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Preparation and Gas Sensing Properties of In2O3/Au Nanorods for Detection of Volatile Organic Compounds in Exhaled Breath
Open accessAbstract
A series of In 2 O 3/Au nanorods (NRs) were fabricated and characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), X–ray diffractometer (XRD) and X–ray photoelectron spectroscopy (XPS). The length to diameter ratios of In 2 O 3/Au NRs was periodically modulated in the range of 2.9–4.5 through controlling the initial content of indium salt and reaction time. Their gas sensing properties to volatile organic compounds (VOCs) were carefully studied and then applied in exhaled breath detection. The results demonstrate that In 2 O 3/Au NRs gas sensor can effectively detect acetone at 250 °C and ethanol at 400 °C. The corresponding actual detection limit is as low as 0.1 ppm to acetone and 0.05 ppm to ethanol, respectively. Moreover, by using humidity compensation method, In 2 O 3/Au NRs gas sensor can clearly distinguish the acetone and ethanol biomarkers in human breath. The main reason of the enhanced gas sensing properties was attributed to the “spillover effects” between Au and In 2 O 3 NRs. The excellent sensing performance indicates that In 2 O 3/Au NRs is a promising functional material to actual application in monitoring and detecting diabetes and safe driving area in a noninvasive and more accurate way.
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Cites
Exhaled breath condensate: methodological recommendations and unresolved questions
Horváth, I., Hunt, J., & Barnes, P. J. (2005) · European Respiratory Journal · doi:10.1183/09031936.05.00029705 · Cited by 1,284
Sensors for Breath Testing: From Nanomaterials to Comprehensive Disease Detection
Konvalina, G., & Haick, H. (2014) · Accounts of Chemical Research · doi:10.1021/ar400070m · Cited by 561
Cited by
Li, G., Cheng, Z., Xiang, Q., Yan, L., Wang, X., & Xu, J. (2019) · Sensors and Actuators B: Chemical · doi:10.1016/j.snb.2018.09.117 · Cited by 422
Functional gas sensing nanomaterials: A panoramic view
Malik, R., Tomer, V. K., Mishra, Y. K., & Lin, L. (2020) · Applied Physics Reviews · doi:10.1063/1.5123479 · Cited by 410
Metadata
- Authors
- Xing, R., Xu, L., Song, J., Zhou, C., Li, Q., Liu, D., & Wei Song, H.
- Venue
- Scientific Reports
- Published
- 2015-06-01
- Volume
- 5
- Issue
- 1
- Pages
- 10717-10717
- ISSN
- 2045-2322 (ISSN-L)
- OpenAlex
- W2258944824
- Cited by
- 211
- References
- 2
- FWCI
- 12.99
- Type
- journal article
- Language
- en
- Open access
- gold
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- Xing, R., Xu, L., Song, J., Zhou, C., Li, Q., Liu, D., & Wei Song, H. (2015). Preparation and Gas Sensing Properties of In2O3/Au Nanorods for Detection of Volatile Organic Compounds in Exhaled Breath. Scientific Reports. https://doi.org/10.1038/srep10717
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