Diaminotetrazine based mesoporous C3N6 with a well-ordered 3D cubic structure and its excellent photocatalytic performance for hydrogen evolution
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Date
2017
Authors
Talapaneni, S.N.
Mane, G.P.
Park, D.H.
Lakhi, K.S.
Ramadass, K.
Joseph, S.
Skinner, W.M.
Ravon, U.
Al Bahily, K.
Vinu, A.
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Journal article
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Journal of Materials Chemistry A, 2017; 5(34):18183-18192
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Abstract
Novel nitrogen enriched diamino-s-tetrazine based highly ordered 3D mesoporous carbon nitride (MCN-9) hybrid materials with a body centered cubic Ia3d structure having high specific surface areas, large pore volumes, and tunable pore diameters were prepared by employing 3D body centered cubic KIT-6 mesoporous silica having a gyroidal porous structure and various pore diameters as the sacrificial hard template through a simple self-condensation followed by polymerization reaction of aminoguanidine hydrochloride inside the nanochannels of the KIT-6 template. Characterization results reveal that the prepared materials exhibit a 3D porous structure with well-defined mesopores and possess excellent physical parameters including high surface areas (157-346 m 2 g -1 ), large pore volumes (0.36-0.63 cm 3 g -1 ), different pore diameters (5.5-6.0 nm) and a high N/C ratio of 1.87, which is much higher than that of ideal C 3 N 4 (1.33). The deep yellow colored MCN-9 with a 3D porous structure also shows good absorption properties with a tunable narrow bandgap of 2.25-2.5 eV, which is again much lower than that of C 3 N 4 (2.7 eV) and helps to achieve much higher photocatalytic water splitting activity than non-porous C 3 N 4 and other carbon nitrides under visible light irradiation.
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Data source: Supplementary information, https://doi.org/10.1039/c7ta04041e
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Copyright 2017 The Royal Society of Chemistry. This open access article is licensed under a Creative Commons Attribution 3.0 Unported Licence (http://creativecommons.org/licenses/by/3.0/)