应用溶胶-凝胶法制备不同铁掺杂量的ZrO2粉体,以ZrO2/C为载体制备Pt-Zr1-xFexO2/C催化剂电极.X射线衍射(XRD),透射电镜(TEM)表征载体及催化剂的表面形貌和晶体结构.结果表明,催化剂中Pt和ZrO2颗粒在活性炭表面均匀分布,铂颗粒尺寸为2~4 nm,ZrO2颗粒尺寸为3~7 nm.循环伏安法和计时电流法测定催化剂对甲醇电氧化作用,显示在ZrO2晶体中掺杂铁可以提高催化剂的甲醇电氧化活性.其性能与铁的掺杂量有关.
林茂财
,
柳东东
,
余晴春
,
胡鸣若
,
屠恒勇
. 甲醇在铁掺杂Pt-ZrO_2/C催化剂上的电氧化[J]. 电化学, 2009
, 15(2)
: 216
-219
.
DOI: 10.61558/2993-074X.1983
The Fe-doped ZrO2 powders were prepared by so-gel method.After that,Pt-Zr1-xFexO2/C catalysts were made by reducing platinum salts with ethylene glycol.The physical property of the catalyst was characterized by XRD and TEM.It was found that the distribution of the catalyst was narrow,the particle sizes of Pt and ZrO2 particles were 2~4 nm and 3~7 nm,respectively.The Cyclic Voltammetry and Chronoamperometry testing indicated that the electro-catalytic activity for methanol electro-oxidation on Pt-ZrO2/C catalyst increased when ZrO2 was doped with Fe.And Pt-Zr0.95Fe0.05O2/C catalyst showed the highest activity for the electro-oxidation of methanol.
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