In situ One-Pot Fabrication of MoO3-x Clusters Modified Polymer Carbon Nitride for Enhanced Photocatalytic Hydrogen Evolution |
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| Authors: | Rong-jie Qi Jun-ying Liu Zhi-dong Wei Wei-qi Guo Zhi Jiang Wen-feng Shangguan |
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| Affiliation: | a.Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, Chinab.Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | Developing low-cost and high-efficient noble-metal-free cocatalysts has been a challenge to achieve economic hydrogen production. In this work, molybdenum oxides (MoObegin{document}$_{3-x}$end{document}) were in situ loaded on polymer carbon nitride (PCN) via a simple one-pot impregnation-calcination approach. Different from post-impregnation method, intimate coupling interface between high-dispersed ultra-small MoObegin{document}$_{3-x}$end{document} nanocrystal and PCN was successfully formed during the in situ growth process. The MoObegin{document}$_{3-x}$end{document}-PCN-begin{document}$X$end{document} (begin{document}$X$end{document}=1, 2, 3, 4) photocatalyst without noble platinum (Pt) finally exhibited enhanced photocatalytic hydrogen performance under visible light irradiation (begin{document}$lambda$end{document}begin{document}$>$end{document}420 nm), with the highest hydrogen evolution rate of 15.6 μmol/h, which was more than 3 times that of bulk PCN. Detailed structure-performance revealed that such improvement in visible-light hydrogen production activity originated from the intimate interfacial interaction between high-dispersed ultra-small MoObegin{document}$_{3-x}$end{document} nanocrystal and polymer carbon nitride as well as efficient charge carriers transfer brought by Schottky junction formed. |
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| Keywords: | Noble-metal-free cocatalyst Polymer carbon nitride MoO M9" >begin{document}$_{3-x}$end{document} clusters Schottky junction Photocatalytic hydrogen production |
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