Bi基半导体光催化剂具备独特的电子能带结构、可调节与可拓展的光谱响应范围、低毒及组成元素供给丰富等优点，使其成为高效、可实用型光催化剂的重要候选者。而Bi基非金属氧酸盐作为新型半导体光催化剂，其非金属氧酸根的表面修饰作用及高结晶性使其呈现出更加独特的光催化活性。本文简要介绍了Bi基半导体光催化剂的结构特性及近几年的研究进展，重点综述了Bi基非金属氧酸盐的一员——Bi2SiO5及其制备、异质结的构建和电子能带结构的研究进展，并对其今后的研究与应用方向作了进一步的展望。
Bi-based semiconductors possess many merits such as unique electronic energy band structures, adjustable and extensible spectral response ranges, low toxicity and a wealth of element resources supply, thus becoming one type of the most promising candidates for photocatalysis with high-efficiency and practicability. Especially noteworthy is that the Bi-based nonmetal oxysalts exhibit specifically characteristic photocatalytic activities due to their high crystallinity and surface modification effect of the nonmetal oxyacid ions. In this paper, the research progress of Bi-based semiconductors in recent years is briefly introduced. Particularly, the research progress in synthesis, construction of heterojunction and the electronic energy band structure of Bi2SiO5 is reviewed, and its future researches and applications are also prospected.
Contents
1 Introduction
2 Research status and development trend
2.1 Bi-based photocatalysts
2.2 Bi-based nonmetal oxysalt photocatalysts
2.3 Bi2SiO5 photocatalyst
3 Conclusion and outlook
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