Uniform dispersion of Pd nanoparticles on carbon nanostructures using a supercritical fluid deposition technique and their catalytic performance towards hydrogen spillover

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题名:	Uniform dispersion of Pd nanoparticles on carbon nanostructures using a supercritical fluid deposition technique and their catalytic performance towards hydrogen spillover
作者:	Chen,CY;Chang,JK;Tsai,WT;Hung,CH
贡献者:	材料科學與工程研究所
关键词:	METAL-ORGANIC FRAMEWORKS;PALLADIUM NANOPARTICLES;FUEL-CELLS;ELECTROLESS DEPOSITION;NANOTUBES;STORAGE;DIOXIDE;METHANOL;ELECTROCATALYST;IMPREGNATION
日期:	2011
上传时间:	2012-03-27 16:29:22 (UTC+8)
出版者:	國立中央大學
摘要:	With the aid of supercritical carbon dioxide (scCO(2), which has gas-like diffusivity, extremely low viscosity, and near-zero surface tension, highly dispersed Pd nanoparticles (NPs) can be directly synthesized on carbon nanotubes (CNTs). Due to the excellent wettability between scCO(2) and the carbon surface, the deposited Pd NPs are uniformly distributed and tightly anchored on CNTs, which do not require pretreatment. The decoration density of NPs on carbon can be easily regulated by adjusting the Pd(hfa)(2) precursor to CNT ratio, with the particle size of Pd remaining almost constant (no significant crystal growth or aggregation occur). The prepared Pd NPs on CNTs show excellent activity toward hydrogen spillover as compared to those fabricated using conventional processes. With the superior utilization of NPs, a smaller amount of Pd is required, reducing both costs and environmental impact. The proposed scCO(2)-assisted protocol for constructing NP/carbon nanostructures is effective, versatile, and potentially scalable, making it useful for further exploitation in a variety of applications.
關聯:	JOURNAL OF MATERIALS CHEMISTRY
显示于类别:	[材料科學與工程研究所 ] 期刊論文

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