源自微晶纤维素的CdS修饰的TiO₂/碳核壳微球的光催化活性增强

Enhanced Photocatalytic Activity of CdS-Decorated TiO₂/Carbon Core-Shell Microspheres Derived from Microcrystalline Cellulose.

作者信息

Liu Xin, Li Yinliang, Yang Jun, Wang Bo, Ma Mingguo, Xu Feng, Sun Runcang, Zhang Xueming

机构信息

Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.

State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.

出版信息

Materials (Basel). 2016 Mar 29;9(4):245. doi: 10.3390/ma9040245.

DOI:10.3390/ma9040245

PMID:28773368

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5502897/

Abstract

The fabrication of reusable and biodegradation materials from renewable resources such as cellulose is essential for a sustainable world. The core-shell structured CdS-decorated TiO₂/Carbon microspheres (CdS/TiO₂/Carbon MS) photocatalyst was synthesized with controlled hydrolysis and a novel sonochemical method. It was prepared by using crosslinked microcrystalline cellulose as the core, tetrabutyl titanate as the titania source and CdS as the photosensitizer. The morphology, chemical structure and properties of the obtained material were characterized by many means. Additionally, the photocatalytic activity of the CdS/TiO₂/Carbon MS was evaluated by the photodegradation efficiency of Rhodamine B solution, which reached 95.24% under visible light irradiation. This study demonstrated the excellent photocatalytic performance of CdS/TiO₂/Carbon MS, which might have promising applications in environmental treatments.

摘要

从纤维素等可再生资源制备可重复使用和可生物降解的材料对可持续发展的世界至关重要。采用控制水解和新型声化学方法合成了核壳结构的硫化镉修饰二氧化钛/碳微球（CdS/TiO₂/碳微球）光催化剂。它是以交联微晶纤维素为核、钛酸四丁酯为二氧化钛源、硫化镉为光敏剂制备而成。通过多种手段对所得材料的形貌、化学结构和性能进行了表征。此外，通过罗丹明B溶液的光降解效率评估了CdS/TiO₂/碳微球的光催化活性，在可见光照射下其光降解效率达到95.24%。本研究证明了CdS/TiO₂/碳微球具有优异的光催化性能，在环境处理方面可能具有广阔的应用前景。