Using transition metal-based deep eutectic solvents to synthesize transition metal-doped carbon nitrides for photo-Fenton degradation of organic dyes and antibiotics

[Display omitted] •Deep eutectic solvents are used to prepare transition metal doped g-C3N4 composite.•The ionothermal conditions promote the doping of transition metal ions in g-C3N4.•Co1.2Fe1.2-CN displays high photo-Fenton activity for degrading organic pollutants. Transition metal doped g-C3N4 c...

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Veröffentlicht in:Applied surface science 2022-09, Vol.597, p.153718, Article 153718
Hauptverfasser: Wang, Ning, Xu, Qi, Yu, Jiming, Jia, Shanqing, Zhai, Longfei, Yang, Ting, Yang, Chuang, Zheng, Bing, Xiong, Wei-Wei
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Sprache:eng
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Zusammenfassung:[Display omitted] •Deep eutectic solvents are used to prepare transition metal doped g-C3N4 composite.•The ionothermal conditions promote the doping of transition metal ions in g-C3N4.•Co1.2Fe1.2-CN displays high photo-Fenton activity for degrading organic pollutants. Transition metal doped g-C3N4 composites have been proved as promising photo-Fenton catalysts for degrading organic pollutants. The efficient coordination between transition metal ions and nitrogen atoms is crucial to the preparation of transition metal doped g-C3N4 composites. However, it is a challenge to ensure the high coordination efficiency of transition metal ions in g-C3N4. In this work, two series of monometallic doped Cox-g-C3N4 and bimetallic doped Co1.2Fey-g-C3N4 composites were synthesized by employing two transition metal-based deep eutectic solvents (DESs) as reaction media. The mild ionothermal conditions provided a favorable environment for doping transition metal ions in g-C3N4. After annealing these composites, the as-formed Cox-CN and Co1.2Fey-CN composites displayed excellent photo-Fenton activities for degrading organic dyes and antibiotics. Moreover, compared with Cox-CN, Co1.2Fey-CN exhibited enhanced photo-Fenton activities. This research might offer a new approach for preparing transition metal doped g-C3N4 composites in DESs.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2022.153718