A Novel Preparation of Bi2O3 and Their Potent Photocatalytic Activity Under Visible-Light Irradiation

被引：0

作者：

Jun, C. ^{[1
]}

Jing, Z. ^{[1
]}

Qihou, L. ^{[1
]}

Yumeng, Z. ^{[2
]}

Hui, L. ^{[1
]}

机构：

[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China

[2] Xiangtan Univ, Coll Environm & Resources, Xiangtan 411104, Peoples R China

来源：

ENERGY TECHNOLOGY 2018: CARBON DIOXIDE MANAGEMENT AND OTHER TECHNOLOGIES | 2018年

关键词：

B-Bi2O3; A-Bi2O3; Delta-Bi2O3; Photocatalysts; Degradation; OXIDE; DEGRADATION; DEPOSITION; ORANGE;

D O I：

10.1007/978-3-319-72362-4_16

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Three phases of Bi2O3 were first synthesized by extraction-stripping-precipitation and post decomposition from BiCl3 leaching solution. The as-prepared Bi2O3 were characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectra (FT-IR), scanning and transmission electron microscopy (SEM, TEM), UV-vis diffuse reflectance spectroscopy (UV-vis DRS), Brunauer-Emmett-Teller (BET) and X-ray photoelectron spectroscopy (XPS). The photocatalytic performances of the oxides were investigated by decomposing rhodamine B (RB) under visible irradiation. It shows that the Bi2O3 with different crystal structures and morphology were obtained under different decomposition temperature. The band gaps of as-prepared samples were 2.36, 2.41, and 2.78 eV for beta-Bi2O3, alpha-Bi2O3, and delta-Bi2O3, respectively, and the photocatalytic activities followed the order: beta-Bi2O3 > alpha-Bi2O3 > delta-Bi2O3, which was in good accordance with the photoluminescence spectra measurement results. The beta-Bi2O3 exhibited the best photocatalytic performance which can effectively degrade 99.23% RB within 240 min.

引用

页码：191 / 204

页数：14

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