| 葡萄糖在Ti/NanoTiO2-ZrO2修饰电极上电催化氧化 |
| Electrocatalytic Oxidation of Glucose at Ti/NanoTiO2-ZrO2 Electrode |
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| 摘要: 在无水乙醇和乙酰丙酮混合溶液中，电解Ti金属制得前驱体Ti(OCH2CH3)4-y(acac)y，再加入ZrCl4，将上述溶液直接水解、干燥后，在450 ℃煅烧2 h，粉体通过X射线衍射(XRD)分析表明：纳米TiO2-ZrO2粉体呈单分散结构。扫描电子显微镜(SEM)测试表明，颗粒平均尺寸为30~40 nm。通过溶胶-凝胶法制得高活性的Ti/NanoTiO2-ZrO2修饰电极，采用循环伏安研究发现，Ti/NanoTiO2-ZrO2电极对葡萄糖氧化具有高催化活性。在NaBr电解液中，Br-在Ti/NanoTiO2-ZrO2电极表面氧化为Br2，Br2间接电氧化葡萄糖。 |
| 关键词: 电合成 金属醇盐 葡萄糖 Ti/NanoTiO2-ZrO2修饰电极 |
| 基金项目: |
| Abstract: Nano-crystalline TiO2-ZrO2 powder was prepared by a direct hydrolysis method and then calcining for 2 h at 450 ℃ from the precursor Ti (OCH2CH3)4-y(acac)y synthesized by electrolysis of titanium in absolute ethanol and acetyl-acetone solution followed by addition of ZrCl4. XRD and SEM results show that the Nano-TiO2-ZrO2 of 30~40 nm is obtained. The highly active Ti/NanoTiO2-ZrO2 modified electrode was prepared by a sol-gel method. The results of cyclic voltammetry show that Ti/NanoTiO2-ZrO2 modified electrode exhibits high electrocatalytic activity for electro-oxidation of glucose. In the NaBr electrolyte, Br- is oxidized to Br2 electrode on the Ti/NanoTiO2-ZrO2 modified electrode surface. Glucose is indirectly electro-oxidized by Br2. |
| Keywords: Ti/nanoTiO2-ZrO2 electrode electro-catalysis electrosynthesis glucose |
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| 方文彦,王凤武,徐 迈,朱传高,魏亦军,朱其永.葡萄糖在Ti/NanoTiO2-ZrO2修饰电极上电催化氧化[J].无机化学学报,2011,27(6):1155-1159. |
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