Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 696, Issue -, Pages 655-662Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.11.298
Keywords
In2O3 nanowire; TiO2 nanoparticle; Diabetes diagnosis; Acetone sensor
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Funding
- Sejong University Research Grant
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TiO2 nanoparticles functionalized In2O3 nanowires are synthesized by spin coating and a thermal annealing process using In2O3 nanowires synthesized by VLS mechanism and hydrothermally synthesized TiO2 nanoparticles. This sensor exhibits high performance acetone gas detection at low temperatures and ethanol gas detection at high temperatures. Sub-ppm scale acetone gas detection is important when diagnosing diabetes since exhaled breath contains approximately 1.8-10 ppm of acetone gas for diabetes sufferers, whereas it contains under 0.8 ppm of acetone gas for those without diabetes. Some kinds of sensing factors are controlled to enhance the sensing performance of acetone sensors using TiO2 nanoparticles functionalized In2O3 nanowires. In this research, we fabricate an acetone sensor which has good selectivity and responses, and research its sensing mechanisms. (C) 2016 Elsevier B.V. All rights reserved.
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