纳米SnO/Ti电极电催化还原KBO2制备KBH4

先在乙二醇中电解锡片, 制备得到锡醇盐配合物, 再将电解液水解后凝胶, 在钛丝表面通过提拉法涂抹、 300 ℃煅烧2 h制备得到纳米SnO/Ti电极.
在0.3～1.2 mol/L KOH+02～0.8 mol/L KBO₂的溶液中测试SnO/Ti电极的催化还原性能,  研究影响电解还原KBO₂的主要因素, 并通过X射线衍射(XRD)和透射电子显微镜(TEM)表征SnO/Ti电极和KBH4的结构. 结果表明, 纳米SnO/Ti电极表面颗粒分散均匀, 修饰电极催化性能较好, 放电电流增大, 产率和电流效率分别为16.9%和29.2%.

Preparation of KBH4 by Electrocatalytic Reduction of KBO2 at a Nano SnO/Ti Electrode

Tin alkoxide complex was prepared by electrochemical dissolution of pure tin in the glycol solution,followed by the direct sol-gel process of electrolyte solution.The SnO sol coated on pure titanium substrate was calcined at 300 ℃ for 2 h in a muffle furnace.The electro-catalytic reduction performance of nano SnO/Ti electrode was investigated in the 0.3~1.2 mol/L KOH+0.2~0.8 mol/L KBO2 solution.The main factors of electro-catalytic reduction of KBO2 such as KBO2 and KOH concentrations and so on were studied.The monodisperse structure and the diameter of nano SnO/Ti electrode were observed by XRD and TEM.The results show that the nano SnO uniformly dispersed on the electrode surface.The electro-catalytic reduction performance of nano SnO/Ti electrode is stable.A yield of 16.9% and a current efficiency of 29.2% were respectively obtained.