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Author:

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

Indexed by:

Scopus SCIE

Abstract:

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.

Keyword:

Degradation pathway Bisphenol A Optimization Bi2O3-TiO2 composites

Author Community:

  • [ 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

Reprint Author's Address:

  • 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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Source :

DESALINATION AND WATER TREATMENT

ISSN: 1944-3994

Year: 2019

Volume: 147

Page: 222-233

1 . 1 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:136

JCR Journal Grade:4

Cited Count:

WoS CC Cited Count: 5

SCOPUS Cited Count: 6

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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