中文摘要：

采用溶剂热法制备了SnO2纳米棒载体，用溶剂热还原法制备了Pd/SnO2催化剂和不同Pd/Sb原子数比的系列PdSb/SnO2复合催化剂。用XRD、SEM、TEM、EDS等手段对样品进行分析表征，并以循环伏安法对比评价催化剂对甲酸的电催化氧化性能。表征结果表明，制备所得SnO2纳米棒载体为针状，大小均匀，平均直径为100nm；负载所得催化剂中活性粒子大小约为13.5nm，掺杂Sb后，粒径约为9.5nm。电催化氧化性能对比结果表明，Pd/Sb原子数比为4:1的Pd4Sb/SnO2复合催化剂对甲酸的氧化具有较好的催化能力，当E=0.25V(vsSCE)时，Pd4Sb/SnO2上甲酸氧化的峰电流密度达到25mA/cm2，远远高于Pd/SnO2催化剂。

英文摘要：

SnO2nanorod carrier was prepared by the solvothermal method,and the Pd/SnO2catalysts and aseries of PdSb/SnO2composite catalysts with different Pd/Sb atomic ratios were prepared by thesolvothermal reduction method.The samples were characterized by XRD,SEM,TEM and EDS.Cyclicvoltammetry was used to investigate the catalytic activity of the Pd/SnO2and PdSb/SnO2catalysts on theformic acid oxidation.The results revealed that SnO2nanorod carrier was needle-shaped and its averagediameter was about100nm;The active particle size of the supported catalyst was about13.5nm,while itwas about9.5nm after the addition of Sb.The comparison results of electrocatalytic oxidation showed thatPd4Sb/SnO2(with nPd:nSb=4:1)catalyst exhibited the best catalytic activity.And the current density of thePd4Sb/SnO2catalyst was about25mA/cm2when E=0.25V(vs SCE)which is far higher than that of thePd/SnO2.