Issue 22, 2013
From the journal:

Physical Chemistry Chemical Physics

Morphology dependent oxygen reduction activity of titanium carbide: bulk vs. nanowires†

Vankayala Kiran,a   Kancharlapalli Srinivasub  and  Srinivasan Sampath*a  

* Corresponding authors

a Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
E-mail: sampath@ipc.iisc.ernet.in
Fax: +91 80 23600085
Tel: +91 80 22933315

b Theoretical Chemistry Section, Bhabha Atomic Research Centre, Mumbai 400085, India

Abstract

Titanium carbide (TiC) possesses fascinating properties like high electrical conductivity and high mechanical strength coupled with high corrosion resistance and stability in acidic and alkaline environments. The present study demonstrates the tunability of mechanistic aspects of oxygen reduction reaction (ORR) using TiC nanostructures. One dimensional TiC nanostructures (TiC-NW) have been synthesized using a simple, hydrothermal method and used as a catalyst for ORR. Shape dependent electroactivity is demonstrated by comparing the activity of TiC-NW with its bulk counterparts. Comparative studies reveal higher ORR activities in the case of 1D TiC-NW involving ∼4 electrons showing efficient reduction of molecular oxygen. Excellent stability and high methanol tolerance with good selectivity for ORR is reported.

Graphical abstract: Morphology dependent oxygen reduction activity of titanium carbide: bulk vs. nanowires

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Article information

DOI
https://doi.org/10.1039/C3CP50731A
Article type
Paper
Submitted
18 Feb 2013
Accepted
27 Mar 2013
First published
03 Apr 2013

Phys. Chem. Chem. Phys., 2013,15, 8744-8751

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Morphology dependent oxygen reduction activity of titanium carbide: bulk vs. nanowires

V. Kiran, K. Srinivasu and S. Sampath, Phys. Chem. Chem. Phys., 2013, 15, 8744 DOI: 10.1039/C3CP50731A

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