RuO_2/TiO_2纳米薄膜的新构建及对CO_2的电催化还原  

A Novel Fabrication of RuO_2/TiO_2 Nanofilms for Electrocatalytic Reduction of CO_2

作　　者：张莉娜[1] 王金意[1] 张涵轩[1] 蔡文斌[1] 

机构地区：[1]复旦大学化学系上海分子催化与功能材料重点实验室,上海200433

出　　处：《化学学报》2010年第6期590-593,共4页Acta Chimica Sinica

基　　金：国家自然科学基金(No.20873031);上海市基础研究重点(No.08JC1402000)资助项目

摘　　要：在旋涂有球状纳米TiO2薄膜的导电玻璃(ITO)基底上采用循环伏安法(CV)电沉积RuO2作为电催化还原CO2的阴极.采用场发射扫描电子显微镜(FE-SEM)表征了RuO2/TiO2纳米薄膜的形貌,并应用近稳态电位扫描法和计时电流法(i～t)研究了薄膜的电催化CO2性能.结果表明所构建的RuO2/TiO2薄膜中纳米粒子大小均匀、排列致密,且较传统热分解法所得催化剂有更好的电催化性能.RuO2 electrodeposited on spherical-TiO2 nanoparticles-spin-coated ITO substrate by using cyclic voltammetry （CV） was used as the cathode for electrocatalytic reduction of CO2. The surface morphology of the as-prepared film was characterized by field emission scanning electron microscopy （FE-SEM） and its electrocatalytic performance was assessed by quasi-steady-state potentiodynamics and chronoamperometry （i～t）. The results show that the as-prepared RuO2/TiO2 nanofilm consists of uniform and compact nanoparticles, exhibiting superior electrocatalytic activity and stability for electrochemical reduction of CO2 as compared to that prepared by traditional thermal decomposition.

关 键 词：RuO2/TiO2纳米薄膜 循环伏安法 电还原CO2 电催化 

分 类 号：O643.3[理学—物理化学]