Citation: Kai Zhu, Jie Ou-Yang, Qian Zeng, Sugang Meng, Wei Teng, Yanhua Song, Sheng Tang, Yanjuan Cui. Fabrication of hierarchical ZnIn₂S₄@CNO nanosheets for photocatalytic hydrogen production and CO₂ photoreduction[J]. Chinese Journal of Catalysis, ;2020, 41(3): 454-463. doi: S1872-2067(19)63494-7 shu

Fabrication of hierarchical ZnIn₂S₄@CNO nanosheets for photocatalytic hydrogen production and CO₂ photoreduction

Kai Zhu ^a, ,
Jie Ou-Yang ^a ,
Qian Zeng ^a ,
Sugang Meng ^a ,
Wei Teng ^b ,
Yanhua Song ^a ,
Sheng Tang ^a ,
Yanjuan Cui ^a

a School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China;
b College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui, China

Received Date: 18 July 2019
Revised Date: 4 September 2019

Fund Project: This work was supported by the National Natural Science Foundation of China (21503096, 21407067), the Natural Science Foundation of Educational Committee of Anhui Province (KJ2018A0387), China, and Project of Anhui Province for Excellent Young Talents in Universities (gxyq2019029), China.

Photocatalytic H₂ production and CO₂ reduction have attracted considerable attention for clean energy development. In this work, we designed an efficient photocatalyst by integrating lamellar oxygen-doped carbon nitride (CNO) nanosheets into ZnIn₂S₄ (ZIS) microflowers by a one-step hydrothermal method. A well-fitted 2D hierarchical hybrid heterostructure was fabricated. Under visible light irradiation, the ZIS@CNO composite with 40 wt% CNO (ZC 40%) showed the highest hydrogen evolution rate from water (188.4 μmol·h^-1), which was approximately 2.1 times higher than those of CNO and ZIS (88.6 and 90.2 μmol·h^-1, respectively). Furthermore, the selective CO production rates of ZC 40% (12.69 μmol·h^-1) were 2.2 and 14.0 times higher than those of ZIS (5.85 μmol·h^-1) and CNO (0.91 μmol·h^-1), respectively, and the CH₄ production rate of ZC 40% was 1.18 μmol·h^-1. This enhanced photocatalytic activity of CNO@ZIS is due mainly to the formation of a heterostructure that can promote the transfer of photoinduced electrons and holes between CNO and ZIS, thereby efficiently avoiding recombination of electron-hole pairs.
- ZnIn₂S₄,
- Oxygen doped carbon nitride,
- Photocatalysis,
- H₂ production,
- CO₂ reduction
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Fabrication of hierarchical ZnIn₂S₄@CNO nanosheets for photocatalytic hydrogen production and CO₂ photoreduction