Citation: Zhiyuan Pang, Bin Wang, Xingwang Yan, Chongtai Wang, Sheng Yin, Huaming Li, Jiexiang Xia. CdBiO₂Br nanosheets in situ strong coupling to carbonized polymer dots and improved photocatalytic activity for organic pollutants degradation[J]. Chinese Chemical Letters, ;2022, 33(12): 5189-5195. doi: 10.1016/j.cclet.2022.01.054 shu

CdBiO₂Br nanosheets in situ strong coupling to carbonized polymer dots and improved photocatalytic activity for organic pollutants degradation

Zhiyuan Pang ^a ,
Bin Wang ^a ,
Xingwang Yan ^a ,
Chongtai Wang ^b ,
Sheng Yin ^a ,
Huaming Li ^a ,
Jiexiang Xia ^{a, *,}

a.
School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
b.
School of Chemistry and Chemical Engineering, the Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province, Hainan Normal University, Haikou 571158, China

xjx@ujs.edu.cn

Received Date: 5 October 2021
Revised Date: 30 November 2021
Accepted Date: 20 January 2022
Available Online: 24 January 2022

Figures(5)

Carbonized polymer dots (CPDs) modified layer-structured CdBiO₂Br (CPDs/CdBiO₂Br) Z-scheme heterojunction hybrid material has been synthesized via simple solvothermal method. The hybrid material with Z-scheme heterojunction can effectively maintain the original highly oxidizing holes of CdBiO₂Br and the highly reducing electrons of CPDs. In addition, the construction of heterostructure is beneficial to the migration and separation of photogenerated carriers. Under visible light irradiation, 6 wt% CPDs/CdBiO₂Br showed the best catalytic activity for degradation of organic pollutants. Free radical capture experiments and ESR analysis confirmed that the main active species are ^•O₂⁻ and h⁺. The decomposition process of organic pollutants was analyzed by LC-MS. Finally, the probable visible light mechanism performance of CPDs/CdBiO₂Br as direct Z-scheme heterojunction photocatalytic materials was proposed.
- Carbonized polymer dots,
- CdBiO₂Br,
- Direct Z-scheme heterojunction,
- Pollutant degradation,
- Photocatalytic activity
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CdBiO₂Br nanosheets in situ strong coupling to carbonized polymer dots and improved photocatalytic activity for organic pollutants degradation