一种铋基氯氧化物Bi(3)O(4)Cl的光催化活性。

Photocatalytic activity of a Bi-based oxychloride Bi(3)O(4)Cl.

作者信息

Lin Xinping, Huang Tao, Huang Fuqiang, Wang Wendeng, Shi Jianlin

机构信息

State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.

出版信息

J Phys Chem B. 2006 Dec 7;110(48):24629-34. doi: 10.1021/jp065373m.

DOI:10.1021/jp065373m

PMID:17134224

Abstract

A Bi-based oxychloride Bi(3)O(4)Cl with a layered structure as a novel efficient photocatalyst was studied in the present paper. The compound synthesized by a solid-state reaction method has a band gap of 2.79 eV. The material possesses a fair visible-light-induced photocatalytic activity. Generally, the photocatalytic efficiency of Bi(3)O(4)Cl for degrading methyl orange (MO) is higher than that of anatase TiO(2) under UV light illumination. The dispersion of Ag over Bi(3)O(4)Cl leads to an obvious increase in the photocatalytic performance. The MO decolorization over Bi(3)O(4)Cl is mainly initiated by a photocatalytic process. The photocatalytic activity is discussed in close connection with the crystal structure and the electronic structure in details.

摘要

本文研究了一种具有层状结构的新型高效光催化剂——铋基氯氧化物Bi(3)O(4)Cl。通过固相反应法合成的该化合物的带隙为2.79 eV。该材料具有良好的可见光诱导光催化活性。一般来说，在紫外光照射下，Bi(3)O(4)Cl降解甲基橙（MO）的光催化效率高于锐钛矿型TiO(2)。Ag在Bi(3)O(4)Cl上的分散导致光催化性能明显提高。Bi(3)O(4)Cl上的MO脱色主要由光催化过程引发。结合晶体结构和电子结构详细讨论了光催化活性。