Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 21, Issue 34, Pages 12852-12857Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1jm11356a
Keywords
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Funding
- National Natural Science Foundation of China [51002059, 21001046]
- 973 Projects of China [2011CBA00703]
- Research Fund for the Doctoral Program of Higher Education [20090142120059, 20100142120053]
- Natural Science Foundation of Hubei Province [2009CDB326]
- Basic Scientific Research Funds for Central Collges [2010QN045]
- WNLO
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With greatly enhanced surface-to-volume ratios, one-dimensional (1-D) nanostructures are believed to be able to deliver better performance as chemical sensors. In this paper, by using a hydrothermal-annealing process, we reported the synthesis of porous In2O3 nanobelts with a high aspect ratio. By annealing hydrothermally-synthesized single crystalline ultralong InOOH nanobelts, single crystalline porous In2O3 nanobelts with an aspect ratio larger than 100 are obtained on a large scale. The gas sensing properties of the as-prepared porous In2O3 nanobelts were investigated, and they can detect different chemicals (methanol, ethanol, and acetone) down to ppb level. The results also showed that the nanobelts exhibited excellent gas sensing performance in terms of high sensitivity, low detection limit, fast response and recovery times, and sensing selectivity.
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