Z. Naturforsch. 2012,
67b, 673 – 677
doi:10.5560/ZNB.2012-0102
Fabrication and Properties of a Nanocomposite Multilayer Film Based on a Polyoxometalate
Jihong
Liu1,2,
Tao
Dong2,
Shuang
Li1,
Huiyuan
Ma1, and
Bo
Liu1
1 Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, P. R. China
2 Chemistry Department, Harbin Normal University, Harbin 150025, P. R. China
Received April 12, 2012 / published online July 18, 2012
A nanocomposite multilayer film based on a polyoxometalate Na16[P4W30Mn4(H2O)2O112]· xH2O (Mn4P4W30) was fabricated by the layer-by-layer self-assembly method. It was characterized by UV/Vis spectra and atomic force microscopy (AFM). The electrochromic and electrocatalytic properties were explored using chronoamperometry (CA), UV/Vis spectroscopy and cyclovoltammetry (CV). The attractable feature is a color change of the film by the reduction of the polyoxometalate at different potentials. The film also exhibits good electrocatalytic activity toward the reduction of IO3−.
Key words: Electrochromic Behavior, Layer-by-layer Deposition, Polyoxometalate, Electrocatalytis