摘要
通过电化学扫描法在玻碳电极和导电玻璃基底上组装制备过渡金属铜取代多金属氧酸盐[PCu(H2O)Mo11O39]5-和4代聚酰胺-胺(G4-PAMAM)交替沉积的复合膜.X射线光电子能谱(XPS),原子力显微镜(AFM),循环伏安法(CV)结果表明复合膜成功制备且有好的均匀性.多层膜中的[PCu(H2O)Mo11O39]5-与其在溶液中的氧化还原行为相比,电子转移控制速率不同,该多层膜修饰电极稳定性好,对NO-2的还原及抗坏血酸的氧化具有较好的电催化性能.
The novel multilayer nano-composite films constructed from copper mono-substituted polyoxometalates（[PCu（H2O）Mo11O39]5-） and a generation-4 poly（amidoamine） dendrimer（PAMAM） were fabricated on ITO conductive glass and glassy carbon electrode by electrochemical scanning method.The composition of the multilayer films was characterized by X-ray photoelectron spectra.Atomic force microscopy presented an uniform surface morphology of the multilayer films.The multilayer films were grown gradually and uniformly in the synthesis process as monitored by cyclic voltammetry.The electrochemical properties of [PCu（H2O）Mo11O39]5-in the films were different from those in homogeneous aqueous solution.The multilayer films showed good electrocatalytic activity towards the reduction of NO-2 and oxidation of ascorbic acid（AA）.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2010年第22期2290-2296,共7页
Acta Chimica Sinica
基金
国家自然科学基金(No.20771024)
福建省自然科学基金(No.2008J0142)资助项目
关键词
铜取代多金属氧酸盐
PAMAM
多层膜
电催化
copper-substituted polyoxometalate
PAMAM
multilayer films
electrocatalysis
