Investigations into the electrochemical, surface, and electrocatalytic properties of the surface-immobilized polyoxometalate, TBA3K[SiW10O36(PhPO)2]

Mustansara Yaqub; Shahzad Imar; Fathima Laffir; Gordon Armstrong; Timothy McCormac

doi:10.1021/am5017864

Investigations into the electrochemical, surface, and electrocatalytic properties of the surface-immobilized polyoxometalate, TBA3K[SiW10O36(PhPO)2]

ACS Appl Mater Interfaces. 2015 Jan 21;7(2):1046-56. doi: 10.1021/am5017864. Epub 2015 Jan 6.

Authors

Mustansara Yaqub¹, Shahzad Imar, Fathima Laffir, Gordon Armstrong, Timothy McCormac

Affiliation

¹ Electrochemistry Research Group, Department of Applied Science, Dundalk Institute of Technology , Dundalk, County Louth, Ireland.

PMID: 25478678
DOI: 10.1021/am5017864

Abstract

Surface anchoring of an organic functionalized POM, TBA3K[SiW10O36(PhPO)2] was carried out by two methods, the layer-by-layer (LBL) assembly technique by employing a pentaerythritol-based ruthenium(II) metallodendrimer as a cationic moiety and also by entrapping the POM in a conducting polypyrrole film. The redox behavior of the constructed films was studied by using cyclic voltammetry and electrochemical impedance spectroscopy. The surface morphologies of the constructed multilayers were examined by scanning electron microscopy and atomic force microscopy. X-ray photoelectron spectroscopy was conducted to confirm the elements present within the fabricated films. The multilayer assembly was also investigated for its catalytic efficiency towards the reduction of nitrite.

Keywords: electrocatalysis; layer-by-layer; nitrite; polyoxometalate; polypyrrole.

Publication types

Research Support, Non-U.S. Gov't