Synthesis of Tungsten Oxide Nanorods by the Controlling Precipitation Reaction: Application for Hydrogen Evolution Reaction on a WO3 Nanorods/Carbon Nanotubes Composite Film Modified Electrode. Issue 4 (3rd January 2013)

• Record Type: Journal Article
• Authors: Chekin, Fereshteh; Bagheri, Samira; Bee Abd Hamid, Sharifah
• Is Part Of: Journal of the Chinese Chemical Society. Volume 60:Issue 4(2013:Apr.)
• Page Start: 447
• Page End: 451
• Publication Date: 2013-01-03
• Subjects: Chemistry -- Periodicals; Electronic journals; 540.5
• DOI: 10.1002/jccs.201200298
• Languages: English
• ISSNs: 0009-4536

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Tungsten trioxide nanorods (WO₃) were prepared by controlling the precipitation reaction of sodium tungstate dehydrates solution and hydrothermal process. The synthesized tungsten trioxide nanorods have been characterized by X‐ray diffraction (XRD), energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), cyclic voltammetry (CV) and linear sweep voltammetry (LSV). Electrochemical activity for hydrogen evolution reaction (HER) on WO₃ nanorods / carbon nanotube (WO₃/CNT) composite electrocatalyst was first studied in acid solution (0.1 M H₂SO₄) at room temperature. The overall experimental results revealed that the electrocatalytic activity for HER on WO₃/CNT is two order magnitude higher than those obtained with WO₃ nanorods and is four times than in the case of commercial WO₃ in 0.1 M H₂SO₄. On the other hand, the kinetic reaction mechanisms were discussed on WO₃/CNT electrocatalysts in acid solution for HER. However, the rate‐determining step carries through Tafel reaction on commercial WO₃, CNT, WO₃ nanorods and WO₃/CNT electrocatalysts in acidic solution was introduced.</p> </abstract>