石墨负载TiO2薄膜电极光电催化降解甲基橙研究
收稿日期: 2005-07-22
网络出版日期: 2010-10-01
基金资助
广东省科技计划项目(2004B10301010)
Studies on the photoe lectrocatalytic degradation of methyl orange by using TiO2 coated on graphite films lectrode
Received date: 2005-07-22
Online published: 2010-10-01
孔祥晋, 潘湛昌, 张环华, 肖楚民 . 石墨负载TiO2薄膜电极光电催化降解甲基橙研究[J]. 工业水处理, 2005 , 25(12) : 24 -26 . DOI: 10.11894/1005-829x.2005.25(12).24
TiO2 deposited on graphite thin films is prepared by sol-gel method,Using the TiO2 electrode as working electrode,the photoelectrocatalytic(PEC) system is set up.Applying this system,the degradation of methyl orange in aqueous solution is investigated in terms of decolorization.The key factors affecting the PEC oxidation efficiency are studied,including the initial concentration of methyl orange solution,electrode potential,the number of coating layers and airflow.It is found that an optimal bias voltage of 2.0 V,3 coating layers and airflow are favourable for the removal of methyl orange in aqueous solution.Our investigation shows that graphite is a good carrier,and PEC oxidation is a convenient way to mineralize the organic pollutants with high efficiency.
Key words: photocatalysis; photoelectrocatalysis; titaniumdioxide; filmelectrode
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