RuO_2/SWNTs-Pt修饰电极对二氧化碳的电催化还原

Electrocatalytic Reduction of Carbon Dioxide on RuO_2/SWNTs-Pt Modified Electrode

通过超声方法在三乙醇胺和乙醇的混合水溶液中将 Ru O2 担载在单壁碳纳米管上 ,并以 0 .0 5 % Nafion溶液在铂电极上制备成它的修饰电极 .在 Na HCO3水溶液中 ,利用循环伏安 ,稳态极化和恒电位极化等方法分别研究了 Ru O2 /SWNTs,Ru O2 和 SWNTs薄膜修饰电极对 CO2 的电催化还原活性 .结果表明 ,相对于 Ru O2 和SWNTs薄膜修饰电极 ,Ru O2

RuO_2/single-wall carbon nanotubes (SWNTs) composites were prepared by loading of RuO_2\ on SWNTs in a mixed aqueous solution of thiethanolamine+ethanol by ultrasound irradiation. The electrocatalytic activities of RuO_2/SWNTs, RuO_2 and SWNTs modified Pt electrode for the electrochemical reduction of CO_2 in aqueous solution were investigated by using CV, steady-state polarization and constant potential polarization, respectively. The results demonstrated that the RuO_2/SWNTs modified electrodes exhibited a more positive overpotential and high electrocatalytic activity for reduction of CO_2 compared with RuO_2 and SWNTs modified electrodes.