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Issue 26, 2012
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Highly sensitive room-temperature CO gas sensors: Pt and Pd nanoparticle-decorated In2O3 flower-like nanobundles

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Abstract

We discovered a promising room-temperature CO sensing capability of Pt or Pd nanoparticle-functionalized In2O3 flower-like nanobundles (NBs) composed of parallel nanoparticle-chains. The highly branched In2O3 flower-like NBs synthesized through the process of hydrolysis of InCl3 in NaBH4 aqueous solution and the subsequent heat treatment provided an extremely porous matrix required for high-performance gas sensors. The Pt and Pd nanoparticles uniformly deposited on the In2O3 NBs evidently play a key role in enhancing the sensitivity and response, and most importantly lowering the operating temperature to 25 °C for the detection of CO gas. The present innovative hybrid nanostructures offer a potential platform for room-temperature oxide-based gas nanosensors. Moreover, the resulting sensing behaviours lead to a better understanding of using and designing such nanosensors for a number of gas sensory applications.

Graphical abstract: Highly sensitive room-temperature CO gas sensors: Pt and Pd nanoparticle-decorated In2O3 flower-like nanobundles

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Publication details

The article was received on 25 Feb 2012, accepted on 25 Apr 2012 and first published on 26 Apr 2012


Article type: Paper
DOI: 10.1039/C2JM31180A
J. Mater. Chem., 2012,22, 13204-13208

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    Highly sensitive room-temperature CO gas sensors: Pt and Pd nanoparticle-decorated In2O3 flower-like nanobundles

    H. Lai and C. Chen, J. Mater. Chem., 2012, 22, 13204
    DOI: 10.1039/C2JM31180A

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