铂微粒修饰纳米二氧化钛电极对甲醇催化氧化的研究  

INVESTIGATION ON ELECTROCATALYTIC OXIDATION OF METHANOL ON Ti/NANO-TiO_2-Pt FILM ELECTRODE MODIFIED BY PLATINUM MICROPTICLES

作　　者：董宗木[1] 苏桂琴[2] 褚道葆[1] 周幸福[1] 朱琼霞[1] 

机构地区：[1]安徽师范大学有机化学研究所,安徽芜湖241000 [2]芜湖师范专科学校化生系,安徽芜湖241008

出　　处：《安徽师范大学学报（自然科学版）》2003年第4期364-366,共3页Journal of Anhui Normal University(Natural Science)

基　　金：安徽省自然科学基金资助项目(00045317);安徽省高校自然科学基金资助项目(2000j1093).

摘　　要：在纳米二氧化钛膜上修饰铂微粒制得钛基纳米TiO2 Pt(Ti/nano-TiO2 Pt)复合催化电极.用循环伏安法和计时电位法研究了甲醇在Ti/nano-TiO2 Pt电极上电催化氧化.结果表明Ti/nano-TiO2-Pt电极对甲醇氧化具有高催化活性和稳定性.这是由于铂在纳米二氧化钛膜上有较好的分散性.铂微粒与纳米二氧化钛的协同作用.使电极不易中毒.The nm-TiO_2/Ti film electrode modified by Pt micropaticles show the excellent electrocatalytic activity and stability for the oxidation of methanol .Methanol oxidation on the prepared elecrode was studied using cyclic voltammetry and chronopotentiometry. The results showed that, the high electrocatalytic activities for methanol oxidation is due to the high dispersion of Pt particles on nm-TiO_2/Ti film electrode. The good stabilities can be attributed to the synergistic effect between Pt and TiO_2,avoiding the electrodes being poisoned.

关 键 词：纳米二氧化钛电极 铂 甲醇 电催化氧化 修饰电极 甲醇燃料电池 催化剂 

分 类 号：TM911.4[电气工程—电力电子与电力传动] O646.54[理学—物理化学]