Photocatalytic oxidation of ammonia by Bi_2WO_6 nanoplates using fluorescent light  

作　　者：Ling Zhang Wenzhong Wang Songmei Sun 

机构地区：[1]State Key Laboratory of High Performance Ceramics and Superfine Microstructures,Shanghai Institute of Ceramics,Chinese Academy of Sciences

出　　处：《Chinese Science Bulletin》2014年第18期2181-2185,共5页

基　　金：supported by the National Natural Science Foundation of China (51272269,51272303,51102262);the National Basic Research Program of China (2010CB933503,2013CB933203)

摘　　要：Photocatalytic oxidation under fluorescent light with Bi2WO6was used to oxidize ammonia.The results showed that the NH4+/NH3 could be totally converted into NO3-and trace amount of NO2-in an alkaline solution.It was revealed that the photocatalytic oxidation efficiency was affected by the pH values and the initial concentration of the pollutant.Possible mechanism of photocatalytic oxidation in the system is proposed.The superoxide species(?O2-)captured by the superoxide dismutase levels could accelerate the photocatalytic oxidation reaction.The indoor fluorescent lamp as the light source will be a promising option for future applications of photocatalytic technology.Photocatalytic oxidation under fluorescent light with BizW06 was used to oxidize ammonia. The results showed that the NHa＋/NH3 could be totally converted into NO3- and trace amount of NO2- in an alkaline solution. It was revealed that the photocatalytic oxidation efficiency was affected by the pH values and the initial concentration of the pollutant. Possible mechanism of photocatalytic oxidation in the system is proposed. The superoxide spe- cies （O2-） captured by the superoxide dismutase levels could accelerate the photocatalytic oxidation reaction. The indoor fluorescent lamp as the light source will be a promising option for future applications of photocatalytic technology.

关 键 词：光催化氧化反应 荧光灯 氧化氨 超氧化物歧化酶 纳米 碱性溶液 初始浓度 氧化效率 

分 类 号：O643.32[理学—物理化学]