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Electrochemical properties of polyoxometalate composite materials containing multiple redox centers

LaSalle Swenson and M. Ishaque Khan

Illinois Institute of Technology, Chicago, USA

 

E-mail: khan@iit.edu

Abstract: We used cyclic voltammetry (CV) to study the electrochemical redox properties of a series of solid-state polyoxometalate composite hybrid materials supported on indium tin oxide-coated glass. The hybrid materials are composed of the organofunctionalized polyoxocationic species, ([{ ext{NaV}}^{ ext{IV}}_{6} { ext{O}}_{ 6}){(OCH2CH2)2N(CH2CH2OH)}6]+, in combination with the Keggin-structure polyoxoanions (PW12O40)3−, (SiW12O40)4−, or (SiMo12O40)4−. CV results show that the hybrid materials are electrochemically active, with redox events attributable to their electrochemically active molecular constituents. Strong chemical–environmental effects are also observed.

Keywords: Polyoxometalates ; Organofunctionalized Anderson structure ; Cyclic voltammetry ; Redox properties ; Composites 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-019-00815-9

 

Chemical Papers 73 (10) 2611–2617 (2019)

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