高等学校化学学报2011，Vol.32Issue(11)：2650-2656,7.
形貌可控的钯纳米粒子的电化学制备及电催化性质
Electrochemical Preparation of Shape-controlled Pd Nanoparticles and Their Electrocatalytic Properties
摘要
Abstract
The electrochemical preparation of shape-controlled palladium nanoparticles( PdNPs) and their catalytic activity toward methanol electrooxidation were reported. PdNPs were prepared on indium tin oxides (ITO) conductive substrates by a two-step constant potential deposition method, in which Na2PdCl4 and citrate were used as precursor and capping agent. The morphology, size, and growing density of PdNPs can be controlled by varying the electrodeposition parameters, such as nanoseeds generation potential, particle growth potential, the concentration of citrate and bromide, and the deposition temperature. The Pd nanohorn arrays, spherical, flower-like and polyhedronal PdNPs were prepared on ITO substrates. The electrocatalytic properties for methanol oxidation on PdNPs with different morphologies were investigated in alkaline solution. Compared with other PdNPs, the Pd nanohorns demonstrated a much larger surface area on an ITO substrate with a fixed area due to their larger height. As a result, the Pd nanohorn arrays exhibite a higher catalytic activity toward methanol electrooxidation, making them a potential candidate for alkaline direct fuel cell anode materials.关键词
钯纳米粒子/电化学沉积/氧化铟锡导电玻璃/甲醇/电催化Key words
Palladium nanoparticle/ Electrodeposition/ Indium tin oxides (ITO) conductive glass/ Methanol/ Electrocatalysis分类
化学化工引用本文复制引用
晏晓晖,刁鹏,项民..形貌可控的钯纳米粒子的电化学制备及电催化性质[J].高等学校化学学报,2011,32(11):2650-2656,7.基金项目
国家自然科学基金(批准号:20973020,20773007)、高等学校博士学科点基金(博导类)(批准号:20101102110002)和新世纪优秀人才支持计划(批准号:NCET-08-0034)资助. （批准号:20973020,20773007）
