Abstract
Nanostructured semiconductor composites are often considered as types of promising photocatalysts and display great prospects in visible light photocatalytic hydrogen production. In this work, nanostructured Pt-on-Au/PCN composites were synthesized by photo-induced synthesis strategy with exfoliated g-C3N4 (PCN) nanosheets as starting materials and served in visible light photocatalytic hydrogen production. The prepared Pt-on-Au/PCN composites showed enhanced visible light absorption and photocatalytic hydrogen production performance. The visible light photocatalytic performance of Pt-on-Au/PCN composites is approximately 54.60 times of pristine g-C3N4 and 3.61 times of Pt/g-C3N4 composites, respectively. These findings could be mainly attributed to the formation of bimetal Pt-on-Au nanostructure for visible light harvesting and charge separation. Besides, possible photocatalytic mechanism of nanostructured Pt-on-Au/PCN composites for hydrogen production is proposed in detail. Current work also offers a new method to design and synthesize other types of metal-on-metal nanostructures for efficient semiconductor photocatalysis.
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Acknowledgements
This work was financially supported by the Scientific and Technological Project of Henan province (No. 202102310607, 202102310613, 202102310606), the Program for Innovation Teams in Science and Technology in Universities of Henan Province (No. 20IRTSTHN004), and the Project funded by China Postdoctoral Science Foundation (No. 2019M652526).
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Tang, Y., Huang, J., Jiang, M. et al. Photo-induced synthesis of nanostructured Pt-on-Au/g-C3N4 composites for visible light photocatalytic hydrogen production. J Mater Sci 55, 15574–15587 (2020). https://doi.org/10.1007/s10853-020-05120-5
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DOI: https://doi.org/10.1007/s10853-020-05120-5