期刊
CHEMISTRY OF MATERIALS
卷 26, 期 21, 页码 6226-6232出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm5029723
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资金
- Pennsylvania State University
- National Science Foundation (NSF) Center for Chemical Innovation on Solar Fuels [CHE-1305124]
- NSF Graduate Research Fellowship
- NSF REU program [CHE-1263053]
- Penn State Institutes of Energy and the Environment
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1263053] Funding Source: National Science Foundation
The synthesis of transition metal nitride nanoparticles is challenging, in part because the unreactive nature of the most common nitrogen reagents necessitates high-temperature and/or high-pressure reaction conditions. Here we report the solution-phase synthesis and characterization of antiperovskite-type Cu3PdN nanocrystals that are multifaceted, uniform, and highly dispersible as colloidal solutions. Colloidal Cu3PdN nanocrystals were synthesized by reacting copper(II) nitrate and palladium(II) acetylacetonate in 1-octadecene with oleylamine at 240 degrees C. The Cu3PdN nanocrystals were evaluated as electrocatalysts for the oxygen reduction reaction (ORR) under alkaline conditions, where both Cu3N and Pd nanocrystals are known to be active. The ORR activity of the Cu3(P)dN nanocrystals appears to be superior to that of Cu3N and comparable to that of Pd synthesized using similar methods, but with significantly improved mass activity than Pd control samples. The Cu3PdN nanocrystals also show greater stability than comparably synthesized Pd nanocrystals during repeated cycling under alkaline conditions.
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