光催化
材料科学
钨酸盐
激进的
表面等离子共振
氧气
降级(电信)
苯酚
铋
可见光谱
电子顺磁共振
光化学
化学工程
罗丹明B
催化作用
纳米技术
纳米颗粒
化学
有机化学
光电子学
核磁共振
冶金
工程类
物理
电信
计算机科学
作者
Xingyun Jin,Shiyun Lei,Jiufu Chen,Junbo Zhong,Shulin Zhang,Xiaoqian Tang
标识
DOI:10.1016/j.surfin.2021.101648
摘要
In this work, the photocatalytic performance of bismuth tungstate (Bi2WO6) was notably improved through the synergism of oxygen vacancies (OVs) and surface plasmon resonance (SPR) effect of Bi0. After treated with NaBH4 solution, the content of OVs and Bi0 on the surface of Bi2WO6 can be regulated. The effects of the NaBH4 solution treatment on visible-light photocatalytic performance of Bi2WO6-based photocatalysts on the degradation of rhodamine B (RhB), tetracycline (TC) and phenol (PhOH) were indagated. The highest photocatalytic performance was obtained for BWO-100. The degradation reaction rate constant of RhB, TC and PhOH on BWO-100 is 2.3, 1.65 and 2.1 times of that over the fresh Bi2WO6, respectively. Introduction of richer OVs and relative lower content of metal Bi0 endows Bi2WO6 with highly efficient separation of photogenerated carriers, which leads to increased superoxide radicals (•O2−), hydroxyl radicals (•OH), and the experimental results have proven that they are the main active substances that mineralize above three typical organic pollutants. This demonstration provides a reference for design highly efficient photocatalysts by a mild strategy.
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