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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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 |
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Publication: | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION |
Publisher: | WILEY-V C H VERLAG GMBH |
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 |
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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