| 高活性Ti基纳米TiO2膜催化电极的制备 |
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| 引用本文： | 褚道葆,沈广霞,周幸福,顾家山,林昌健,林华水.高活性Ti基纳米TiO2膜催化电极的制备[J].电化学,2001,7(2):249-254. |
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| 作者姓名： | 褚道葆 沈广霞 周幸福 顾家山 林昌健 林华水 |
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| 作者单位： | 1. 安徽师范大学有机化学研究所,
2. 厦门大学材料科学系, |
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| 基金项目： | 安徽省高校自然科学基金(2000j1093;99j10075)资助项目 |
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| 摘 要： | 采用“牺牲职极法”恒槽压电解含有0．005mol.L^-1四乙基基溴化铵的醇溶液，加入微量乙醇丙酮作稳定剂，电合成TiO2前驱体钛酸乙酯Ti(EtO)4，经水解、涂膜、煅烧制备Ti基纳米TiO2膜电极（Ti/nano-TiO2)。TEM、SEM、XRD测试表明：TiO2颗粒尺寸在10－35nm`，膜厚达0．5μm主要为锐钛矿晶型，膜为多孔三维网状结构，循环伏安法研究了纳米TiO2膜电极对草酸还原为乙醛酸、硝基苯还原为对氨基苯酚反应的电催化活性，结果发现纳米膜中的Ti( Ⅳ）/Ti（Ⅲ）氧化还原电对起一种中介作用，可使有机物如草酸和硝基苯间电还原，且电极催化活性高，性能稳定 。
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| 关 键 词： | 钛基 纳米二氧化钛膜 催化电极 制备 电催化 电合成 Sol－gel法 |
| 文章编号： | 1006-3471(2001)02-0249-06 |
| 修稿时间： | 2000年9月30日 |
Preparation of Ti-Based Nanocrystalline TiO2 Film Electrode with High Activity |
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| CHU Dao-bao.Preparation of Ti-Based Nanocrystalline TiO2 Film Electrode with High Activity[J].Electrochemistry,2001,7(2):249-254. |
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| Authors: | CHU Dao-bao |
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| Abstract: | The potentiostatic electrosynthesis of Ti(EtO)4 was studied by anodic dissolution of metal titanium(TA1) in solution of 0.005 mol*L-1(EtO)4NBr in the ethanol (AR) in the presence negligible CH3COCH2COCH3.The Ti-based nanocrystalline TiO2 Film electrode (Ti/nano-TiO2) was prepared by sol-gel method.By TEM,SEM and XRD,it has been shown that the anatase particle of TiO2 was 10～35 nm in diameter and the film was 0.5 μm in thickness.The nanocrystalline film was composed of a three-diminsional network of interconnected particles.Reodx behavior and electrocatalytic activities of the Ti/nano-TiO2 electrode were investigated by cyclic voltammetry (CV) from oxalic acid and nitrobenzene to glyoxalic acid and p-aminionphenol. The Ti(Ⅳ)/Ti(Ⅲ) redox system,as a medium,shows highly electrocatalytic activities and stable characteristic to indirect electroreduction of organic compounds(e.g.:oxalic acid and nitrobenzene). |
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| Keywords: | Nanocrystalline TiO 2 film electrode Electrocatalysis Electrosynthesis The Sol_gel method |
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