Yang Zhongxiang, Shang Zhichao, Liu Fang, Chen Yirui, Wang Xiaohong, Zhang Bangsheng, Liu Guiqing
School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou 221116, People's Republic of China.
Department of Aerial Ammunition Support, Air Force Logistics College, Xuzhou 221116, People's Republic of China.
Nanotechnology. 2021 May 14;32(20):205602. doi: 10.1088/1361-6528/abe575.
The hollow porous microspheres assembled with BiOCl nanocrystals were successfully synthesized via a facile spray solution combustion synthesis method. The microstructure, morphology, absorbance, optical properties of the samples were investigated in detail. The results show that hollow porous BiOCl microspheres have narrow band gaps (2.66-2.71 eV), and the degradation rate of rhodamine B (RhB) can reach 98% under visible light irradiation for 60 min. Furthermore, the mechanism of the photocatalytic degradation of RhB was proposed through the experiment of trapping active species. This excellent photocatalytic property can be ascribed to the larger specific surface area and the special microstructure.
通过一种简便的喷雾溶液燃烧合成方法成功合成了由BiOCl纳米晶体组装而成的中空多孔微球。详细研究了样品的微观结构、形态、吸光度和光学性质。结果表明，中空多孔BiOCl微球具有窄带隙（2.66 - 2.71 eV），在可见光照射60分钟下，罗丹明B（RhB）的降解率可达98%。此外，通过捕获活性物种的实验提出了RhB的光催化降解机理。这种优异的光催化性能可归因于较大的比表面积和特殊的微观结构。
