| Co-BiVO4薄膜电极光电处理Pb/Cu-EDTA研究 |
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| 引用本文： | 杨桂蓉,魏连雨,李静,郭礼宝,张宝锋,王超,赵旭. Co-BiVO4薄膜电极光电处理Pb/Cu-EDTA研究[J]. 环境科学学报, 2014, 34(4): 914-919 |
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| 作者姓名： | 杨桂蓉 魏连雨 李静 郭礼宝 张宝锋 王超 赵旭 |
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| 作者单位： | 1. 河北工业大学土木工程学院, 天津 300401;2. 中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085;河北工业大学土木工程学院, 天津 300401;河北工业大学土木工程学院, 天津 300401;中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085;中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085;河北工业大学土木工程学院, 天津 300401;中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085 |
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| 基金项目： | 国家自然科学基金优秀青年基金项目（No.51222802） |
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| 摘 要： | 采用非晶态配合物法及浸渍提拉法在导电玻璃基底上制备了Co-BiVO4薄膜电极,并采用此电极进行了光电处理重金属络合物研究.通过X射线衍射对电极的晶体结构进行了表征,发现薄膜中Co-BiVO4为单斜晶晶型.Co-BiVO4电极降解Pb-EDTA实验中,在1.5 V、反应时间120 min时,光电催化氧化和电化学作用对Pb-EDTA的降解率分别为75%和65%,Pb的回收率分别为70%与35%;光催化作用基本没有效果.破络合后的Pb2+主要以Pb(II)的形式附着在阳极上.Co-BiVO4电极降解Cu-EDTA实验中,在2.5 V、反应时间120 min时,光电催化氧化与电化学作用对Cu-EDTA的降解率分别为70%与50%,Cu的回收率分别为70%与50%;绝大部分游离态的Cu2+在阴极得电子形成Cu单质.
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| 关 键 词： | Co-BiVO 薄膜电极 光电催化氧化 Pb-EDTA Cu-EDTA |
| 收稿时间： | 2013-07-22 |
| 修稿时间： | 2013-08-19 |
Photoelectrocatalytic treatment of Pb/Cu-EDTA at Co-BiVO4 film electrode |
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| YANG Guirong,WEI Lianyu,LI Jing,GUO Libao,ZHANG Baofeng,WANG Chao and ZHAO Xu. Photoelectrocatalytic treatment of Pb/Cu-EDTA at Co-BiVO4 film electrode[J]. Acta Scientiae Circumstantiae, 2014, 34(4): 914-919 |
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| Authors: | YANG Guirong WEI Lianyu LI Jing GUO Libao ZHANG Baofeng WANG Chao ZHAO Xu |
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| Affiliation: | 1. School of Civil Engineering, Hebei University of Technology, Tianjin 300401;2. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085;School of Civil Engineering, Hebei University of Technology, Tianjin 300401;School of Civil Engineering, Hebei University of Technology, Tianjin 300401;State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085;State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085;School of Civil Engineering, Hebei University of Technology, Tianjin 300401;State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 |
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| Abstract: | In the current work, Co-BiVO4 film was deposited onto ITO substrate from a complex solution by dip-coating method, which was used as anode to degrade Pb/Cu-EDTA. The crystalline of the Co-BiVO4 film was confirmed to be monoclinic crystal. At 1.5 V, the removal efficiencies of Pb-EDTA by photoelectrocatalytic process and electro-oxidation were determined to be 75% and 65% after 120 min. Nearly no removal of Pb-EDTA was observed in the photocatalysis process. The liberated Pb2+ was observed to be deposited onto the anode surface. In the case of Cu-EDTA, the removal efficiencies of Cu-EDTA by photoelectrocatalytic process and electro-oxidation were determined to be 70% and 50%, respectively, and all the liberated Cu2+ was deposited onto the cathode. |
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| Keywords: | Co-BiVO4 film electrode photoelectrocatalysis Pb-EDTA Cu-EDTA |
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