| Pt/纳米TiO2-CNT复合电极的制备及对甲醇的电催化氧化 |
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| 引用本文： | 冯德香,褚道葆,李晓华. Pt/纳米TiO2-CNT复合电极的制备及对甲醇的电催化氧化[J]. 安徽师范大学学报(自然科学版), 2005, 28(2): 192-196 |
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| 作者姓名： | 冯德香 褚道葆 李晓华 |
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| 作者单位： | 安徽师范大学,化学与材料科学学院,安徽,芜湖,241000;安徽师范大学,化学与材料科学学院,安徽,芜湖,241000;华东师范大学,化学系,上海,200030 |
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| 基金项目： | 安徽省自然科学基金 , 安徽省高校科研项目 |
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| 摘 要： | 通过电合成前驱体Ti(OEt)4直接水解法和在恒电位-0.05V (vs. SCE)电沉积法制备Pt/nano TiO2-CNT电极.透射电镜 (TEM) 和X射线衍射 (XRD) 分析结果表明, 锐钛矿型纳米TiO2粒子(粒径5-10nm) 和碳纳米管结合形成网状结构, Pt纳米粒子(粒径8-15 nm)均匀地分散在纳米TiO2/碳纳米管复合膜表面.通过循环伏安和计时电流测试表明, Pt/ nano TiO2-CNT电极具有高活性表面, 同时对甲醇的电化学氧化具有高催化活性和稳定性,Pt载量为0.24mg/cm2时, 常温常压下甲醇的氧化峰电流达到260mA/cm2.
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| 关 键 词： | 纳米TiO2 碳纳米管 铂纳米粒子 复合电极 甲醇电氧化 |
| 文章编号： | 1001-2443(2005)02-0192-04 |
| 修稿时间： | 2004-11-02 |
PREPARATION OF Pt/nano-TiO2-CNT ELECTRODE AND ITS ELECTRO-OXIDATION FOR METHANOL |
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| FENG De-xiang,CHU Dao-bao,LI Xiao-hua. PREPARATION OF Pt/nano-TiO2-CNT ELECTRODE AND ITS ELECTRO-OXIDATION FOR METHANOL[J]. Journal of Anhui Normal University(Natural Science Edition), 2005, 28(2): 192-196 |
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| Authors: | FENG De-xiang CHU Dao-bao LI Xiao-hua |
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| Abstract: | It is reported for the first time that the carbon nano-TiO_2-nanotubes supported Pt nanoparticles (Pt/nano TiO_2-CNT) composite catalysts were prepared by the precursor Ti(OEt)_4 directly hydrolyzed and electrodeposited at -0.05V vs. SCE .The results characterized by XRD and SEM shows that the nano TiO_2(anatase)particle size is about 5-10 nm and Pt nanoparticle (9nm) dispersed uniformly on nano TiO_2-CNT film surface. The electrocatalytic activity of Pt/nano TiO_2-CNT electrode was investigated by cyclic voltammetry and chronopotentiogram. The results indicated that Pt/nano TiO_2-CNT electrode exhibited very high electrocatalytic activity and stability for the electro-oxidation of methanol in the room temperature. When Pt loading is 0.24 mg/cm~2, the oxidation current for methanol was 260 mA/cm~2, which is higher than Pt/nano TiO_2 electrode. |
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| Keywords: | nano TiO_2 CNT Pt nanoparticles complex electrode electro-oxidation of methanol |
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