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- Title
Synthesis, Characterization, and Photocatalytic Activity of N-Doped ZnO/ZnS Composites.
- Authors
Hongchao Ma; Xiaohong Cheng; Chun Ma; Xiaoli Dong; Xinxin Zhang; Mang Xue; Xiufang Zhang; Yinghuan Fu
- Abstract
The aim of the present study is to enhance photocatalytic performance of ZnO semiconductor by comodification with doping of nonmetal ions and coupling with another semiconductor. Therefore, we synthesized the N-doped ZnO/ZnS photocatalysts via a simple heat-treatment approach using L-cysteine asNand S source in this work. Anthraquinone dye (reactive brilliant blue KNR) is employed as themodel contaminants to evaluate the photocatalytic activity of as-synthesized samples under sunlight illumination. The N-doped ZnO/ZnS synthesized by this method shows better photocatalytic activity as compared to that of pure ZnO. The enhanced photocatalytic activity of the N-doped ZnO/ZnS composites may be related to the existence of N doping, ZnS/ZnO heterostructure, and covered abundant carbon species on the photocatalyst surface, which causing high absorption efficiency of light, efficient separation of electron-hole pairs, and quick surface reaction in doped ZnO.
- Subjects
PHOTOCATALYSIS; ZINC oxide; COMPOSITE materials; SEMICONDUCTORS; METAL ions; DOPING agents (Chemistry); ANTHRAQUINONE dyes
- Publication
International Journal of Photoenergy, 2013, p1
- ISSN
1110-662X
- Publication type
Article
- DOI
10.1155/2013/625024