Department of Chemistry, University of North Dakota, Grand Forks, ND 58202-9024, USA.
J Colloid Interface Sci. 2010 Nov 15;351(2):365-73. doi: 10.1016/j.jcis.2010.07.068. Epub 2010 Aug 2.
A simple method was developed for the template synthesis of silica-supported Pt and bimetallic Pt-Ru nanocatalysts. The synthesis used amine-functionalized silica nanoparticles as both template and support for the formation of metal nanoclusters with a precise composition, narrow size distribution, uniform shape and close spatial association. The nanocatalysts were compared with a commercial Pt-C catalyst used in fuel cell applications. Electrochemical measurements of methanol oxidation demonstrated higher catalytic activity for silica-supported Pt nanocatalysts and a reduced CO poisoning effect from co-templating of Pt and Ru.
一种简单的方法被开发用于介孔硅负载 Pt 和 Pt-Ru 双金属纳米催化剂的模板合成。该合成方法使用胺功能化的介孔硅纳米粒子作为模板和载体，用于形成具有精确组成、窄粒径分布、均匀形状和紧密空间关联的金属纳米簇。将纳米催化剂与用于燃料电池应用的商业 Pt-C 催化剂进行了比较。甲醇氧化的电化学测量表明，介孔硅负载 Pt 纳米催化剂具有更高的催化活性，并且 Pt 和 Ru 的共模板化降低了 CO 中毒效应。
