光催化
纳米结构
异质结
复合数
光电流
可见光谱
降级(电信)
材料科学
介电谱
电化学
纳米技术
化学工程
光电子学
化学
复合材料
电极
催化作用
物理化学
工程类
计算机科学
电信
生物化学
作者
Pu Wang,Na Lü,Yan Su,Ning Liu,Hongtao Yu,Jie Li,Yan Wu
标识
DOI:10.1016/j.apsusc.2017.06.127
摘要
WO3@g-C3N4 composite photocatalysts with [email protected] nanostructure were fabricated via a self-assembly method. A large heterojunction interfacial area of WO3@g-C3N4 can be provided in the nanoscale heterostructure. Furthermore, the electron mobility of the composite photocatalysts was improved with the introduction of WO3. These are favorable for increasing the separation efficiency of photoinduced electron-hole pairs and improving the photocatalytic efficiency of WO3@g-C3N4, which was confirmed by the measurements of photocurrent and electrochemical impedance spectroscopy. The results of the photocatalytic degradation of Rh B showed dramatic photocatalytic performance of this composite photocatalyst. The kinetic constant of Rh B degradation on the WO3@g-C3N4 was 0.95 h−1, which was 7.7-fold and 3.5-fold higher than those on pure WO3 and g-C3N4 nanosheets, respectively. In addition, the stability of the composite photocatalyst was also satisfactory according to the result of the three-cycle experiment.
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