期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 617, 期 -, 页码 73-83出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2022.02.082
关键词
BiOCl; Photocatalysis; Exposed facet; Tetracycline hydrochloride; Oxygen vacancy
资金
- National Natural Science Foundation of China, China [21571132]
- School-Local Cooperation Fund of the Education Department of Liaoning Province [070/200910036]
This study prepared BiOCl with a specific crystal facet and constructed oxygen vacancies, improving the photocatalyst activity and generation of free radicals. The degradation rate of tetracycline hydrochloride was significantly enhanced by the synergistic effect of hierarchical structure and oxygen vacancy defects.
Because of different atomic arrangements and/or different exposed atoms on different surfaces of crystalline particles, different physical and chemical properties can be resulted and exhibited. In this work, we prepared BiOCl with {110} crystal facet by introducing urea as the structure-directing agent, and constructed oxygen vacancies (OVs) in BiOCl (110) to form BiOCl (11 0)-OV. Control of exposure surface can improve photocatalyst activity and the defect level caused by OVs can improve charge separation and light absorption, thereby further enhancing the production of free radicals and the activation of pollutants. Due to the synergistic effect of the hierarchical microsphere structure of BiOCl and OVs, the degradation rate of tetracycline hydrochloride (20 mg/L) in the presence of BiOCl (11 0)-OV can reach 95.1% after 15 min of the simulated sunlight illumination. This research provides novel ideas for the design and development of photocatalyst with hierarchical structure and oxygen vacancy defects. (c) 2022 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据