期刊
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
卷 244, 期 -, 页码 12-22出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mseb.2019.04.005
关键词
Acidified sepiolite; BiOBr; PVP; Visible light photocatalysis
资金
- National Natural Science Foundation of China [51302239]
- Specialized Research Fund for the Doctoral Program of Higher Education [2134301120007]
- Hunan Provincial Natural Science Foundation of China [2015JJ6109]
A novel hollow PVP/AS/BiOBr hierarchical microsphere was successfully fabricated with surface modifications of acidized sepiolite (AS) and polyvinyl pyrrolidone (PVP). The structure, morphology and optical properties of the PVP/AS/BiOBr were systematically characterized. The degradation of rhodamine B (RhB) and diclofenac sodium aqueous solution were studied using this composite photocatalyst to determine the optimal blending rate of AS (6%). The result also indicated that the photocatalytic activity of PVP/AS/BiOBr photocatalysts were superior to that of AS/BiOBr. The enhanced activities of PVP/AS/BiOBr could be attributed to the hollow structure, the improved visible light absorption, the effective separation of photogenerated electron-hole pairs and narrowing band-gap. In addition, the possible photocatalytic degradation pathways of PVP/AS/BiOBr were also analyzed through tracking the degradation by-products. After consecutive degradation experiments, the degradation performance and the catalyst structure both remained unchanged, highlighting the excellent stability and reusability of this novel catalyst.
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