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作者:

Wang, Nan (Wang, Nan.) | Li, Xing (Li, Xing.) (学者:李星) | Yang, Yanling (Yang, Yanling.) (学者:杨艳玲) | Guo, Tingting (Guo, Tingting.) | Zhuang, Xiaoxuan (Zhuang, Xiaoxuan.) | Ji, Siyang (Ji, Siyang.) | Zhang, Tingting (Zhang, Tingting.) | Zhou, Zhiwei (Zhou, Zhiwei.) (学者:周志伟)

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Scopus SCIE

摘要:

A series of Bi-Ti composited photocatalysts with different molar ratio of Bi/Ti (0.01:1(1%), 0.02:1(2%), 0.04:1(4%), and 0.05:1(5%)) and calcination temperature (400 degrees C, 500 degrees C, and 600 degrees C) were prepared by sol-hydrothermal method. The properties of as-prepared photocatalysts were characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photo-electron spectroscopy, Brunauer-Emmett-Teller, and ultraviolet-visible diffuse reflection spectroscopy. The selected photocatalyst (Bi-Ti-4%-600 degrees C) was prepared under Bi/Ti molar ratio of 4% and calcination temperature of 600 degrees C. Experimental variables during photocatalytic degradation were optimized for catalyst dosage, solution pH, initial bisphenol A (BPA) concentration, coexisting anions, and light source wavelength. Under optimal conditions of 1.0 g L-1 catalyst, pH 3, 30 mg L-1 initial BPA concentration, the degradation rate of BPA could reach up to 100% at 150 min under visible light irradiation. Compared with self-made pure TiO2 and commercially available P-25, Bi-Ti-4%-600 degrees C displayed an excellent photocatalytic activity for BPA degradation. Bi-Ti photocatalyst had a smaller crystal size, larger specific surface area, stronger visible light absorption ability, and lower band gap energy than self-made pure TiO2. Four intermediates of BPA degradation were identified and a possible degradation pathway was proposed.

关键词:

Degradation pathway Bisphenol A Optimization Bi2O3-TiO2 composites

作者机构:

  • [ 1 ] [Wang, Nan]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Li, Xing]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Yang, Yanling]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Guo, Tingting]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 5 ] [Zhuang, Xiaoxuan]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 6 ] [Ji, Siyang]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 7 ] [Zhang, Tingting]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 8 ] [Zhou, Zhiwei]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China

通讯作者信息:

  • 李星 周志伟

    [Li, Xing]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China;;[Zhou, Zhiwei]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China

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来源 :

DESALINATION AND WATER TREATMENT

ISSN: 1944-3994

年份: 2019

卷: 147

页码: 222-233

1 . 1 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:136

JCR分区:4

被引次数:

WoS核心集被引频次: 5

SCOPUS被引频次: 6

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

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