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Issue 46, 2015
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Selective photocatalytic N2 fixation dependent on g-C3N4 induced by nitrogen vacancies†

Guohui Dong,*a   Wingkei Hob  and  Chuanyi Wang*a  
Author affiliations

* Corresponding authors

a Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
E-mail: donggh@ms.xjb.ac.cn
Tel: +86-15199153105

b Department of Science and Environmental Studies, Centre for Education in Environmental Sustainability, The Hong Kong Institute of Education, Tai Po, N.T. Hong Kong, People's Republic of China

Abstract

Photoreduction of N2 is among the most interesting and challenging methods for N2 fixation under mild conditions. In this study, we determined that nitrogen vacancies (NVs) could endow graphitic carbon nitride (g-C3N4) with the photocatalytic N2 fixation ability. Photocatalytic N2 fixation induced by NVs is free from the interference of other gases. The reason is that NVs could selectively adsorb and activate N2 because NVs have the same shape and size as the nitrogen atom in N2. In addition to this, NVs could also improve many other properties of g-C3N4 to support photocatalytic N2 fixation. These new findings could elucidate the design of efficient photocatalysts for photocatalytic N2 fixation.

Graphical abstract: Selective photocatalytic N2 fixation dependent on g-C3N4 induced by nitrogen vacancies

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Article information

https://doi.org/10.1039/C5TA06540B
Submitted
19 Aug 2015
Accepted
12 Oct 2015
First published
14 Oct 2015
J. Mater. Chem. A, 2015,3, 23435-23441
Article type
Paper
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Selective photocatalytic N2 fixation dependent on g-C3N4 induced by nitrogen vacancies

G. Dong, W. Ho and C. Wang, J. Mater. Chem. A, 2015, 3, 23435
DOI: 10.1039/C5TA06540B

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