期刊
NANOSCALE
卷 12, 期 20, 页码 11055-11062出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0nr02092c
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资金
- Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) [18F18372]
- Japan Society for the Promotion of Sciences (JSPS) Standard Postdoctoral Fellowship
- Grants-in-Aid for Scientific Research [18F18372] Funding Source: KAKEN
Developing novel hydrogen evolution reaction (HER) catalysts with high activity, high stability and low cost is of great importance for the ever-broader applications of hydrogen energy. Among the conventionally used platinum-based heterogeneous catalysts, the high consumption and low utilization efficiency of precious platinum are the most crucial issues. Herein we present a facile approach to prepare an effective HER catalyst with platinum nanoparticles dispersed on oxygen-deficient TiO(2-x)nanosheets (NSs). The fabricated Pt-TiO2-xNS electrocatalyst shows an overpotential of 35 mV at 10 mA cm(-2)for the HER in 0.5 M H2SO4, which is highly comparable to that of commercial Pt/C (34 mV). More attractively, the Pt-TiO2-xNS electrocatalyst largely enhanced the mass activity (MA) of Pt and electrochemical stability compared to commercial Pt/C. The excellent HER performance of Pt-TiO(2-x)NSs is attributed to the synergetic effect between highly dispersed Pt species and TiO(2-x)NSs with oxygen vacancies, which enhances both electrocatalytic activity and durability over a wide pH range. This strategy can provide insights into constructing highly efficient catalysts and their support for different energy-related applications.
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