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 |
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Sprache: | eng |
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•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. |
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ISSN: | 0169-4332 1873-5584 |
DOI: | 10.1016/j.apsusc.2022.153718 |