Cobalt hexacyanoferrate adsorbed on TiO2 nanoparticles and their modified glassy carbon electrodes for electrocatalytic oxidation and amperometric determination of hydrazine

Alexander Marimuthu; Saravanan Arunagiri; Arjun Pandian; Pandian Kannaiyan

doi:10.1007/s44211-023-00317-5

Cobalt hexacyanoferrate adsorbed on TiO₂ nanoparticles and their modified glassy carbon electrodes for electrocatalytic oxidation and amperometric determination of hydrazine

Anal Sci. 2023 Jul;39(7):1081-1088. doi: 10.1007/s44211-023-00317-5. Epub 2023 Mar 27.

Authors

Alexander Marimuthu^{1

2}, Saravanan Arunagiri³, Arjun Pandian⁴, Pandian Kannaiyan⁵

Affiliations

¹ Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai, Tamil Nadu, 600025, India. chemalexander802@gmail.com.
² Division of Research and Innovation, Department of Biotechnology, Saveetha School of Engineering (SSE), Saveetha Institute of Medical and Technical Sciences (SIMATS), Thandalam, Chennai, Tamil Nadu, 602 105, India. chemalexander802@gmail.com.
³ Department of Electrical and Electronics Engineering, SMK Fomra Institute of Technology, Fomra Nagar, Kelambakkam, Chennai, Tamil Nadu, 603 103, India. saravanandr2006@gmail.com.
⁴ Division of Research and Innovation, Department of Biotechnology, Saveetha School of Engineering (SSE), Saveetha Institute of Medical and Technical Sciences (SIMATS), Thandalam, Chennai, Tamil Nadu, 602 105, India.
⁵ Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai, Tamil Nadu, 600025, India.

PMID: 36972007
DOI: 10.1007/s44211-023-00317-5

Abstract

TiO₂ nanoparticles (NPs) were prepared at low temperature by stepwise hydrolysis of TiF₄ in aqueous solution at 100 °C. TiO₂ NPs were obtained at low temperature as small size particles. Subsequently, cobalt hexacyanoferrate (CoHCF) is adsorbed on the surface of the TiO₂ NPs through the ion exchange method. This method is simple and forms TiO₂/CoHCF nanocomposite. TiO₂ interacts with KCo[Fe(CN)₆] which leads to the formation of TiO(OH)-Co bond; this is confirmed by a shift in the XPS analysis. The prepared TiO₂/CoHCF nanocomposite has been characterized by FT-IR spectrum, X-ray photoelectron spectra (XPS), scanning electron microscope (SEM), high resolution transmittance electron microscope (HRTEM) and energy dispersive X-ray pattern (EDX). The TiO₂/CoHCF nanocomposite is modified by the glassy carbon electrode (GCE) as an excellent electrocatalyst for the oxidation of hydrazine and is also used for the amperometric determination of hydrazine.

Keywords: Cobalt hexacyanoferrate; Electro catalyst and Amperometry; Hydrazine oxidation; Titanium dioxide.