Bismuth-based photocatalytic semiconductors: Introduction, challenges and possible approaches

被引:502
作者
Meng, Xiangchao [1 ]
Zhang, Zisheng [1 ]
机构
[1] Univ Ottawa, Dept Chem & Biol Engn, Ottawa, ON K1N 6N5, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Photocatalysis; Bismuth; Visible-light-responsive; Environmental; Water splitting; VISIBLE-LIGHT IRRADIATION; P-N HETEROJUNCTION; MICROWAVE HYDROTHERMAL SYNTHESIS; BIOX X; SOLVOTHERMAL SYNTHESIS; HIGHLY EFFICIENT; ELECTRONIC-STRUCTURES; COMPOSITE PHOTOCATALYSTS; CONTROLLABLE SYNTHESIS; FACILE SYNTHESIS;
D O I
10.1016/j.molcata.2016.07.030
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Bismuth-based semiconductors are a unique and promising group of recently developed advanced photocatalytic materials. They have been widely applied in several areas including the generation of H-2 by splitting water, decomposition of organic and inorganic pollutants in both wastewater and polluted air, and organic synthesis through harvesting the energy of light. The electronic structure of bismuth-based semiconductors confers them with a suitable band gap for visible-light response and a well-dispersed valence band composed of hybrid orbitals of Bi6s and O2p, making them a promising candidate when compared to other metal oxide semiconductors. In addition, they are simple to operate and prepare with controlled morphologies, making them attractive as potential photocatalysts. The purposes of this review are (1) summarization of advanced bismuth-based compounds that have been applied to date, (2) statement of challenges facing this material and possible approaches to overcome them, and (3) suggestions for future work. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:533 / 549
页数:17
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