| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Preparation of Sn, P Co-doped MoS2 Nanoflowers and Their Electrocatalytic Hydrogen Evolution Performance |
| ZHOU Liang1, HE Wenyuan1,2,3,*, CHEN Longyuan1, ZHU Hongwei1, CHEN Lijuan1, LING Hui1, ZHENG Xuejun1,2,3,*
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1 School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
2 Engineering Research Center of Complex Tracks Processing Technology and Equipment of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan, China
3 Key Laboratory of Welding Robot and Application Technology of Hunan Province, Xiangtan University, Xiangtan 411105, Hunan, China |
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Abstract Heterogeneous atom doping has been proved to be an effective strategy to improve the hydrogen evolution performance, as it can activate the inert basal plane of MoS2. However, most of the researches have so far focused only on single metal or non-metal atomic doping to MoS2. In this work, a novel Sn metal atom and P nonmetal atom co-doped MoS2 nanoflower (Sn, P-MoS2) was successfully prepared by a simple one-step hydrothermal method. The structure, morphology and chemical composition of the Sn, P-MoS2 were characterized by X-ray diffraction (XRD), Raman, X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM), and the results showed that Sn and P atoms were successfully doped and uniformly distributed in MoS2 lattice. Compared with pure MoS2 and Sn metal atom or P non-metal atom doped MoS2, the Sn, P-MoS2 nanoflowers exhibited a low overpotential of 277 mV at 10 mA/cm2 and a small Tafel slope of 50.2 mV/dec, sho-wing superior electrocatalytic performance for hydrogen evolution reaction in 0.5 mol/L H2SO4 solution. The excellent performance of the Sn, P-MoS2 can be attributed to the synergistic interaction between Sn and P, which promotes the formation of active sites at basal plane and reduces the free energy of hydrogen adsorption at active edges. This co-doping strategy of metal and non-metal atoms provides a viable route to develop MoS2-based catalysts for hydrogen evolution applications.
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Published: 10 August 2023
Online: 2023-08-07
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| Fund:National Natural Science Foundation of China (11832016, 51775471), Hunan Innovative Province ConstructionSpecial Major Landmark Innovation Demonstration(2019XK2303), Changsha Zhuzhou Xiangtan Landmark Engineering(2020GK2014), and Hefei General Machinery Research Institute Co.,Ltd.(20213ZK). |
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2023, Vol. 37 
