F掺杂TiO_2的制备及其甲醇电氧化性能研究  

Preparation of F-doped TiO_2 and Research on Its Application for Methanol Electro-oxidation

作　　者：刘春涛[1] 李亚北[1] 张智[2] 李里[1] 于秀娟[1] 万家峰[1] 杜春雨[3] 

机构地区：[1]黑龙江大学化学化工与材料学院,黑龙江哈尔滨150080 [2]黑龙江省科学院石油化学研究院,黑龙江哈尔滨150040 [3]哈尔滨工业大学化工学院,黑龙江哈尔滨150001

出　　处：《化学与粘合》2015年第3期184-186,204,共4页Chemistry and Adhesion

基　　金：黑龙江省教育厅科学技术研究项目(编号:12521427)

摘　　要：采用水热法制备了F掺杂的TiO2,将其与碳黑机械混合制成复合载体,采用微波辅助加热乙二醇法制备了载Pt电催化剂。通过X射线衍射(XRD)和扫描电镜(SEM)对F-TiO2进行了表征,结果表明,F掺杂后,TiO2仍然呈锐钛矿结构,形貌呈纳米片层结构。Pt/F-TiO2-C催化剂表现出很好的催化活性和稳定性,循环伏安法和计时电流法的测试结果表明,复合载体中F的加入有利于甲醇的电催化氧化,提高了Pt对甲醇氧化的抗毒化能力,使其质量比活性是商业Pt/C催化剂的1.2倍。The F-doped TiO2 prepared by hydrothermal method is mixed with conventional carbon black as a hybrid support and Pt catalysts are prepared through a microwave-assisted polyol process. The F-doped TiO2 samples are characterized by X-ray diffraction （XRD） and scanning elec- tron microscopy （SEM）. The XRD and SEM results reveal that the F-doped TiO2 samples appear anatase phase and composed of nanoplate structure. The cyclic voltammetry and chronoamperometry results show that the doping of F into hybrid support is beneficial to the electro-catalytic oxidation of methanol and the anti-poisoning ability of platinum for methanol oxidation is enhanced. The mass ratio activity of Pt/F-TiO2-C catalyst is 1.2 times higher than that of commercial Pt/C catalyst for methanol oxidation.

关 键 词：甲醇电氧化 复合载体 TIO2 F 

分 类 号：TQ426.65[化学工程]