Citation: Mingchuan Yu, Huanjing Liang, Ruonan Zhan, Lei Xu, Junfeng Niu. Sm-doped g-C₃N₄/Ti₃C₂ MXene heterojunction for visible-light photocatalytic degradation of ciprofloxacin[J]. Chinese Chemical Letters, ;2021, 32(7): 2155-2158. doi: 10.1016/j.cclet.2020.11.069 shu

Sm-doped g-C₃N₄/Ti₃C₂ MXene heterojunction for visible-light photocatalytic degradation of ciprofloxacin

Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China

niujf@dgut.edu.cn

Received Date: 10 October 2020
Revised Date: 4 November 2020
Accepted Date: 30 November 2020
Available Online: 4 December 2020

Figures(4)

A heterojunction of Sm-doped g-C₃N₄/Ti₃C₂ MXene (SCN/MX) was constructed via prepolymerization and solid mixture-calcination method. The modified g-C₃N₄ presented a hollow porous seaweed-like shape which can increase its specific area and active sites. In SCN/MX composite, the optical properties, no matter optical absorption ability or separation performance of photo-induced electrons and holes, were enhanced. Among them, Sm-doping may play an important role on transferring the photogenerated electrons to suppress their recombination, and Ti₃C₂ MXene would broaden light absorption and further improve the carrier migration efficiency. The SCN/MX presented higher photocatalytic degradation efficiency (> 99%) of ciprofloxacin under visible light irradiation. The quenching experiments and electron spin-resonance spectroscopy confirmed that the dominated active materials were superoxide radical and holes. The degradation mechanisms of ciprofloxacin (CIP) over the SCN/MX were attacking of the active materials on the piperazine ring and quinolone ring, and the final products were CO₂, H₂O and F⁻.
- Sm-doped,
- Visible light photodegradation
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Sm-doped g-C3N4/Ti3C2 MXene heterojunction for visible-light photocatalytic degradation of ciprofloxacin

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通讯作者: 陈斌, bchen63@163.com

Sm-doped g-C₃N₄/Ti₃C₂ MXene heterojunction for visible-light photocatalytic degradation of ciprofloxacin