Citation: Ge Jianhua, Zhang Long, Xu Jing, Liu Yujie, Jiang Daochuan, Du Pingwu. Nitrogen photofixation on holey g-C₃N₄ nanosheets with carbon vacancies under visible-light irradiation[J]. Chinese Chemical Letters, ;2020, 31(3): 792-796. doi: 10.1016/j.cclet.2019.05.030 shu

Nitrogen photofixation on holey g-C₃N₄ nanosheets with carbon vacancies under visible-light irradiation

Ge Jianhua ^a,b,*, ,
Zhang Long ^a ,
Xu Jing ^a ,
Liu Yujie ^a ,
Jiang Daochuan ^b ,
Du Pingwu ^b,*,

a.
School of Earth and Environment, Anhui University of Science & Technology, Huainan 232001, China
b.
CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials(iChEM), University of Science and Technology of China(USTC), Hefei 230026, China

jhge@aust.edu.cn

dupingwu@ustc.edu.cn

Received Date: 15 April 2019
Revised Date: 10 May 2019
Accepted Date: 13 May 2019
Available Online: 18 May 2019

Figures(4)

Nitrogen photofixation using g-C₃N₄-based photocatalysts have attracted abundant of attentions recently. Herein, in this study, holey g-C₃N₄ (HGCN) nanosheets possess a good deal of carbon vacancies were prepared by means of thermally treating bulk g-C₃N₄ (BGCN) under an NH₃ atmosphere. Characterization analysis revealed that the as-synthesized sample have identical crystal structure, larger BET specific surface area, stronger reduction capability, and higher photogenerated charge carrier separation rate than that of BGCN. These properties may contribute to enhance the nitrogen photofixation activity. It was also found that the rate of NH₄⁺ production for N₂ photofixation of HGCN sample reached~25.54 mg L^-1 h^-1 g_cat^-1, which is approximately~5.87 times higher than that of BGCN sample under optimal reactive conditions. Moreover, a plausible mechanism of HGCN for nitrogen photofixation process was illuminated in detail.
- Nitrogen photofixation,
- Carbon vacancies,
- g-C₃N₄,
- Nanosheets,
- Photocatalysis
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Nitrogen photofixation on holey g-C3N4 nanosheets with carbon vacancies under visible-light irradiation

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通讯作者: 陈斌, bchen63@163.com

Nitrogen photofixation on holey g-C₃N₄ nanosheets with carbon vacancies under visible-light irradiation