摘要
以羟丙基-β-环糊精(HP-β-CD)为添加剂修饰碳纳米管为复合载体,常温常压下,成功合成了Pd纳米簇状结构,并用于甲酸的电催化氧化.XRD及TEM结果表明,制备出的Pd纳米簇状结构由粒径均匀,约为3.6nm的纳米颗粒组成,且高度分散沉积在载体表面.循环伏安测试结果表明,催化剂Pd/HP-β-CD-MWCNTs对甲酸氧化表现出了较高的催化活性和电化学比表面积.研究表明,在HP-β-CD存在条件下,将Pd纳米簇沉积在未作处理的碳纳米管上制备的催化剂适合应用于甲酸燃料电池.
Palladium nanoclusters composed of nanoparticles with uniform size and high dispersion have been successfully assembled on hydroxypropyl-β-Cyclodextrin (HP-β-CD) modified MWCNTs via a sodium borohydride reduction process. According to the transmission electron microscopy (TEM) measurements, the average particle size of the as-prepared Pd nanopar- ticles dispersed on HP-β-CD modified MWCNTs is 3. 6 nm. Electrochemical studies reveal that the Pd/HP-β-CD-MWCNTs nanocomposites show excellent electrocatalytic activity towards formic acid oxidation, which can be used as a better potential candidate for application in a direct formic acid fuel cell (DFAFC).
出处
《河南师范大学学报(自然科学版)》
CAS
北大核心
2014年第1期60-66,共7页
Journal of Henan Normal University(Natural Science Edition)
基金
国家自然科学基金(21301051)
河南省基础与前沿研究项目(132300410016)
河南省教育厅科学技术研究重点项目(12A150013)
关键词
甲酸氧化
纳米簇状结构
羟丙基-Β-环糊精
电化学比表面积
formic acid oxidation
nanoclusters
hydroxypropyl-β-Cyclodextrin
electrochemically active surface area