Graphene Oxide/BiOCl Nanocomposite Films as Efficient Visible Light Photocatalysts

Frontiers in Chemistry

Yi Zhu¹  Xiang Yu²  Yuanming Zhang³  Weitian Lin³ 

[1] Testing Center, Jinan University, Guangzhou, China;;Analytical &Department of Chemistry, Jinan University, Guangzhou, China;

关键词: graphene;    BiOCl;    film;    visible-light;    photocatalytic activity;   

DOI  :  10.3389/fchem.2018.00274

来源: DOAJ

【 摘 要 】

A novel graphene oxide/BiOCl (GO/BiOCl) nanocomposite film was prepared via a spread coating method. In visible-light photocatalytically degrading Rhodamine B (RhB) experiments, 2 wt% GO/BiOCl could degrade 99% of RhB within 1.5 h and the rate constant was 12.2 times higher than that of pure BiOCl. The degradation efficiency still kept at 80% even after 4 recycles, evidencing the relatively good recyclability. The enhancement was attributed to the improvement of visible light adsorption and charge separation. Holes and superoxide radicals·O2- played a major role as reactive species. The values of conduction band and valence band for GO and BiOCl were calculated and a new photocatalytic mechanism of GO/BiOCl nanocomposite was proposed.

【 授权许可】

Unknown