Influence of cobalt oxide substrate on the resistance to fouling during methanol oxidation of platinum particles
Influence of cobalt oxide substrate on the resistance to fouling during methanol oxidation of platinum particles
复制标题
氧化钴基质对铂颗粒甲醇氧化过程中抗结垢能力的影响
DOI：
10.1016/j.elecom.2012.12.027
复制
发表时间：
2013
影响因子：
5.4
通讯作者：
A. Fujishima
中科院分区：
文献类型：
--
作者：
Tanţa Spătaru;M. Anastasescu;N. Spătaru;A. Fujishima
通过简单的电化学方法，在导电金刚石上阳极沉积Co3O4，然后阴极沉积铂，制备了一种钴基复合材料。使用的Co3O4基板导致Pt颗粒的活性表面积增强，确保更有效地利用贵金属。当沉积在钴氧化物上时，铂颗粒在甲醇氧化过程中不易因CO中毒而失活。这种行为被暂时归因于高得多的表面浓度的稳定氧化物物种的铂（特别是氧化物）观察Co3O4支持的Pt颗粒。
A cobalt oxide-based composite was obtained by a simple electrochemical procedure, involving Co3O4anodic deposition on conductive diamond, followed by platinum cathodic deposition. The use of a Co3O4substrate led to an enhanced active surface area of Pt particles, ensuring more efficient use of the noble metal. When deposited on cobalt oxide, platinum particles are less susceptible to deactivation via CO poisoning during methanol oxidation. This behavior was tentatively ascribed to the much higher surface concentration of stable oxygenated species of platinum (especially oxides) observed for Co3O4-supported Pt particles.