排序方式: 共有1条查询结果,搜索用时 0 毫秒
1
1.
Platinum-supported ordered mesoporous carbon catalysts were prepared employing
colloidal platinum reduced by four different reducing agents, viz., paraformaldehyde, sodium
borohydride, ethylene glycol and hydrogen, and deposited over ordered mesoporous carbon
(CMK-3) synthesized by silica hard template (SBA-15). The resulting platinum nanoparticles
supported mesoporous carbon, designated as Pt/CMK-3, catalysts were tested for the electocatalytic
oxidation of methanol. The effect of the various reduction methods on the influence of particle
size vis- a-vis on the electrocatalytic effect is investigated. All the catalysts were systematically
characterized by XRD, BET and TEM. The results of the synthetic methods, characterization
techniques and the electrocatalytic performance indicate that the Pt/CMK-3 catalysts are superior
to that prepared with activated carbon (Pt/AC) as well as with that of the commercial platinumsupported
carbon catalyst (Pt/E-TEK). In particular, the catalyst, Pt/CMK-3, prepared using
paraformaldehyde reduced platinum showed much higher activity and long-term stability as
compared to the other reducing methods. 相似文献
1