Jump to main content
Jump to site search


Novel combustion-carbonization preparation of mesoporous tungsten carbide as a highly active catalyst for oxygen reduction

Author affiliations

Abstract

Tungsten carbide (WC) powder was synthesized by a novel combustion-carbonization method. The structure and morphology of WC powder was characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The results show that a pure phase of WC powder can be obtained at 850 °C, and the particle size of the WC powder is about 30–100 nm. Compared with the conventional calcination-carbonization method, the combustion-carbonization method can obtain WC powder with a larger surface area and carbon coating structure. The results of cyclic voltammetry (CV) and linear sweep voltammetry (LSV) measurement show that the WC catalyst exhibits a defined ORR activity in an alkaline solution and its oxygen reduction peak potential, peak current density, and half-wave potential are −0.36 V, 0.5 mA, and −0.31 V, respectively. The preceding test results proved that WC prepared by this facile method has excellent oxygen reduction catalytic activity.

Graphical abstract: Novel combustion-carbonization preparation of mesoporous tungsten carbide as a highly active catalyst for oxygen reduction

Back to tab navigation

Article information


Submitted
15 Oct 2019
Accepted
01 Feb 2020
First published
03 Feb 2020

New J. Chem., 2020, Advance Article
Article type
Paper

Novel combustion-carbonization preparation of mesoporous tungsten carbide as a highly active catalyst for oxygen reduction

Y. Gao, J. Cheng, P. Chen, B. Wei, D. Gao and D. Xu, New J. Chem., 2020, Advance Article , DOI: 10.1039/C9NJ05145G

Social activity

Search articles by author

Spotlight

Advertisements