Issue 3, 2009

Nanostructured Pt decorated graphene and multi walled carbon nanotube based room temperature hydrogen gas sensor

Abstract

Herein, we report the fabrication of hydrogen gas sensors based on noble nanometal decorated one dimensional multi walled carbon nanotubes and two dimensional graphene by a simple drop casting technique, with practical applications in view. Pt decorated functionalized graphene sheets (Pt/f-G) and Pt decorated functionalized multi walled carbon nanotubes (Pt/f-MWNT) were synthesized and employed as hydrogen sensors. Systematic investigation of hydrogen sensing, at a low detection level of 4 vol% hydrogen in air, of (Pt/f-G) reveals a response time comparable to that of (Pt/f-MWNT) but with a two fold increase in the sensitivity at room temperature. These sensors were also found to be stable over repeated cycles of hydrogenation and dehydrogenation.

Graphical abstract: Nanostructured Pt decorated graphene and multi walled carbon nanotube based room temperature hydrogen gas sensor

Article information

Article type
Paper
Submitted
10 4 2009
Accepted
24 8 2009
First published
29 9 2009

Nanoscale, 2009,1, 382-386

Nanostructured Pt decorated graphene and multi walled carbon nanotube based room temperature hydrogen gas sensor

A. Kaniyoor, R. Imran Jafri, T. Arockiadoss and S. Ramaprabhu, Nanoscale, 2009, 1, 382 DOI: 10.1039/B9NR00015A

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