Ti基纳米TiO_2-CNT-Pt复合电极制备、表征及电化学性能

褚道葆

doi:10.61558/2993-074X.1644

电化学 >

2005 , Vol. 11 >Issue 2: 219 - 223

DOI: https://doi.org/10.61558/2993-074X.1644

研究论文

Ti基纳米TiO_2-CNT-Pt复合电极制备、表征及电化学性能

褚道葆

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安徽师范大学化学与材料科学学院应用化学研究所,安徽师范大学化学与材料科学学院应用化学研究所,安徽师范大学化学与材料科学学院应用化学研究所,安徽师范大学化学与材料科学学院应用化学研究所安徽芜湖241000 ,安徽芜湖241000 ,安徽芜湖241000 ,安徽芜湖241000华东师范大学化学系上海200030

收稿日期: 2005-05-28

修回日期: 2005-05-28

网络出版日期: 2005-05-28

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Preparation, Characterization and Electrochemical Properties of Nano TiO_(2)-CNT-Pt on Ti Substrate Complex Electrode

CHU Dao-bao~

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(*1),FENG De-xiang~1, ZHANG Jin-hua~1, LI Xiao-hua~(1,2 )(1. College of Chemistry and Materials Science, Institute of Applied Chemistry, Anhui Normal University, Wuhu 241000,China,2. Department of Chemistry, Hua Dong Normal University , Shanghai 200030,China

Received date: 2005-05-28

Revised date: 2005-05-28

Online published: 2005-05-28

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摘要

以电合成前驱体Ti(OEt)4直接水解法和电化学扫描电沉积法制备Ti基纳米TiO2-CNT-Pt(Ti/nanoTiO2-CNT-Pt)复合电极.透射电镜(TEM)和X射线衍射(XRD)测试表明,锐钛矿型纳米TiO2粒子(粒径5～10nm)和碳纳米管(CNT)结合形成网状结构,Pt纳米粒子(平均粒径9nm)均匀地分散在纳米TiO2-CNT复合膜表面.循环伏安及计时电流测试表明,Ti/nanoTiO2-CNT-Pt复合电极具有高活性表面,对甲醇的电化学氧化具有高催化活性和稳定性,Pt载量为0.32mg/cm2时,常温常压下甲醇氧化峰电流达到480mA/cm2.

关键词： 纳米TiO2; 碳纳米管; 铂纳米粒子; 甲醇电氧化; 复合电极

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褚道葆 . Ti基纳米TiO_2-CNT-Pt复合电极制备、表征及电化学性能[J]. 电化学, 2005 , 11(2) : 219 -223 . DOI: 10.61558/2993-074X.1644

Abstract

The nanoTiO_(2)-CNT-Pt on Ti substrate complex electrodes were prepared from precursor of (Ti(OEt)_(4)) directly hydrolyzed and by cyclic voltammograms electroplating method . The XRD and SEM results showed that the nano TiO_(2) (anatase) particle sizes ranged 5~10 nm and the Pt nanoparticle (average size 9nm) dispersed uniformly on nanoTiO_(2)-CNT film surface. The electrocatalytic activity of Ti/nanoTiO_(2)-CNT-Pt electrode was investigated by cyclic voltammetry and chronopotentiogram. The results indicated that the Ti/nanoTiO_(2)-CNT-Pt electrode exhibited very high electrocatalytic activity and stability for the electro-oxidation of methanol at room temperature. When Pt loading was 0.32 mg/cm~(2), the oxidation peak current of methanol was 480 mA/cm~(2).

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