| ZnO薄膜光电催化降解乙酰甲胺磷 |
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| 引用本文： | 胡友娇,杨冬梅,杨昌柱,濮文虹,张敬东.ZnO薄膜光电催化降解乙酰甲胺磷[J].环境化学,2012,31(3):335-340. |
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| 作者姓名： | 胡友娇 杨冬梅 杨昌柱 濮文虹 张敬东 |
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| 作者单位： | 1. 华中科技大学环境科学与工程学院,武汉,430074
2. 华中科技大学化学与化工学院,武汉,430074 |
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| 摘 要： | 采用溶胶-凝胶法制备了ZnO薄膜,并通过光电流响应、EIS、SEM、XRD等分析方法对其光电化学性能、表面形貌和结构进行表征.以制备的ZnO薄膜为工作电极对乙酰甲胺磷进行光电催化降解.实验表明,ZnO薄膜电极在UV照射下能够有效地光电催化降解乙酰甲胺磷,加入适量H2O2后具有一定的协同作用.在H2O2浓度为9.908 mmol.L-1,外加电压为1.2 V,支持电解液Na2SO4浓度为0.01 mol.L-1,溶液pH值为5.4的条件下,对0.1 mmol.L-1的乙酰甲胺磷180 min的降解率可达到89.6%.
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| 关 键 词： | 溶胶-凝胶法 ZnO薄膜 光电催化 乙酰甲胺磷 |
Photoelectrocatalytic degradation of acephate on ZnO thin-film electrode |
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| HU Youjiao,YANG Dongmei,YANG Changzhu,PU Wenhong,ZHANG Jingdong.Photoelectrocatalytic degradation of acephate on ZnO thin-film electrode[J].Environmental Chemistry,2012,31(3):335-340. |
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| Authors: | HU Youjiao YANG Dongmei YANG Changzhu PU Wenhong ZHANG Jingdong |
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| Institution: | 1.School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan,430074,China; 2.School of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan,430074,China) |
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| Abstract: | ZnO thin-film were prepared by the sol-gel method.The photoelectrochemical properties,surface morphology and structure of ZnO thin-film were characterized by photocurrent response,electrochemical impedance spectroscopy(EIS),scanning electron microscopy(SEM) and X-ray diffraction(XRD).ZnO thin-film were utilized as the working electrode in the photoelectrocatalytic degradation of acephate.The results showed that ZnO thin-film electrode effectively degraded acephate under UV irradiation in the presence of H2O2.The photoeletrocatalytic degradation efficiency for 0.1 mmol·L-1 acephate reached 89.6% within 3 hours under the conditions of 9.908 mmol·L-1 H2O2,external bias potential 1.2 V,pH 5.4 and 0.01 mol·L-1 Na2SO4. |
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| Keywords: | sol-gel method ZnO thin-film photoelectrocatalysis acephate |
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