期刊
INORGANIC CHEMISTRY
卷 54, 期 3, 页码 707-709出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic502394u
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资金
- National Science Foundation Center for Chemical Innovation on Solar Fuels [CHE-1305124]
Transition-metal silicides are part of an important family of intermetallic compounds, but the high-temperature reactions that are generally required to synthesize them preclude the formation of colloidal nanoparticles. Here, we show that palladium, copper, and nickel nanoparticles react with monophenylsilane in trioctylamine and squalane at 375 degrees C to form colloidal Pd2Si, Cu3Si, and Ni2Si nanoparticles, respectively. These metal silicide nanoparticles were screened as electrocatalysts for the hydrogen evolution reaction, and Pd2Si and Ni2Si were identified as active catalysts that require overpotentials of -192 and -243 mV, respectively, to produce cathodic current densities of -10 mA cm(-2).
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