钯镍合金负载多壁纳米碳管储氢材料的制备及其在温和条件下储氢行为的研究  

Hydrogen Storage Properties of Pd-Ni Alloy Nanoparticles Supported Mutiwalled Carbon Nanotubes

作　　者：任建伟[1] 廖世军[1] 刘军民[1] 

机构地区：[1]华南理工大学化学科学学院,广州510641

出　　处：《武汉理工大学学报》2006年第E02期393-398,共6页Journal of Wuhan University of Technology

基　　金：国家自然科学基金（20476034）和华南理工大学科技发展基金（124-D75010）.

摘　　要：采用一种新型的溶胶法制备了PdNi18合金纳米粒子，负载到特殊预处理过的多壁纳米碳管上得到PdNi18／MWCNTs复合储氢材料。XRD和TEM测试表明，PdNi18合金纳米粒于较均匀地分布在载体表面且粒径约3nm。储氢结果显示，该复合材料在室温、1．5MPa条件下可储氢质量分数2．38％，比相关报道要高很多。A type of novel material with high hydrogen storage capacity was prepared by supporting PdNi18 alloy nanoparticles, which was synthesized by using a new colloid method, on the prctreated multiwalled carbon nanotubes （MWCNTs）. The average PdNi18 alloy particles sizes calculated from XRD patterns was ca 3 nm, and the high dispersion of these particles on MWCNTs was confirmed by the HRTEM images. Hydrogen adsorption performance of this composition was investigated under moderate pressure（0, 1- 1.5 MPa） at room temperature, and a maximum adsorption of ca 2.38 % was achieved with this material under 1.5 MPa at room temperature, which was much higher than that reported previously at the same conditions.

关 键 词：储氢 多壁纳米碳管 溶胶法 PdNi18纳米粒子 

分 类 号：O643[理学—物理化学]