摘要
采用化学还原法制备了不同原子比的Pd-Ag/C催化剂。通过X射线衍射(XRD)表征了催化剂的晶体结构,并运用循环伏安、计时电流等电化学方法研究了其对硼氢化钠电氧化反应的催化活性。结果表明:适量Ag的掺杂不仅可以提高催化剂的催化活性,而且使得硼氢化钠电氧化反应过程中的转移电子数增加,其中Pd_(75)Ag_(25)/C的催化活性和转移电子数均为最高。
Pd-Ag / C catalysts with different atomic ratio were prepared using chemical reduction method.The crystal structure of the catalysts was characterized through XRD technique; the electrocatalytic activity for sodium borohydride electrooxidation was investigated by cyclic voltammetry( CV),chronoamperometry( CA) and other electrochemical methods. The results showed that the Ag dopedwith appropriate amount can not only enhance the catalytic activity of the catalysts,but also make the electron numbers of sodium borohydride electrooxidation increased,especially the Pd_(75)Ag_(25)/ C catalyst presents the highest electrocatalytic activity and electron numbers among all the prepared catalysts.
出处
《化学工业与工程》
CAS
CSCD
2016年第5期45-49,共5页
Chemical Industry and Engineering
