光催化
材料科学
纳米片
可见光谱
氧气
铋
甲基橙
光化学
降级(电信)
化学工程
辐照
纳米技术
光电子学
吸收(声学)
催化作用
化学
复合材料
有机化学
冶金
工程类
核物理学
物理
电信
计算机科学
作者
Yongchao Huang,Haibo Li,Muhammad‐Sadeeq Balogun,Wenyue Liu,Yexiang Tong,Xihong Lu,Hongbing Ji
摘要
With the increasingly serious environmental problems, photocatalysis has recently attracted a great deal of attention, with particular focus on water and air purification and disinfection. Herein, we show an electroreduction strategy to improve significantly the solar absorption and donor density of BiOI nanosheet photocatalyst by introducing oxygen vacancies. These oxygen-deficient BiOI nanosheets exhibit an unexpected red shift of about 100 nm in light absorption band and 1 order of magnitude improvement in donor density compared to the untreated BiOI nanosheets and show 10 times higher photocatalytic activity than the untreated BiOI nanosheets for methyl orange (MO) degradation under visible light irradiation. Moreover, the as-prepared oxygen-deficient BiOI nanosheets also have excellent cycling stability and superior photocatalytic performance toward other dye pollutants.
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