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Supporting Information

Construction 0D/2D heterojunction by highly dispersed Ag2S quantum dots (QDs) loaded on the g-C3N4 nanosheets for photocatalytic hydrogen evolution

Ziyi You,ab Xiaoyang Yue,a Dainan Zhang,a Jiajie Fan,c and Quanjun Xiangab*

a State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China, E-mail: xiangqj@uestc.edu.cn

b Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, P. R. China.

c School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China.

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Fig. S1. Schematic illustration for the preparation of Ag2S QDs/g-C3N4 composite photocatalyst.

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Fig. S2. Band gap values of Ag2S quantum dots (QDs).

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Fig. S3. Band gap values of Ag2S QDs/g-C3N4 composites containing different amounts of Ag2S QDs (0, 0.2, 0.5, 1.0, and 3.0 wt%).

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Fig. S4. XPS survey spectra of Ag2S QDs/g-C3N4 composites (1.0 wt%).

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Fig. S5. The elemental mapping of Ag2S NPs/g-C3N4 (3.0 wt%).

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Fig. S6. UV-vis light absorption spectra of Ag2S NPs/g-C3N4 composites containing different amounts of Ag2S NPs (0.5, 1.0, 3.0, 6.0 and 10.0 wt%).

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Fig. S7. Photocatalytic H2 evolution rate of Ag2S NPs/g-C3N4 composites co 内容过长，仅展示头部和尾部部分文字预览，全文请查看图片预览。 lution, J. Photoch. Photobio. A 415 (2021) 113305.

[11] H. Liu, J. Liang, S. Fu, L. Li, J. Cui, P. Gao, F. Zhao, J. Zhou, N doped carbon quantum dots modified defect-rich g-C3N4 for enhanced photocatalytic combined pollutions degradation and hydrogen evolution, Colloids Surf. A 591 (2020) 124552.

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