BiOBr/BiOCl/carbon quantum dot microspheres with superior visible light-driven photocatalysis

Chenhui Zhao; Ying Liang; Wei Li; Yi Tian; Xin Chen; Dezhong Yin; Qiuyu Zhang

doi:10.1039/c7ra10344a

BiOBr/BiOCl/carbon quantum dot microspheres with superior visible light-driven photocatalysis

Chenhui Zhao, Ying Liang, Wei Li, Yi Tian, Xin Chen, Dezhong Yin, Qiuyu Zhang

School of Chemistry and Chemical Engineering

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

In this paper, BiOBr/BiOCl/CQDs heterostructure microspheres were successfully synthesized via a facile solvothermal method. Then, the structures, morphologies, optical properties and photocatalytic performances were investigated. This research showed that the BiOBr/BiOCl/CQDs microspheres exhibited significantly enhanced photocatalytic performance compared with BiOBr/BiOCl. In the photocatalysis process of rhodamine B (RhB) under visible light irradiation, the highest photodegradation rate (0.0609 min^-1) would be obtained when the weight percentage of CQDs was appropriate, which was about 2.8 times higher than that of BiOBr/BiOCl (0.0217 min^-1). In this photocatalytic system, the enhanced photoactivity was mainly attributed to the heterojunction interface among CQDs, BiOBr and BiOCl, and enhanced light harvesting for the appropriate CQD introduction. The radical trapping experiments revealed that O₂^-, e^- and h⁺ were the main active species during the photocatalysis process.

Original language	English
Pages (from-to)	52614-52620
Number of pages	7
Journal	RSC Advances
Volume	7
Issue number	83
DOIs	https://doi.org/10.1039/c7ra10344a
State	Published - 2017

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title = "BiOBr/BiOCl/carbon quantum dot microspheres with superior visible light-driven photocatalysis",

abstract = "In this paper, BiOBr/BiOCl/CQDs heterostructure microspheres were successfully synthesized via a facile solvothermal method. Then, the structures, morphologies, optical properties and photocatalytic performances were investigated. This research showed that the BiOBr/BiOCl/CQDs microspheres exhibited significantly enhanced photocatalytic performance compared with BiOBr/BiOCl. In the photocatalysis process of rhodamine B (RhB) under visible light irradiation, the highest photodegradation rate (0.0609 min-1) would be obtained when the weight percentage of CQDs was appropriate, which was about 2.8 times higher than that of BiOBr/BiOCl (0.0217 min-1). In this photocatalytic system, the enhanced photoactivity was mainly attributed to the heterojunction interface among CQDs, BiOBr and BiOCl, and enhanced light harvesting for the appropriate CQD introduction. The radical trapping experiments revealed that O2-, e- and h+ were the main active species during the photocatalysis process.",

author = "Chenhui Zhao and Ying Liang and Wei Li and Yi Tian and Xin Chen and Dezhong Yin and Qiuyu Zhang",

note = "Publisher Copyright: {\textcopyright} 2017 The Royal Society of Chemistry.",

year = "2017",

doi = "10.1039/c7ra10344a",

language = "英语",

volume = "7",

pages = "52614--52620",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - BiOBr/BiOCl/carbon quantum dot microspheres with superior visible light-driven photocatalysis

AU - Zhao, Chenhui

AU - Liang, Ying

AU - Li, Wei

AU - Tian, Yi

AU - Chen, Xin

AU - Yin, Dezhong

AU - Zhang, Qiuyu

PY - 2017

Y1 - 2017

N2 - In this paper, BiOBr/BiOCl/CQDs heterostructure microspheres were successfully synthesized via a facile solvothermal method. Then, the structures, morphologies, optical properties and photocatalytic performances were investigated. This research showed that the BiOBr/BiOCl/CQDs microspheres exhibited significantly enhanced photocatalytic performance compared with BiOBr/BiOCl. In the photocatalysis process of rhodamine B (RhB) under visible light irradiation, the highest photodegradation rate (0.0609 min-1) would be obtained when the weight percentage of CQDs was appropriate, which was about 2.8 times higher than that of BiOBr/BiOCl (0.0217 min-1). In this photocatalytic system, the enhanced photoactivity was mainly attributed to the heterojunction interface among CQDs, BiOBr and BiOCl, and enhanced light harvesting for the appropriate CQD introduction. The radical trapping experiments revealed that O2-, e- and h+ were the main active species during the photocatalysis process.

AB - In this paper, BiOBr/BiOCl/CQDs heterostructure microspheres were successfully synthesized via a facile solvothermal method. Then, the structures, morphologies, optical properties and photocatalytic performances were investigated. This research showed that the BiOBr/BiOCl/CQDs microspheres exhibited significantly enhanced photocatalytic performance compared with BiOBr/BiOCl. In the photocatalysis process of rhodamine B (RhB) under visible light irradiation, the highest photodegradation rate (0.0609 min-1) would be obtained when the weight percentage of CQDs was appropriate, which was about 2.8 times higher than that of BiOBr/BiOCl (0.0217 min-1). In this photocatalytic system, the enhanced photoactivity was mainly attributed to the heterojunction interface among CQDs, BiOBr and BiOCl, and enhanced light harvesting for the appropriate CQD introduction. The radical trapping experiments revealed that O2-, e- and h+ were the main active species during the photocatalysis process.

UR - http://www.scopus.com/inward/record.url?scp=85034581600&partnerID=8YFLogxK

U2 - 10.1039/c7ra10344a

DO - 10.1039/c7ra10344a

M3 - 文章

AN - SCOPUS:85034581600

SN - 2046-2069

VL - 7

SP - 52614

EP - 52620

JO - RSC Advances

JF - RSC Advances

IS - 83

ER -

BiOBr/BiOCl/carbon quantum dot microspheres with superior visible light-driven photocatalysis

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