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Journal of Materials Science
Erschienen in: Journal of Materials Science 2/2019

18.09.2018 | Energy materials

Synergistic effects of phosphorous/sulfur co-doping and morphological regulation for enhanced photocatalytic performance of graphitic carbon nitride nanosheets

verfasst von: Xiaoxue Han, Aili Yuan, Chengkai Yao, Fengna Xi, Jiyang Liu, Xiaoping Dong

Erschienen in: Journal of Materials Science | Ausgabe 2/2019

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Abstract

Graphitic carbon nitride (g-C3N4) as a metal-free polymer semiconductor has received extensive attentions, but its application was drastically suppressed due to low photocatalytic activity. Herein, non-metal heteroatom co-doping is employed to extend the visible light absorption, and regulating morphology into nanosheets promotes the charge separation and transfer. Elements of P/S were successfully introduced into the carbon nitride framework by thermal condensation of their corresponding precursors with melamine. And, the presence of NH4Cl would produce abundant gas to blow CN layers separately to form thin nanosheets. The obtained P/S co-doped carbon nitride nanosheet (g-PSCNNS) sample presents enhanced absorption in visible light region and efficiencies for separation and transport of photo-generated charges. The synergistic effect of elemental co-doping and nanosheet-like morphology endues g-PSCNNS with superior photocatalytic performance for removal of organic pollutants in comparison with the pristine, P or S individual doped and P/S co-doped g-C3N4 samples. Moreover, this g-PSCNNS sample has excellent photocatalytic stability and reusability. Experiments of radical quenching demonstrate superoxide radical is the main active species in the photocatalytic process.
Vorheriger Artikel Design of high specific surface area N-doped carbon aerogels via a microwave reduction method
Nächster Artikel A highly pyridinic N-doped carbon from macroalgae with multifunctional use toward CO2 capture and electrochemical applications

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Metadaten
Titel
Synergistic effects of phosphorous/sulfur co-doping and morphological regulation for enhanced photocatalytic performance of graphitic carbon nitride nanosheets
verfasst von
Xiaoxue Han
Aili Yuan
Chengkai Yao
Fengna Xi
Jiyang Liu
Xiaoping Dong
Publikationsdatum
18.09.2018
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 2/2019
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-018-2925-9

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