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

In Young Kim; Sungho Kim; Xiaoyan Jin; Selvarajan Premkumar; Goutam Chandra; Nam Suk Lee; Gurudas P. Mane; Seong Ju Hwang; Siva Umapathy; Ajayan Vinu

doi:10.1002/anie.201811061

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

In Young Kim, Sungho Kim, Xiaoyan Jin, Selvarajan Premkumar, Goutam Chandra, Nam Suk Lee, Gurudas P. Mane, Seong Ju Hwang, Siva Umapathy, Ajayan Vinu

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

110 Citations (Scopus)

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.

Original language	English
Pages (from-to)	17135-17140
Number of pages	6
Journal	Angewandte Chemie - International Edition
Volume	57
Issue number	52
DOIs	https://doi.org/10.1002/anie.201811061
Publication status	Published - 2018 Dec 21

Bibliographical note

Funding Information:
This work was supported by the program of the Discovery Early Career Researcher Award (DECRA) of the Australian Research Council (ARC) (grant number DE170101069). NEXAFS measurements were undertaken on the Soft X-ray Beamline at Australian Synchrotron. We acknowledge Mr. Peng Tan (Nanjing University) for his support to draw the schematic model of synthetic procedure.

Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)

Access to Document

10.1002/anie.201811061

Cite this

Kim, I. Y., Kim, S., Jin, X., Premkumar, S., Chandra, G., Lee, N. S., Mane, G. P., Hwang, S. J., Umapathy, S., & Vinu, A. (2018). Ordered Mesoporous C₃N₅ with a Combined Triazole and Triazine Framework and Its Graphene Hybrids for the Oxygen Reduction Reaction (ORR). Angewandte Chemie - International Edition, 57(52), 17135-17140. https://doi.org/10.1002/anie.201811061

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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.",

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