以RuCl3、SnCl2、SnCl4为源物质,柠檬酸为络合剂,无水乙醇为溶剂制备了纳米级20%.RuO2-80%.SnO2.采用XRD、TEM和比表面(BET)等测试技术研究了产物的组织结构.结果表明:粉体为分散性良好、尺寸分布均匀、具有优良热稳定性的金红石相.以SnCl2为反应物,完全形成尺寸约为10nm的(Ru,Sn)O2固溶体.以SnCh为反应物,形成SnO2和RuO2混合物.钌出现的温度比单一以RuCl3为源物质时出现的温度高,超过钛阳极的常规制备温度450～550℃.SnO2可以有效控制Ru的产生并阻止RuO2的择优生长取向.400℃加热保温1h的样品,其表面积比600℃加热的比表面积大,前驱体为SnCl2制备的粉末的比表面积具有比前驱体为SnCl4时的大.
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