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化学学报
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化学学报 ›› 2010, Vol. 68 ›› Issue (02): 125-130. 上一篇    下一篇

研究论文

Ti/nanoTiO2-Pt阳极和Ti/nanoTiO2阴极成对电合成葡萄糖酸锌和丁二酸

 褚道葆, 张雪娇, 何建国, 侯源源, 肖英   

  1. (安徽省功能性分子固体、分子基材料重点实验室 安徽师范大学化学与材料科学学院 芜湖 241000)
  • 投稿日期:2009-05-13 修回日期:2009-07-31 发布日期:2010-03-17
  • 通讯作者: 褚道葆 E-mail:dbchu@sina.com
  • 基金资助:

    国家自然科学基金(No. 20476001)；安徽省自然科学基金(No. 070414160)；高校自然科学重点基金(KJ2007A010)

A Paired Electrosynthesis of Zinc Gluconate and Succinic acid Using Ti/nanoTiO2-Pt Anode and Ti/nanoTiO2 Cathode

Chu Daobao* Zhang Xuejiao He Jianguo Hou Yuanyuan Xiao Ying   

  1. (Anhui Key Laboratory of Functional Molecular Solids and Molecular-based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000)
  • Received:2009-05-13 Revised:2009-07-31 Published:2010-03-17
  • Contact: DaoBao Chu E-mail:dbchu@sina.com

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使用新颖的纳米结构电极成对电合成葡萄糖酸锌和丁二酸. 采用溶胶-凝胶法制备Ti基纳米TiO2 (Ti/nanoTiO2)电极, 同时采用电沉积法制备Ti基纳米TiO2-Pt (Ti/nanoTiO2-Pt)修饰电极. 通过循环伏安研究发现, Ti/nanoTiO2-Pt电极对葡萄糖氧化及Ti/nanoTiO2电极对马来酸还原均具有高催化活性. 以Ti/nanoTiO2-Pt电极为阳极、Ti/nanoTiO2电极为阴极, 通过正交实验得到成对电合成葡萄糖酸锌和丁二酸的优化条件为: 阳极和阴极电流密度分别为1.2 A•dm－2和3.0 A•dm－2, 阳极液为0.4 mol•L－1葡萄糖＋0.6 mol•L－1 NaBr, 阴极液为0.6 mol•L－1马来酸＋0.2 mol•L－1 NaCl, 温度50 ℃. 成对电合成的总电流效率达到170%.

关键词: 成对电合成, 葡萄糖酸锌, 丁二酸, Ti/nanoTiO2-Pt阳极, Ti/nanoTiO2阴极

A paired electrosynthesis of zinc gluconate and succinic acid using novel nano-electrodes was studied. A Ti/nanoTiO2 electrode and a nanoTiO2 film loaded Pt nanoparticle electrode (Ti/nanoTiO2-Pt) were prepared by a sol-gel method and an electrochemical deposition technique. The results of cyclic voltammetry showed that the Ti/nanoTiO2-Pt electrode as anode and the Ti/nanoTiO2 electrode as cathode exhibited high electrocatalytic activity for electro-oxidation of glucose and electro-reduction of maleic acid respectively. According to the orthogonal experiment, the optimum conditions obtained were as follows: anodic and cathodic current density at 1.2 and 3.0 A•dm－2 respectively, 0.4 mol•L－1 glucose and 0.6 mol•L－1 NaBr in anodic electrolyte, 0.6 mol•L－1 maleic acid and 0.2 mol•L－1 NaCl in cathodal electrolyte, and the temperature at 50 ℃. Total current efficiency attained to 170%.

Key words: paired electrosynthesis, zinc gluconate, succinic acid, Ti/nanoTiO2-Pt anode, Ti/nanoTiO2 cathode

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