Abstract：A photoelectrocatalysis (PEC) system was constructed to degrade the methyl orange (MO). In this system, Ag/TiO2 nanotube arrays (Ag/TNTAs), used as the anode, were prepared with the combination method of anodization and electrochemical deposition, and the carbon/PTFE was used as the cathode. It was found that this Ag/TNTAs PEC system achieved a much higher degradation efficiency of 68.2% than those of photocatalysis (18.9%), electrochemical oxidation (38.2%) and direct photolysis. Besides, the addition of effluent organic matter (EfOM) from water treatment plants could promote the degradation of MO in the Ag/TNTAs PEC system when the initial EfOM concentration was equal or less than 1.0 mgC/L. when the EfOM concentration was 0.4 mgC/L, the enhancing effect achieved the high degree. However, the high concentrations of EfOM inhibited the degradation performance of MO in the PEC system. This study showed that the PEC system could catalyze the degradation of dyes efficiently, and the addition of EfOM within a certain threshold concentration range could further promote the photocatalytic degradation.
何欢, 马启程, 邓弘宇, 黄斌, 普红平, 万幸, 潘学军. Ag/TiO2光电催化降解染料及出水有机质影响机制[J]. 中国环境科学, 2021, 41(4): 1689-1696.
HE Huan, MA Qi-cheng, DENG Hong-yu, HUANG Bin, PU Hong-ping, WAN Xing, PAN Xue-jun. Ag/TiO2 photoelectrocatalytic degradation of dye and effluent organic matter influence on its mechanism. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(4): 1689-1696.
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