苯酚
氧化剂
催化作用
激进的
光催化
降级(电信)
原位
光化学
化学
污染物
复合数
化学工程
核化学
材料科学
有机化学
复合材料
工程类
电信
计算机科学
作者
Li Tan,Yiming Chen,Didi Li,Shaobin Wang,Zhimin Ao
出处
期刊:Nanomaterials
[MDPI AG]
日期:2022-09-06
卷期号:12 (18): 3089-3089
被引量:3
摘要
An in situ photo-Fenton system can continuously generate H2O2 by photocatalysis, activating H2O2 in situ to form strong oxidizing ·OH radicals and degrading organic pollutants. A WSe2/g-C3N4 composite catalyst with WSe2 as a co-catalyst was successfully synthesized in this work and used for in situ photo-Fenton oxidation. The WSe2/g-C3N4 composite with 7% loading of WSe2 (CNW2) has H2O2 production of 35.04 μmol/L, which is fourteen times higher than pure g-C3N4. The degradation efficiency of CNW2 for phenol reached 67%. By constructing an in situ Fenton-system, the phenol degradation rate could be further enhanced to 90%. WSe2 can enhance the catalytic activity of CNW2 by increasing electron mobility and inhibiting the recombination of photogenerated electron-hole pairs. Moreover, the addition of Fe2+ activates the generated H2O2, thus increasing the amount of strong oxidative ·OH radicals for the degradation of phenol. Overall, CNW2 is a promising novel material with a high H2O2 yield and can directly degrade organic pollutants using an in situ photo-Fenton reaction.
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