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Ordered Mesoporous C3N5 with a Combined Triazole and Triazine Framework and Its Graphene Hybrids for the Oxygen Reduction Reaction (ORR)

Kim, Young In and Kim, Sungho and Jin, Xiaoyan and Premkumar, Selvarajan and Chandra, Goutam and Lee, Nam-Suk and Mane, Gurudas P and Hwang, Seong-Ju and Umapathy, Siva and Vinu, Ajayan (2018) Ordered Mesoporous C3N5 with a Combined Triazole and Triazine Framework and Its Graphene Hybrids for the Oxygen Reduction Reaction (ORR). In: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 57 (52). pp. 17135-17140.

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Official URL: https://doi.org/10.1002/anie.201811061

Abstract

Mesoporous carbon nitrides (MCN) with C3N4 stoichiometry could find applications in fields ranging from catalysis, sensing, and adsorption-separation to biotechnology. The extension of the synthesis of MCN with different nitrogen contents and chemical structures promises access to a wider range of applications. Herein we prepare mesoporous C3N5 with a combined triazole and triazine framework via a simple self-assembly of 5-amino-1H-tetrazole (5-ATTZ). We are able to hybridize these nanostructures with graphene by using graphene-mesoporous-silica hybrids as a template to tune the electronic properties. DFT calculations and spectroscopic analyses clearly demonstrate that the C3N5 consists of 1 triazole and 2 triazine moieties. The triazole-based mesoporous C3N5 and its graphene hybrids are found to be highly active for oxygen reduction reaction (ORR) with a higher diffusion-limiting current density and a decreased overpotential than those of bulk g-C3N4.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to WILEY-V C H VERLAG GMBH
Keywords: electrocatalysts; N-rich carbon nitrides; oxygen reduction reaction; porous materials; triazoles
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Depositing User: Id for Latest eprints
Date Deposited: 29 Jan 2019 09:02
Last Modified: 29 Jan 2019 09:02
URI: http://eprints.iisc.ac.in/id/eprint/61540

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