The Experts below are selected from a list of 216 Experts worldwide ranked by ideXlab platform
Ying Li - One of the best experts on this subject based on the ideXlab platform.
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sonocatalytic degradation of methyl Parathion in the presence of micron sized and nano sized rutile titanium dioxide catalysts and comparison of their sonocatalytic abilities
Journal of Molecular Catalysis A-chemical, 2007Co-Authors: Jun Wang, Zhaohong Zhang, Xiangdong Zhang, Peng Zhang, Ronghe Li, Ying LiAbstract:Abstract Micron-sized and nano-sized rutile titanium dioxide (TiO2) powders were used as the catalysts for the sonocatalytic degradation of methyl Parathion, an organophosphorus insecticide. The ultrasound of low power was used as an irradiation source to induce the catalytic activity of the rutile TiO2 particles. It was found that the degradation of methyl Parathion sonocatalytically progressed more rapidly in the presence of TiO2 particles than only with ultrasonic irradiation in the absence of TiO2 catalyst. Moreover, the sonocatalytic activity of the micron-sized rutile TiO2 particles was obviously higher than that of nano-sized rutile TiO2 particles. The influences of reaction parameters, such as the species of TiO2 particles, methyl Parathion concentration, TiO2 amount, pH value, ultrasonic intensity, ultrasonic frequency and temperature have been investigated and the optimal conditions for eliminating methyl Parathion have been established. The processes of methyl Parathion degradation have been monitored by high performance liquid chromatography (HPLC), ion chromatography and UV–vis spectra. The results showed that methyl Parathion in aqueous solution was completely degraded to give simple inorganic ions, such as NO2−, NO3−, PO43−, SO42−, etc. The kinetics of the degradation of methyl Parathion followed the first-order reaction. The degradation percentage of methyl Parathion surpassed 95% within 80 min in the optimal experimental conditions.
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investigation on the sonocatalytic degradation of Parathion in the presence of nanometer rutile titanium dioxide tio2 catalyst
Journal of Hazardous Materials, 2006Co-Authors: Jun Wang, Zhaohong Zhang, Xiangdong Zhang, Yuefeng Jiang, Dianbo Dong, Peng Zhang, Ying LiAbstract:Abstract The nanometer rutile titanium dioxide (TiO2) powder was adopted to act as the sonocatalyst after treatment of high-temperature activation and the ultrasound of low power was used as an irradiation source to induce heat-treated TiO2 powder performing sonocatalytic degradation of Parathion. Although there are many factors influencing sonocatalytic degradation of Parathion, the experimental results demonstrate that the optimal degradation condition of Parathion can be obtained when the experimental conditions such as initial concentration of 50 mg/L Parathion, addition amount of 1000 mg/L nanometer rutile TiO2, ultrasonic of 30–50 kHz frequency and 50 W output power, acidity of pH 10.0 and temperature of 20 °C are adopted. The degradation ratio of Parathion surpassed 90% within 120 min ultrasonic irradiation in these optimal experiment conditions. The total degradation process of Parathion has been monitored by UV–vis spectra and ion chromatography. At last, the Parathions in aqueous solution are completely degraded and become some simple inorganic ions such as NO3−, PO43−, SO42−, etc. In addition, the sonocatalytic activities of reused TiO2 catalysts were also studied and found to decline gradually along with the reused times. In this paper, the research on sonocatalytic degradation kinetics was also been performed and found to follow pseudo first-order reaction. All experiments indicated that the sonocatalytic method in the presence of nanometer rutile TiO2 powder was an advisable choice for the treatments of non- or low-transparent organic wastewaters in future.
Jun Wang - One of the best experts on this subject based on the ideXlab platform.
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sonocatalytic degradation of methyl Parathion in the presence of micron sized and nano sized rutile titanium dioxide catalysts and comparison of their sonocatalytic abilities
Journal of Molecular Catalysis A-chemical, 2007Co-Authors: Jun Wang, Zhaohong Zhang, Xiangdong Zhang, Peng Zhang, Ronghe Li, Ying LiAbstract:Abstract Micron-sized and nano-sized rutile titanium dioxide (TiO2) powders were used as the catalysts for the sonocatalytic degradation of methyl Parathion, an organophosphorus insecticide. The ultrasound of low power was used as an irradiation source to induce the catalytic activity of the rutile TiO2 particles. It was found that the degradation of methyl Parathion sonocatalytically progressed more rapidly in the presence of TiO2 particles than only with ultrasonic irradiation in the absence of TiO2 catalyst. Moreover, the sonocatalytic activity of the micron-sized rutile TiO2 particles was obviously higher than that of nano-sized rutile TiO2 particles. The influences of reaction parameters, such as the species of TiO2 particles, methyl Parathion concentration, TiO2 amount, pH value, ultrasonic intensity, ultrasonic frequency and temperature have been investigated and the optimal conditions for eliminating methyl Parathion have been established. The processes of methyl Parathion degradation have been monitored by high performance liquid chromatography (HPLC), ion chromatography and UV–vis spectra. The results showed that methyl Parathion in aqueous solution was completely degraded to give simple inorganic ions, such as NO2−, NO3−, PO43−, SO42−, etc. The kinetics of the degradation of methyl Parathion followed the first-order reaction. The degradation percentage of methyl Parathion surpassed 95% within 80 min in the optimal experimental conditions.
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investigation on the sonocatalytic degradation of Parathion in the presence of nanometer rutile titanium dioxide tio2 catalyst
Journal of Hazardous Materials, 2006Co-Authors: Jun Wang, Zhaohong Zhang, Xiangdong Zhang, Yuefeng Jiang, Dianbo Dong, Peng Zhang, Ying LiAbstract:Abstract The nanometer rutile titanium dioxide (TiO2) powder was adopted to act as the sonocatalyst after treatment of high-temperature activation and the ultrasound of low power was used as an irradiation source to induce heat-treated TiO2 powder performing sonocatalytic degradation of Parathion. Although there are many factors influencing sonocatalytic degradation of Parathion, the experimental results demonstrate that the optimal degradation condition of Parathion can be obtained when the experimental conditions such as initial concentration of 50 mg/L Parathion, addition amount of 1000 mg/L nanometer rutile TiO2, ultrasonic of 30–50 kHz frequency and 50 W output power, acidity of pH 10.0 and temperature of 20 °C are adopted. The degradation ratio of Parathion surpassed 90% within 120 min ultrasonic irradiation in these optimal experiment conditions. The total degradation process of Parathion has been monitored by UV–vis spectra and ion chromatography. At last, the Parathions in aqueous solution are completely degraded and become some simple inorganic ions such as NO3−, PO43−, SO42−, etc. In addition, the sonocatalytic activities of reused TiO2 catalysts were also studied and found to decline gradually along with the reused times. In this paper, the research on sonocatalytic degradation kinetics was also been performed and found to follow pseudo first-order reaction. All experiments indicated that the sonocatalytic method in the presence of nanometer rutile TiO2 powder was an advisable choice for the treatments of non- or low-transparent organic wastewaters in future.
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sonocatalytic degradation of methyl Parathion in the presence of nanometer and ordinary anatase titanium dioxide catalysts and comparison of their sonocatalytic abilities
Ultrasonics Sonochemistry, 2006Co-Authors: Jun Wang, Zhaohong Zhang, Xiangdong Zhang, Yuefeng Jiang, Lei Wang, Liang Xu, Pingli KangAbstract:Abstract The degradation of methyl Parathion (O,O-dimethyl-O-(4-nitrophenyl)-phosphorothioate) using anatase titanium dioxide (TiO2) powder as heterogeneous sonocatalysts is reported. The influences of reaction parameters such as the species of TiO2 sonocatalysts, methyl Parathion concentrations, TiO2 adding amount, pH, ultrasonic intensity, ultrasonic frequency and temperature have been investigated and the optimal conditions for eliminating methyl Parathion have been identified. The efficiencies of sonocatalytic degradation in both nanometer and ordinary anatase systems are compared and the results indicate that the sonocatalytic activity of nanometer anatase TiO2 powder is better than that of ordinary anatase TiO2 powder. The primary degradation and the total mineralization of methyl Parathion have been monitored by high performance liquid chromatography (HPLC) and UV–vis spectra, respectively. Methyl Parathion got destroyed to some extent in both nanometer and ordinary anatase systems under ultrasonic irradiation. The kinetics for the degradation process of methyl Parathion follows the first-order reaction. The degradation ratio of methyl Parathion surpassed 90% within 50 min in the optimal experiment conditions.
Zhaohong Zhang - One of the best experts on this subject based on the ideXlab platform.
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sonocatalytic degradation of methyl Parathion in the presence of micron sized and nano sized rutile titanium dioxide catalysts and comparison of their sonocatalytic abilities
Journal of Molecular Catalysis A-chemical, 2007Co-Authors: Jun Wang, Zhaohong Zhang, Xiangdong Zhang, Peng Zhang, Ronghe Li, Ying LiAbstract:Abstract Micron-sized and nano-sized rutile titanium dioxide (TiO2) powders were used as the catalysts for the sonocatalytic degradation of methyl Parathion, an organophosphorus insecticide. The ultrasound of low power was used as an irradiation source to induce the catalytic activity of the rutile TiO2 particles. It was found that the degradation of methyl Parathion sonocatalytically progressed more rapidly in the presence of TiO2 particles than only with ultrasonic irradiation in the absence of TiO2 catalyst. Moreover, the sonocatalytic activity of the micron-sized rutile TiO2 particles was obviously higher than that of nano-sized rutile TiO2 particles. The influences of reaction parameters, such as the species of TiO2 particles, methyl Parathion concentration, TiO2 amount, pH value, ultrasonic intensity, ultrasonic frequency and temperature have been investigated and the optimal conditions for eliminating methyl Parathion have been established. The processes of methyl Parathion degradation have been monitored by high performance liquid chromatography (HPLC), ion chromatography and UV–vis spectra. The results showed that methyl Parathion in aqueous solution was completely degraded to give simple inorganic ions, such as NO2−, NO3−, PO43−, SO42−, etc. The kinetics of the degradation of methyl Parathion followed the first-order reaction. The degradation percentage of methyl Parathion surpassed 95% within 80 min in the optimal experimental conditions.
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investigation on the sonocatalytic degradation of Parathion in the presence of nanometer rutile titanium dioxide tio2 catalyst
Journal of Hazardous Materials, 2006Co-Authors: Jun Wang, Zhaohong Zhang, Xiangdong Zhang, Yuefeng Jiang, Dianbo Dong, Peng Zhang, Ying LiAbstract:Abstract The nanometer rutile titanium dioxide (TiO2) powder was adopted to act as the sonocatalyst after treatment of high-temperature activation and the ultrasound of low power was used as an irradiation source to induce heat-treated TiO2 powder performing sonocatalytic degradation of Parathion. Although there are many factors influencing sonocatalytic degradation of Parathion, the experimental results demonstrate that the optimal degradation condition of Parathion can be obtained when the experimental conditions such as initial concentration of 50 mg/L Parathion, addition amount of 1000 mg/L nanometer rutile TiO2, ultrasonic of 30–50 kHz frequency and 50 W output power, acidity of pH 10.0 and temperature of 20 °C are adopted. The degradation ratio of Parathion surpassed 90% within 120 min ultrasonic irradiation in these optimal experiment conditions. The total degradation process of Parathion has been monitored by UV–vis spectra and ion chromatography. At last, the Parathions in aqueous solution are completely degraded and become some simple inorganic ions such as NO3−, PO43−, SO42−, etc. In addition, the sonocatalytic activities of reused TiO2 catalysts were also studied and found to decline gradually along with the reused times. In this paper, the research on sonocatalytic degradation kinetics was also been performed and found to follow pseudo first-order reaction. All experiments indicated that the sonocatalytic method in the presence of nanometer rutile TiO2 powder was an advisable choice for the treatments of non- or low-transparent organic wastewaters in future.
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sonocatalytic degradation of methyl Parathion in the presence of nanometer and ordinary anatase titanium dioxide catalysts and comparison of their sonocatalytic abilities
Ultrasonics Sonochemistry, 2006Co-Authors: Jun Wang, Zhaohong Zhang, Xiangdong Zhang, Yuefeng Jiang, Lei Wang, Liang Xu, Pingli KangAbstract:Abstract The degradation of methyl Parathion (O,O-dimethyl-O-(4-nitrophenyl)-phosphorothioate) using anatase titanium dioxide (TiO2) powder as heterogeneous sonocatalysts is reported. The influences of reaction parameters such as the species of TiO2 sonocatalysts, methyl Parathion concentrations, TiO2 adding amount, pH, ultrasonic intensity, ultrasonic frequency and temperature have been investigated and the optimal conditions for eliminating methyl Parathion have been identified. The efficiencies of sonocatalytic degradation in both nanometer and ordinary anatase systems are compared and the results indicate that the sonocatalytic activity of nanometer anatase TiO2 powder is better than that of ordinary anatase TiO2 powder. The primary degradation and the total mineralization of methyl Parathion have been monitored by high performance liquid chromatography (HPLC) and UV–vis spectra, respectively. Methyl Parathion got destroyed to some extent in both nanometer and ordinary anatase systems under ultrasonic irradiation. The kinetics for the degradation process of methyl Parathion follows the first-order reaction. The degradation ratio of methyl Parathion surpassed 90% within 50 min in the optimal experiment conditions.
Xiangdong Zhang - One of the best experts on this subject based on the ideXlab platform.
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sonocatalytic degradation of methyl Parathion in the presence of micron sized and nano sized rutile titanium dioxide catalysts and comparison of their sonocatalytic abilities
Journal of Molecular Catalysis A-chemical, 2007Co-Authors: Jun Wang, Zhaohong Zhang, Xiangdong Zhang, Peng Zhang, Ronghe Li, Ying LiAbstract:Abstract Micron-sized and nano-sized rutile titanium dioxide (TiO2) powders were used as the catalysts for the sonocatalytic degradation of methyl Parathion, an organophosphorus insecticide. The ultrasound of low power was used as an irradiation source to induce the catalytic activity of the rutile TiO2 particles. It was found that the degradation of methyl Parathion sonocatalytically progressed more rapidly in the presence of TiO2 particles than only with ultrasonic irradiation in the absence of TiO2 catalyst. Moreover, the sonocatalytic activity of the micron-sized rutile TiO2 particles was obviously higher than that of nano-sized rutile TiO2 particles. The influences of reaction parameters, such as the species of TiO2 particles, methyl Parathion concentration, TiO2 amount, pH value, ultrasonic intensity, ultrasonic frequency and temperature have been investigated and the optimal conditions for eliminating methyl Parathion have been established. The processes of methyl Parathion degradation have been monitored by high performance liquid chromatography (HPLC), ion chromatography and UV–vis spectra. The results showed that methyl Parathion in aqueous solution was completely degraded to give simple inorganic ions, such as NO2−, NO3−, PO43−, SO42−, etc. The kinetics of the degradation of methyl Parathion followed the first-order reaction. The degradation percentage of methyl Parathion surpassed 95% within 80 min in the optimal experimental conditions.
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investigation on the sonocatalytic degradation of Parathion in the presence of nanometer rutile titanium dioxide tio2 catalyst
Journal of Hazardous Materials, 2006Co-Authors: Jun Wang, Zhaohong Zhang, Xiangdong Zhang, Yuefeng Jiang, Dianbo Dong, Peng Zhang, Ying LiAbstract:Abstract The nanometer rutile titanium dioxide (TiO2) powder was adopted to act as the sonocatalyst after treatment of high-temperature activation and the ultrasound of low power was used as an irradiation source to induce heat-treated TiO2 powder performing sonocatalytic degradation of Parathion. Although there are many factors influencing sonocatalytic degradation of Parathion, the experimental results demonstrate that the optimal degradation condition of Parathion can be obtained when the experimental conditions such as initial concentration of 50 mg/L Parathion, addition amount of 1000 mg/L nanometer rutile TiO2, ultrasonic of 30–50 kHz frequency and 50 W output power, acidity of pH 10.0 and temperature of 20 °C are adopted. The degradation ratio of Parathion surpassed 90% within 120 min ultrasonic irradiation in these optimal experiment conditions. The total degradation process of Parathion has been monitored by UV–vis spectra and ion chromatography. At last, the Parathions in aqueous solution are completely degraded and become some simple inorganic ions such as NO3−, PO43−, SO42−, etc. In addition, the sonocatalytic activities of reused TiO2 catalysts were also studied and found to decline gradually along with the reused times. In this paper, the research on sonocatalytic degradation kinetics was also been performed and found to follow pseudo first-order reaction. All experiments indicated that the sonocatalytic method in the presence of nanometer rutile TiO2 powder was an advisable choice for the treatments of non- or low-transparent organic wastewaters in future.
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sonocatalytic degradation of methyl Parathion in the presence of nanometer and ordinary anatase titanium dioxide catalysts and comparison of their sonocatalytic abilities
Ultrasonics Sonochemistry, 2006Co-Authors: Jun Wang, Zhaohong Zhang, Xiangdong Zhang, Yuefeng Jiang, Lei Wang, Liang Xu, Pingli KangAbstract:Abstract The degradation of methyl Parathion (O,O-dimethyl-O-(4-nitrophenyl)-phosphorothioate) using anatase titanium dioxide (TiO2) powder as heterogeneous sonocatalysts is reported. The influences of reaction parameters such as the species of TiO2 sonocatalysts, methyl Parathion concentrations, TiO2 adding amount, pH, ultrasonic intensity, ultrasonic frequency and temperature have been investigated and the optimal conditions for eliminating methyl Parathion have been identified. The efficiencies of sonocatalytic degradation in both nanometer and ordinary anatase systems are compared and the results indicate that the sonocatalytic activity of nanometer anatase TiO2 powder is better than that of ordinary anatase TiO2 powder. The primary degradation and the total mineralization of methyl Parathion have been monitored by high performance liquid chromatography (HPLC) and UV–vis spectra, respectively. Methyl Parathion got destroyed to some extent in both nanometer and ordinary anatase systems under ultrasonic irradiation. The kinetics for the degradation process of methyl Parathion follows the first-order reaction. The degradation ratio of methyl Parathion surpassed 90% within 50 min in the optimal experiment conditions.
Peng Zhang - One of the best experts on this subject based on the ideXlab platform.
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sonocatalytic degradation of methyl Parathion in the presence of micron sized and nano sized rutile titanium dioxide catalysts and comparison of their sonocatalytic abilities
Journal of Molecular Catalysis A-chemical, 2007Co-Authors: Jun Wang, Zhaohong Zhang, Xiangdong Zhang, Peng Zhang, Ronghe Li, Ying LiAbstract:Abstract Micron-sized and nano-sized rutile titanium dioxide (TiO2) powders were used as the catalysts for the sonocatalytic degradation of methyl Parathion, an organophosphorus insecticide. The ultrasound of low power was used as an irradiation source to induce the catalytic activity of the rutile TiO2 particles. It was found that the degradation of methyl Parathion sonocatalytically progressed more rapidly in the presence of TiO2 particles than only with ultrasonic irradiation in the absence of TiO2 catalyst. Moreover, the sonocatalytic activity of the micron-sized rutile TiO2 particles was obviously higher than that of nano-sized rutile TiO2 particles. The influences of reaction parameters, such as the species of TiO2 particles, methyl Parathion concentration, TiO2 amount, pH value, ultrasonic intensity, ultrasonic frequency and temperature have been investigated and the optimal conditions for eliminating methyl Parathion have been established. The processes of methyl Parathion degradation have been monitored by high performance liquid chromatography (HPLC), ion chromatography and UV–vis spectra. The results showed that methyl Parathion in aqueous solution was completely degraded to give simple inorganic ions, such as NO2−, NO3−, PO43−, SO42−, etc. The kinetics of the degradation of methyl Parathion followed the first-order reaction. The degradation percentage of methyl Parathion surpassed 95% within 80 min in the optimal experimental conditions.
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investigation on the sonocatalytic degradation of Parathion in the presence of nanometer rutile titanium dioxide tio2 catalyst
Journal of Hazardous Materials, 2006Co-Authors: Jun Wang, Zhaohong Zhang, Xiangdong Zhang, Yuefeng Jiang, Dianbo Dong, Peng Zhang, Ying LiAbstract:Abstract The nanometer rutile titanium dioxide (TiO2) powder was adopted to act as the sonocatalyst after treatment of high-temperature activation and the ultrasound of low power was used as an irradiation source to induce heat-treated TiO2 powder performing sonocatalytic degradation of Parathion. Although there are many factors influencing sonocatalytic degradation of Parathion, the experimental results demonstrate that the optimal degradation condition of Parathion can be obtained when the experimental conditions such as initial concentration of 50 mg/L Parathion, addition amount of 1000 mg/L nanometer rutile TiO2, ultrasonic of 30–50 kHz frequency and 50 W output power, acidity of pH 10.0 and temperature of 20 °C are adopted. The degradation ratio of Parathion surpassed 90% within 120 min ultrasonic irradiation in these optimal experiment conditions. The total degradation process of Parathion has been monitored by UV–vis spectra and ion chromatography. At last, the Parathions in aqueous solution are completely degraded and become some simple inorganic ions such as NO3−, PO43−, SO42−, etc. In addition, the sonocatalytic activities of reused TiO2 catalysts were also studied and found to decline gradually along with the reused times. In this paper, the research on sonocatalytic degradation kinetics was also been performed and found to follow pseudo first-order reaction. All experiments indicated that the sonocatalytic method in the presence of nanometer rutile TiO2 powder was an advisable choice for the treatments of non- or low-transparent organic wastewaters in future.
