首页> 外文期刊>International Journal of Electrochemical Science >State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Materials, Zhejiang University of Technology, Hangzhou 310032, P.R. China
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State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Materials, Zhejiang University of Technology, Hangzhou 310032, P.R. China

机译:浙江工业大学化工与材料学院绿色化学合成技术国家重点实验室培育基地,杭州310032

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摘要

TiO2 film was prepared by in-situ anodic oxidation on a polished titanium sheet in a mixed acidsolution containing 1.0 mol/l sulfuric acid and 1.0 mol/l maleic acid. By means of polar conversiontechnology, succinic acid was synthesized using a TiO2 film as cathode in the original solution. Thereduction yield and current efficiency of succinic acid were 99.36% and 97.52%, respectively. Theelemental composition, valence state analysis and superficial morphology of TiO2 film cathode beforeand after electrolysis were characterized by XPS and SEM. The electrocatalytic properties of TiO2 filmelectrode towards the electrocatalytic reduction of maleic acid to succinic acid were evaluated by CVand galvanostatic electrolysis experiments. Experimental evidence was presented that porous TiO2 filmcathode exhibited powerful electrocatalytic activity for the reduction of maleic acid. Furthermore, asynergistic effect of low valent titanium of Ti(III) and chemisorbed hydrogen (H)Ti was proposed forprobable reductive mechanism of malaeic acid to succinic acid.
机译:通过在含有1.0 mol / l硫酸和1.0 mol / l马来酸的混合酸溶液中在抛光的钛板上进行原位阳极氧化来制备TiO2膜。通过极性转化技术,在原始溶液中以TiO2薄膜为阴极合成琥珀酸。琥珀酸的产率和电流效率分别为99.36%和97.52%。用XPS和SEM表征了TiO2薄膜阴极电解前后的元素组成,价态分析和表面形貌。通过CV和恒电流电解实验评价了TiO2薄膜电极对马来酸还原为琥珀酸的电催化性能。实验证明,多孔TiO2薄膜阴极对马来酸的还原具有强大的电催化活性。此外,提出了低价钛(III)和化学吸附的氢(H)Ti的协同作用,可能是苹果酸还原为琥珀酸的机理。

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