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author:

Liu, Miaomiao (Liu, Miaomiao.) [1] | Liu, Gang (Liu, Gang.) [2] | Liu, Xinmei (Liu, Xinmei.) [3] | Wang, Xiaoyi (Wang, Xiaoyi.) [4] | Chen, YunLong (Chen, YunLong.) [5] | Yang, Wenlong (Yang, Wenlong.) [6] | Gao, Chunpeng (Gao, Chunpeng.) [7] | Wang, Guanxiang (Wang, Guanxiang.) [8] | Teng, Zhengchun (Teng, Zhengchun.) [9]

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EI

Abstract:

Developing efficient photocatalysts is critical for degradation of organic pollutants. Herein, a highly efficient heterojunction photocatalyst (m-Bi2O4/Bi2O4−x/BiOCl) was synthesized by a hydrothermal method. Through changing the added volume of concentrated HCl acid, the ternary composite based on BiOCl nanosheets matrix on which the m-Bi2O4 micro-rods and the Bi2O4−x nanospheres are firmly attached. The prepared m-Bi2O4/Bi2O4−x/BiOCl showed a favorable degradation rate and mineralization ability towards Bisphenol A (BPA) and Ciprofloxacin (CIP) under visible light irradiation, which degraded 98.3% of BPA in 30 min, 82.3% of CIP in 80 min, and the rate constants were around 30.16 and 2.82 times higher than that of pure BiOCl, respectively. This enhanced photocatalytic activity of m-Bi2O4/Bi2O4−x/BiOCl composite can be originated from the improved light adsorption range and the synergistic effect of type-II and the Z-scheme charge transfer on the interfaces of m-Bi2O4, Bi2O4−x and BiOCl, which then lead to an accelerated separation and migration of photo-generated carriers. Meanwhile, the photoluminescence (PL) test and photoelectrochemistry (PEC) test provided strong evidence for the construction of the heterojunction. Moreover, the repeatability of m-Bi2O4/Bi2O4−x/BiOCl heterojunction photocatalyst was also investigated, and it still remained 90% photocatalytic activity after four successive cycles. This work proposed a possible photocatalytic pathway for m-Bi2O4/Bi2O4−x/BiOCl, which would open up a new avenue for water environment treatment utilizing ternary photocatalysts. © 2022 Elsevier B.V.

Keyword:

Bismuth compounds Charge transfer Chlorine compounds Complexation Heterojunctions Image enhancement Light Organic pollutants Photocatalytic activity Photodegradation Rate constants Water treatment

Community:

  • [ 1 ] [Liu, Miaomiao]Harbin University of Science and Technology, Harbin; 150001, China
  • [ 2 ] [Liu, Gang]Harbin University of Science and Technology, Harbin; 150001, China
  • [ 3 ] [Liu, Xinmei]Harbin University of Science and Technology, Harbin; 150001, China
  • [ 4 ] [Wang, Xiaoyi]Fuzhou University, Fuzhou; 350100, China
  • [ 5 ] [Chen, YunLong]Harbin University of Science and Technology, Harbin; 150001, China
  • [ 6 ] [Yang, Wenlong]Harbin University of Science and Technology, Harbin; 150001, China
  • [ 7 ] [Gao, Chunpeng]Harbin University of Science and Technology, Harbin; 150001, China
  • [ 8 ] [Wang, Guanxiang]Harbin University of Science and Technology, Harbin; 150001, China
  • [ 9 ] [Teng, Zhengchun]Harbin University of Science and Technology, Harbin; 150001, China

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Source :

Colloids and Surfaces A: Physicochemical and Engineering Aspects

ISSN: 0927-7757

Year: 2022

Volume: 643

5 . 2

JCR@2022

4 . 9 0 0

JCR@2023

ESI HC Threshold:74

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 9

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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