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[期刊论文]

Enhancement of photocatalytic activities in hierarchical BiOBr microflowers induced by oxygen vacancies

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author:

Song, M. (Song, M..) [1] | Du, M. (Du, M..) [2] | Liu, Q. (Liu, Q..) [3] | Unfold

Indexed by:

Scopus

Abstract:

Bismuth oxyhalides have attracted more and more attention as promising photocatalysts. Oxygen vacancies on the surface of BiOBr play an important role in enhancing photocatalytic activity. In this paper, we present a facile method to prepare hierarchical BiOBr microflowers with surface oxygen vacancies by the solvothermal synthesis route in the presence of urea. The content of oxygen vacancies on the surface of hierarchical BiOBr microflowers can be tuned by the amount of urea used in the synthesis process. Moreover, it was found that hierarchical BiOBr microflowers with oxygen vacancies exhibited much better photocatalytic activity for photocatalytic degradation of Rhodamine B than the BiOBr without oxygen vacancies. Furthermore, experimental results revealed that oxygen vacancies can promote effective separation and transport of photo-generated charges, which is beneficial for photocatalytic performance of BiOBr. This study establishes an in-depth understanding of defective oxygen vacancies structures in Bismuth oxyhalides based photocatalysts. © 2018 Elsevier B.V.

Keyword:

BiOBr; Micorflowers; Oxygen vacancies; Photocatalysis; Photogenerated carriers

Community:

  • [ 1 ] [Song, M.]Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China
  • [ 2 ] [Du, M.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 3 ] [Liu, Q.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 4 ] [Xing, F.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 5 ] [Huang, C.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 6 ] [Qiu, X.]College of Chemistry and Chemical Engineering, Central South University, Changsha, 41083, China

Reprint 's Address:

  • [Qiu, X.]College of Chemistry and Chemical Engineering, Central South UniversityChina

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Source :

Catalysis Today

ISSN: 0920-5861

Year: 2019

Volume: 335

Page: 193-199

5 . 8 2 5

JCR@2019

5 . 2 0 0

JCR@2023

ESI HC Threshold:184

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 63

30 Days PV: 0

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