钛基金属氧化物电极制备及其氨氮废水降解性能

李雪; 薛梦; 黄令; 李君涛; 孙世刚

doi:10.13208/j.electrochem.140227

电化学 >

2015 , Vol. 21 >Issue 1: 78 - 84

DOI: https://doi.org/10.13208/j.electrochem.140227

研究论文

钛基金属氧化物电极制备及其氨氮废水降解性能

李雪 ,
薛梦 ,
黄令 ,
李君涛 ,
孙世刚

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1. 厦门大学化学化工学院，福建厦门361005，2. 厦门大学能源研究院，福建厦门 361100

收稿日期: 2014-02-27

修回日期: 2014-03-15

网络出版日期: 2014-03-21

基金资助

厦门市科技计划项目（No. 3502Z20103010）资助

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Preparation and Properties of Titanium based Metal Oxide Electrodes for Ammonia Nitrogen Wastewater Treatment

LI Xue ,
XUE Meng ,
HUANG Ling ,
LI Jun-Tao ,
SUN Shi-Gang

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1. Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China; 2. College of Energy, Xiamen University, Xiamen 361102, Fujian, China

Received date: 2014-02-27

Revised date: 2014-03-15

Online published: 2014-03-21

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摘要

采用热分解方法制备了4种电极钛基金属氧化物：Ti/SnO₂+Sb₂O₃、Ti/SnO₂+Sb₂O₃/SnO₂+IrO₂、Ti/SnO₂+Sb₂O₃/SnO₂+RuO₂和Ti/SnO₂+Sb₂O₃/SnO₂+CeO₂. X-射线衍射分析表明Ti/SnO₂+Sb₂O₃/SnO₂+CeO₂电极的CeO₂晶体结构完好，连续工作较长时间电极表面没有明显析氧. 使用该电极电解氧化氨氮模拟废水（降解2 h），氨氮模拟废水从高浓度（500 mg·L^-1）降解为较低浓度（180 mg·L^-1），降解效率可达64%，电解活性最佳.

关键词： 氨氮; 电化学氧化; 钛基氧化物电极

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李雪 , 薛梦 , 黄令 , 李君涛 , 孙世刚 . 钛基金属氧化物电极制备及其氨氮废水降解性能[J]. 电化学, 2015 , 21(1) : 78 -84 . DOI: 10.13208/j.electrochem.140227

Abstract

In this paper, four types of titanium based metal oxides electrodes were prepared by thermal decomposition method: Ti/SnO₂+Sb₂O₃, Ti/SnO₂+Sb₂O₃/SnO₂+IrO₂, Ti/SnO₂+Sb₂O₃/SnO₂+RuO₂, Ti/SnO₂+Sb₂O₃/SnO₂+CeO₂. The XRD results show that CeO₂ in Ti/SnO₂+Sb₂O₃/SnO₂+CeO₂ displayed a good crystal structure, and there was no significant oxygen evolution reaction occurred after electrolytic oxidation. Compared with the other three electrodes, the Ce-doped electrode exhibited the best electro-catalytic activity: the degradation of the simulated wastewater with high concentration (500 mg·L^-1) was 180 mg·L^-1, and the degradation efficiency was up to 64%.

Key words： ammonia nitrogen; electrochemical oxidation; Ti-based electrode

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