Cobalt Doped Titanium Dioxide Nanoparticles: Synthesis, Characterization and Electrocatalytic Study. Issue 6 (1st April 2014)

• Record Type: Journal Article
• Authors: Bagheri, Samira; Chekin, Fereshteh; Hamid, Sharifah Bee Abd
• Is Part Of: Journal of the Chinese Chemical Society. Volume 61:Issue 6(2014:Jun.)
• Page Start: 702
• Page End: 706
• Publication Date: 2014-04-01
• Subjects: Chemistry -- Periodicals; Electronic journals; 540.5
• DOI: 10.1002/jccs.201300486
• Languages: English
• ISSNs: 0009-4536

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>In this work, green synthesis of cobalt doped titanium dioxide (Co‐TiO₂) has been carried out in aqueous medium using gelatin. The Co‐TiO₂ particles have been characterized using transmission electron microscopy (TEM), X‐ray diffraction (XRD), energy dispersive X‐ray (EDAX), FT‐IR spectroscopy and voltammetry techniques. XRD results show pure Co‐TiO₂ and TiO₂ powders with average crystallite size about 12 nm and 15 nm, respectively. Co loaded in TiO₂ hasn't influence crystalline structure. Moreover, efficient Co‐TiO₂‐based anode was fabricated by casting of the Co‐TiO₂ solution on glassy carbon electrode (Co‐TiO₂/GCE). The electrocatalysis of oxygen evolution reaction (OER) at Co‐TiO₂/GCE has been examined using linear scanning voltammetry (LSV) in alkaline media. The OER is significantly enhanced at Co‐TiO₂/GCE, as demonstrated by a negative shift in the LSV curve at the Co‐TiO₂/GCE compared to that obtained at the unmodified one. The value of energy saving of oxygen gas at a current density of 5 mA cm⁻² is 12.6 kW h kg⁻¹. The low cost as well as the marked stability of the modified electrode make it promising candidate in industrial water electrolysis process.</p> </abstract>