Development of Highly Sensitive Iron (III) Oxide Thin Film for Acetone Sensing

Nahid, Mohd; Saini, Vikas; Bhargava, Jitendra; Sharma, Ashok K.; Agarwal, Ajay; Goyal, Vinay K.; Prajesh, Rahul

doi:10.1109/indicon47234.2019.9028926

Cited by 1 publication

(1 citation statement)

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“…A hydrogen capacitor nanosensor-based metal oxide semiconductor has been reported by Behzadi pour's group; the palladium nanoparticles sensor shows excellent hydrogen sensing properties in 1%, 2%, and 4% hydrogen concentration and at 100 kHz frequency at room temperature [28,32]. But the poor cross selectivity of semiconductor gas sensors is a bottleneck, especially for chemically similar molecules (like methanol, formaldehyde, acetone, and ethanol) [28,30,[32][33][34]. Xing et al fabricated In 2 O 3 /Au nanorod sensors to selectively detect acetone at 250 • C and ethanol at 400 • C in exhaled breath [35].…”

Section: Introductionmentioning

confidence: 99%

Highly selective acetone detector based on a separation channel and semiconductor gas sensor

Du¹,

Sun²,

Sun³

et al. 2021

Meas. Sci. Technol.

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Acetone is a biomarker of diabetics. The exhaled acetone concentration of diabetics is higher than that of a healthy person. Semiconductor gas sensors provide an accurate non-invasive detection method for low-concentration breath acetone of diabetics, but the their selectivity presents a drawback. In order to detect the concentration of exhaled acetone accurately from exhaled breath, an acetone detector based on a separation channel and semiconductor gas sensors is presented in this paper. Carbon dioxide, acetone, and ethanol were simulated and separated by a gas chromatography (GC) column in the separation channel. The separated time of carbon dioxide, exhaled acetone, and ethanol are 25 s, 236 s, and 574 s at room temperature, respectively. Carbon dioxide, acetone, and ethanol flow into three gas detection channels with the control of a time-sharing conversion switch. Then, carbon dioxide, acetone, and ethanol can be detected accurately by the semiconductor gas sensors. Exhaled acetone can be measured as low as 1 ppm within 5 min without any interference. A highly selective acetone detector based on GC and semiconductor technology has potential in monitoring and detecting diabetes as well as safe driving in a non-invasive way.

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