Cs-doped α-Bi2O3 microplates: Hydrothermal synthesis and improved photochemical activities

被引：32

作者：

Huang, Yanlin ^{[1
]}

Qin, Jie ^{[1
]}

Hu, Changhao ^{[1
]}

Liu, Xuanxuan ^{[1
]}

Wei, Donglei ^{[2
,3
]}

Seo, Hyo Jin ^{[2
,3
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China

[2] Pukyong Natl Univ, Dept Phys, Busan 608737, South Korea

[3] Pukyong Natl Univ, Interdisciplinary Program Biomed Engn, Busan 608737, South Korea

来源：

APPLIED SURFACE SCIENCE | 2019年 / 473卷

基金：

新加坡国家研究基金会;

关键词：

Photocatalysis; Semiconductor; Optical properties; Microstructures; VISIBLE-LIGHT; PHOTOCATALYTIC ACTIVITY; BI2O3; TIO2; LUMINESCENCE; DEGRADATION; NANOPARTICLES; PERFORMANCE; FABRICATION; MORPHOLOGY;

D O I：

10.1016/j.apsusc.2018.12.165

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：

Cs-doped alpha-Bi2O3 was synthesized via a facile hydrothermal reaction. The phase formations of the samples were investigated via X-ray powder diffraction (XRD) patterns and structural refinements. The samples present well-crystalized microplates with smooth surfaces and a thickness about 300 nm. The experiments revealed that the undoped and Cs-doped alpha-Bi2O3 microplates could crystallized in a pure monoclinic phase. The band gap of alpha-Bi2O3 could be reduced via the Cs-doping in the lattices. The photocatalytic activity on photo-degradation of methylene blue (MB) was significantly improved with the Cs-doping. The effective photocatalysis was discussed on the improved visible-light response, the enhanced dispersion in the valence band composed of hybrid orbitals of Bi6s, O2p and Cs3d, and the lowered electron-hole recombination.

引用

页码：401 / 408

页数：8

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