Nanocomposite multilayer films containing Dawson-type polyoxometalate and cationic phthalocyanine: Fabrication, characterization and bifunctional electrocatalytic properties

• Published in: Thin solid films Vol. 515; no. 13; pp. 5490 - 5497
• Main Authors: Jin, Yana, Xu, Lin, Zhu, Liande, An, Wenjia, Gao, Guanggang
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 07.05.2007; Elsevier Science
• Subjects: Alcian blue; Bifunctional electrocatalysis; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Methods of deposition of films and coatings; film growth and epitaxy; Multilayer films; Nanoscale materials and structures: fabrication and characterization; Other topics in nanoscale materials and structures; Physics; Polyoxometalate; Theory and models of film growth; Polyoxometalate; Multilayer films; Bifunctional electrocatalysis; Alcian blue; Hybrid material; Glass; Tin oxides; Cyclic voltammetry; Multilayers; Nanocomposites; Growth mechanism; Ultraviolet visible spectrum; Oxidation; Indium oxides; Nanostructured materials; Phthalocyanines; Organic compounds; X-ray photoelectron spectra
• ISSN: 0040-6090; 1879-2731
• DOI: 10.1016/j.tsf.2006.12.175

Water-soluble cationic phthalocyanine — Alcian blue (AB) and 2:18 tungstophosphate anions (P 2W 18) were alternately deposited on a -aminopropyltriethoxysilane-modified indium tin oxide-coated glass electrodes or quartz substrate through a layer-by-layer method. The resulting organic-inorganic hybrid films were characterized by ultraviolet-visible absorption spectra, cyclic voltammetry and X-ray photoelectron spectra. A stepwise and regular deposition of AB and P 2W 18 in both pure water and 0.01 M poly(styrenesulfonate) (PSS) were investigated. Differences in linear growth were observed between pure water and 0.01 M PSS-based solutions. The voltammetric curves show well-defined anodic and cathodic peaks, which is indicative of both electrocatalytic oxidation and reduction of nitrite.