摘要
在含四氢呋喃(THF)的水溶液中,室温下用NaBH4还原H2PtC l6和RuC l3制得Pt-Ru/C催化剂.其Pt-Ru粒子的合金化程度较高,平均粒径较小,相对结晶度较低.因此对甲醇氧化的电催化活性远高于Pt-Ru粒子的平均粒径和相对结晶度相似的,而且Pt-Ru合金化程度低的商业化的E-TEK的Pt-Ru/C催化剂,表明Pt-Ru的合金化程度对Pt-Ru/C催化甲醇氧化的电催化活性有很大的影响.
It was found that the carbon supported Pt-Ru catalyst（Pt-Ru/C） with the Pt-Ru particles with high alloying, small average size and low relative crystallinity can be prepared in the aqueous solution with tetrahydrofuran （THF） using NaBH4 as a reductant for reducing H2PtCl6 and RuCl3 at room temperature. The electrocatalytic activity of the Pt-Ru/C catalyst for the methanol oxidation is much higher than that of the commercial E-TEK Pt-Ru/C catalyst with the similar average size and relative crystallinity, but low alloying. It is indicated that the alloying of Pt-Ru could significantly affect the electrocatalytic activity of the Pt-Ru/C catalyst for the methanol oxidation. The Pt-Ru/C catalyst with high alloying can be obtained because THF and H2PtCl6 can form the complex leading to that the reduction potentials of H2PtCl6 and RuCl3 are closed in the aqueous solution with THF.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第4期676-679,共4页
Chemical Journal of Chinese Universities
基金
国家"八六三"计划项目(批准号:2003AA517060)
国家自然科学基金(批准号:20373068
20433060
20573057)
江苏省科技厅高新技术基金(批准号:BG2003022)
江苏省教育厅基金(批准号:JH02-080
05KJB150061)
国家"211"工程重点项目资助
