Photocatalytic degradation kinetics of unsymmetrical dimethylhydrazine in aqueous solution by Fe3+ doped Bi2O3

3rd International Conference on New Material and Chemical Industry

材料科学;化学工业

Qi, J.^1 ; Zhao, B.^1 ; Wang, Y.^1 ; Wu, Y.^1 ; Xu, Z.L.^1 ; Hou, Z.W.^1 ; Yan, J.J.^1

China Jiuquan Satellite Launch Centre, Gansu Jiuquan

732750, China^1

关键词: Degradation efficiency;    Kinetic reaction rate constants;    Photo catalytic degradation;    Possible mechanisms;    Pseudo-first order reactions;    Simulated wastewater;    Target pollutants;    Unsymmetrical dimethylhydrazine;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/479/1/012034/pdf
DOI  :  10.1088/1757-899X/479/1/012034

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The Fe3+ doped Bi2O3 photocatalyst was prepared by sol-gel method. The photocatalytic degradation experiment was carried out using unsymmetrical dimethylhydrazine (UDMH) simulated wastewater as the target pollutant. The results showed that Fe3+ doping significantly improved the degradation efficiency of UDMH with an optimum doping concentration of 2.0%. The reaction kinetics study indicated that the reaction was heterogeneously catalyzed and the kinetic fitting results were consistent with pseudo first-order reaction kinetics model. According to the results of linear fitting, the kinetic reaction rate constant of Fe3+ doped Bi2O3 (2.0%) was the largest, about 1.9 times as much as that of undoped Bi2O3. Finally, a possible mechanism was proposed to explain the enhanced photocatalytic activity.