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ZnO薄膜光电催化降解乙酰甲胺磷

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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.
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.
shu
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.
Citation: 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.
shu

ZnO薄膜光电催化降解乙酰甲胺磷

  • 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

Photoelectrocatalytic degradation of acephate on ZnO thin-film electrode

  • 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

  • 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%.
    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稬-1 acephate reached 89.6% within 3 hours under the conditions of 9.908 mmol稬-1 H2O2, external bias potential 1.2 V, pH 5.4 and 0.01 mol稬-1 Na2SO4.
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  • 收稿日期:  2011-05-09
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.
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.
shu
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.
Citation: 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.
shu

ZnO薄膜光电催化降解乙酰甲胺磷

  • 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
  • 收稿日期:  2011-05-09

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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