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

Nanoscale
Adarsh KaniyoorS Ramaprabhu

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.

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Citations

May 20, 2011·Nano Letters·Harindra VedalaAlexander Star
Aug 25, 2010·The Analyst·Douglas R Kauffman, Alexander Star
Aug 20, 2014·Nanoscale·Jie YingBao-Lian Su
Nov 8, 2011·Nanoscale·Xiaochen DongPeng Chen
Dec 15, 2015·Advanced Materials·Jun ZhangNicola Pinna
Feb 19, 2016·Nanoscale·Changkun DongDetian Li
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Mar 2, 2016·Nanoscale·Vitaly V Chaban, Oleg V Prezhdo
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Jun 26, 2018·Chemical Society Reviews·Cosimo AnichiniPaolo Samorì
Nov 11, 2014·Mikrochimica Acta·Ajeet KaushikMadhavan Nanir
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Jan 1, 2016·Nanomaterials·Sung-Ho ShinJunghyo Nah
Oct 23, 2019·Sensors·Juan Casanova-CháferEduard Llobet

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