Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 270, Issue -, Pages 247-255Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2018.05.028
Keywords
Bimetal-nanocatalyst; In2O3; Nanosheet; Type 1 diabetes; Acetone
Funding
- National Natural Science Foundation of China [21371070, 21401066, 21401016]
- Natural Science Foundation of Jilin Province [20160101291JC]
- Jilin province science and technology development projects [20170414025GH]
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Noninvasive diagnosis of diabetes, using a biomarker, is an urgent clinical requirement to find and remedy diabetes early. Recently, acetone, a kind of ideal probing molecule, was used to diagnose diabetes which concentration increased greatly in exhaled breath of a Type 1 diabetic patients. However, the selective detection of acetone is difficult at ppb level, especially at a high humidity. In this study, Pt0.3Au0.7-In2O3, decorated with bimetallic catalyst, showed enhanced sensing performance towards trace acetone gas at a low operating temperature of 160 degrees C. In addition, even at high humidity atmosphere (up to 95% RH), its response to 1.8 ppm acetone (Type 1 diabetes patients) is about 44% higher than that of 0.9 ppm (normal human), which can be clearly distinguished for the diagnosis of Type 1 diabetes in a non-invasive and more accurate way. The excellent sensing performance indicates that bimetallic Pt-Au decoration is an effect way to improve the acetone sensing ability of In2O3. (C) 2018 Elsevier B.V. All rights reserved.
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