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Electrocatalytic Reduction of Furfural and Carbon Dioxide on Nanocrystalline TiO2-CNT Complex Film Electrode

Author: ZhangLiYan
Tutor: ZuoDaoZuo
School: Anhui Normal University
Course: Organic Chemistry
Keywords: Nanocrystalline TiO2-CNT Complex Film electrode furfural furfural alhocol Electrocatalytic reduction Carbon Dixiode cyclic voltammetry controlled-potential electrolyses
CLC: O646.54
Type: Master's thesis
Year: 2006
Downloads: 257
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Abstract


The paper is composed of the following two parts:First, Heterogeneous Electrocatalytic Reduction of Furfural on Nanocrystalline TiO2-CNT Complex Film Electrode in DMF Solution. The precursor Ti(OEt)4 was prepared by anodic dissolution of metallic titanium in absolute ethanol and directly hydrolyzed to prepare nanocrystalline TiO2 -carbon nanotube (nanoTiO2-CNT)complex film by a sol-gel process. Redox behavior and electrocatalytic activities of the nanoTiO2-CNT complex film electrode were investigated by cyclic voltammetry (CV) and bulk electrolysis in DMF solution. It was found that there were two pairs of well-defined redox peaks for nanoTiO2-CNT complex film electrode with Er1/2–1.27 V and–2.43 V(vs. SCE) at 100 mV.s-1 in correspondence with TiO2/Ti2O3 reversible and TiO2/Ti(OH)3 quasi-reversible electrode process, and the heterogeneous electrocatalytic reduction activities of TiO2/Ti(OH)3 redox system for furfural; The indirect electroreduction of furfural to furfural alcohol by Ti(Ⅲ)/Ti(Ⅳ) redox system on nanoTiO2-CNT complex film surface in DMF. The electrode reaction mechanism is the called catalytic(EC′)mechanism.Second, Electroreduction of Carbon Dioxide on Nanocrystalline TiO2-CNT Complex Film Electrode in tetrabutylammonium bromide solution and fixation of Carbon Dioxide to organic compounds. First, electrochemical activities of TiO2-CNT Complex film electrode in the reduction of CO2 were studied by cyclic voltammetry. Second, the fixation of CO2 was investigated by controlled-potential electrolyses on Nanocrystalline TiO2-CNT Complex Film Electrode in tetrabutylammonium bromide solution. Electrolysis fixation product were identified

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CLC: > Mathematical sciences and chemical > Chemistry > Physical Chemistry ( theoretical chemistry ),chemical physics > Electrochemical,electrolytic,magnetic,chemical > Electrolysis and Electrode role > Electrode process
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