gels
Food Hydrocolloids, 2018Co-Authors: Saeed Mirarab Razi, Ali Motamedzadegan, Ahmad Shahidi, Ali RashidinejadAbstract:Abstract This investigation demonstrates the effect of basil seed gum (BSG) on the rheological and physicochemical characteristics of Egg Albumin gels. The mixtures of Egg Albumin (4%, w/v) and BSG (0, 0.05, 0.1, and 0.3%, w/v) were heated at 75 °C for 30 min to form heat-induced gels. A shear thinning behaviour for all of the gels was observed and the increase in BSG concentration, from 0.05% to 0.3%, increased the apparent viscosity of the gels at the constant shear rate of 50 s−1. Results of amplitude test showed that G′ was greater than G″ at low frequency, while they crossed over each other in the middle of the strain range. G′LVE, G″LVE, τf, γc, τy, and G′s(n-LVE) of the gel samples increased with the increase in BSG concentration. The frequency sweep data showed that G′ modulus was greater than G″ modulus in all of the frequency ranges with no crossover. All of the samples deviated from Cox-Merz law, confirming their gel-like behaviour. A linear increase of loss and storage modulus was observed during cooling the samples from 85 to 5 °C. FTIR spectra demonstrated some major shifts, such as in the region of 800–1200 cm−1, related to C-O and C-O-C band stretching. The hardness of the gels increased as a result of the increase in BSG concentration with no significant (p > .05) change in cohesiveness. Overall, it was found that by addition of BSG, harder heat-induced Egg Albumin gels could be obtained for different food applications or delivery of active compounds in functional food.
Jin Wen - One of the best experts on this subject based on the ideXlab platform.
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Egg Albumin assisted sol gel synthesis of eu3 doped sno2 phosphor for temperature sensing
Materials Research Bulletin, 2020Co-Authors: Xiuying Tian, Jin Wen, Zhanjun Chen, Hongxia Peng, Xin Liu, Shixun Lian, Ting Zhou, Zhi Huang, Yangxi PengAbstract:Abstract SnO2: Eu3+ phosphors were prepared via Egg Albumin assisted sol-gel method. The typical sample SnO2: Eu3+ had tetragonal rutile structure. The sample SnO2: Eu3+ had irregular lamellar structure and serious agglomeration. The optical bandgap values of samples were in the range of ∼3.92–4.36 eV. When Eu3+ concentration was 2.0 %, concentration quenching of dipole-quadrupole (d-q) interaction type occurred. Based on the non-thermally coupled energy level fluorescence intensity ratio, the sample SnO2: 2%Eu3+ had the maximum absolute sensitivity of ∼0.87565 K−1 at 373 K. The relative sensitivity was estimated to be 2854.42/T2 K−1, and the maximum relative sensitivity was 3.214 % K−1 at 298 K, which had great potential application in the field of temperature sensing.
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one pot green hydrothermal synthesis and visible light photocatalytic properties of cu2o cu hybrid composites using Egg Albumin as structure modifier
Solid State Sciences, 2019Co-Authors: Xiuying Tian, Jin Wen, Zhanjun Chen, Hongxia Peng, Xin Liu, Yangxi PengAbstract:Abstract The Cu2O/Cu hybrid composites were successfully prepared via a simple one-pot green hydrothermal method using Egg Albumin as structure modifier. The phase structures, surface morphologies, chemical and optical properties of the samples were characterized by using XRD, FE-SEM, FT-IR and UV–Vis spectra. The effects of Egg Albumin amounts, holding time and molar ratio of raw materials on product structure were studied and bonding mechanism of Cu2O/Cu nanoparticles with Egg Albumin was discussed. BET specific surface areas and BJH pore size distributions were determined from N2 adsorption-desorption isotherms. The photocatalytic degradation of organic pollutants of the Cu2O/Cu hybrid composite was investigated and possible photocatalytic mechanism of Cu2O/Cu hybrid composites were proposed. The degradation rate of MB without any catalysts was only 3.33%, while the degradation rate of MB in the Cu2O/Cu+H2O2 system under visible light after 80 min was as high as 87.74% and the photo-degradation reaction rate was (244.6 ± 42.0) × 10−4 min−1. H2O2 and Cu2O/Cu composite had a synergistic action in photodegradation process of MB, which exhibited its potential as an excellent photocatalyst for degradation of MB under visible light irradiation.
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Egg Albumin assisted sol gel synthesis and photo catalytic activity of sno2 micro nano structured biscuits
Journal of Sol-Gel Science and Technology, 2018Co-Authors: Xiuying Tian, Jin Wen, Zhanjun Chen, Shumei Wang, Hongxia Peng, Shixun Lian, Yangxi PengAbstract:SnO2 micro/nano-structured biscuits had been successfully prepared via Egg Albumin-assisted sol–gel procedure. The typical sample calcined at 900 °C was pure SnO2 with a tetragonal rutile structure, constructed by the numerous pomegranate seed-like irregular nanoparticles in the range of ~100 to ~400 nm. The complexation of Egg Albumin and tin ions and the bonding characteristics of functional groups had been confirmed. The band gap energy values of samples were apparently higher than the reference value of bulk matter, which could be assigned to a well-known effect that small particles tended to exhibit increased band gaps. It was revealed that with the increase of the calcined temperature the photoluminescence efficiency increased. The sample at 500 °C had the higher photocatalytic activity and the higher mean photo-degradation rate of MO was 88.1 ± 1.2% as compared to other samples, which could be assigned to the lower value of band gap due to the defect levels in the band gap from the impurities formed during the growth and the lower photoluminescence efficiency, beneficial to electrons transfer and reducing the combination of electron and hole, which resulted in better photocatalytic activity.
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zns nanosheets Egg Albumin and microwave assisted synthesis and optical properties
Solid State Sciences, 2016Co-Authors: Xiuying Tian, Jin Wen, Zhanjun Chen, Shumei Wang, Hongxia PengAbstract:Abstract ZnS nanosheets were prepared via Egg Albumin and microwave-assisted method. The phases, crystalline lattice structures, morphologies, chemical and optical properties were characterized by X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), field-emission scanning electron microscope(FE-SEM), selected area electron diffraction (SAED), Fourier transform infrared (FTIR) spectroscopy, ultraviolet–visible (UV–Vis) spectroscopy and fluorescence(FL) spectrometer and growth mechanism of ZnS nanosheets was investigated. The results showed that all samples were pure cubic zinc blende with polycrystalline structure. The width of ZnS nanosheets with a rectangular nanostructure was in the range of 450–750 nm. The chemical interaction existed between Egg Albumin molecules and ZnS nanoparticles via the amide/carboxylate group. The band gap value calculated was 3.72 eV. The band at around 440 nm was attributed to the sulfur vacancies of the ZnS nanosheets. With increasing volumes of Egg Albumin, the photoluminescence (PL) intensity of ZnS samples firstly increased and then decreased, attributed to concentration quenching.