Citation: Hongpeng Li, Qi Qing, Liyuan Zheng, Lan Xie, Zhiqiang Gan, Liqin Huang, Shuang Liu, Zhe Wang, Yuexiang Lu, Jing Chen. Carbon dots and carbon nitride composite for photocatalytic removal of uranium under air atmosphere[J]. Chinese Chemical Letters, ;2022, 33(7): 3573-3576. doi: 10.1016/j.cclet.2022.01.050 shu

Carbon dots and carbon nitride composite for photocatalytic removal of uranium under air atmosphere

Hongpeng Li ^{a, 1} ,
Qi Qing ^{a, 1} ,
Liyuan Zheng ^b ,
Lan Xie ^b ,
Zhiqiang Gan ^b ,
Liqin Huang ^a ,
Shuang Liu ^a ,
Zhe Wang ^{b, *,} ,
Yuexiang Lu ^{a, *,} ,
Jing Chen ^a

a.
Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
b.
The MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China

wangzhe@ncepu.edu.cn

luyuexiang@mail.tsinghua.edu.cn

Received Date: 22 November 2021
Revised Date: 16 January 2022
Accepted Date: 18 January 2022
Available Online: 23 January 2022

Figures(4)

Photocatalytic removal of uranium has attracted much attention in nuclear wastewater treatment and it is highly needed to develop functional photocatalyst with excellent removal performance. In this work, seven kinds of carbon dots/carbon nitride (CDs/CN) composites were synthesized and SerCDs/CN with the best photo-assisted uranium removal performance was screened out. It was found that the introduction of CDs could bring in higher photocurrent density, lower interfacial charge transfer impedance and narrower band gap, resulting in a much-improved removal performance. SerCDs/CN had shown a removal capacity as high as 1690 mg/g and the reaction could be operated under air atmosphere which is promising in real application.
- Carbon dots,
- Carbon nitride,
- Uranium,
- Photocatalyst,
- Air atmosphere
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