Acetone gas detection using TiO2 nanoparticles functionalized In2O3 nanowires for diagnosis of diabetes

Park, Sunghoon

doi:10.1016/j.jallcom.2016.11.298

Cited by 104 publications

(35 citation statements)

References 37 publications

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“…Its gas-sensing properties are highly related to its composition, hence many scientific groups are presently working on this material with special emphasis on its different nanostructures. Recently, Park [ 53 ] has presented the investigation results of TiO 2 nanoparticles functionalized In 2 O 3 nanowires for exhaled acetone measurements. The measurements were carried out as a function of 0.1, 0.2, 0.5, 1, 2, 5, and 10 ppm acetone at 250 °C and the responses (R g /R a ) equaled 4.07, 4.83, 6.17, 8.8, 12.25, 20.55, and 33.34, respectively.…”

Section: Major Achievements On Acetone Detectionmentioning

confidence: 99%

“…The measurements were carried out as a function of 0.1, 0.2, 0.5, 1, 2, 5, and 10 ppm acetone at 250 °C and the responses (R g /R a ) equaled 4.07, 4.83, 6.17, 8.8, 12.25, 20.55, and 33.34, respectively. The detection mechanism was clearly discussed, which makes this material very attractive for commercial use [ 53 ].…”

Section: Major Achievements On Acetone Detectionmentioning

confidence: 99%

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Sensors for Enhanced Detection of Acetone as a Potential Tool for Noninvasive Diabetes Monitoring

Rydosz

2018

Sensors

135

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Measurement of blood-borne volatile organic compounds (VOCs) occurring in human exhaled breath as a result of metabolic changes or pathological disorders is a promising tool for noninvasive medical diagnosis, such as exhaled acetone measurements in terms of diabetes monitoring. The conventional methods for exhaled breath analysis are based on spectrometry techniques, however, the development of gas sensors has made them more and more attractive from a medical point of view. This review focuses on the latest achievements in gas sensors for exhaled acetone detection. Several different methods and techniques are presented and discussed as well.

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Section: Major Achievements On Acetone Detectionmentioning

confidence: 99%

Section: Major Achievements On Acetone Detectionmentioning

confidence: 99%

Sensors for Enhanced Detection of Acetone as a Potential Tool for Noninvasive Diabetes Monitoring

Rydosz

2018

Sensors

135

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“…In the meanwhile, MZO sensors in the interlocking p+n FET cannot be sensitive to the gas exhaled by the normal people. On the contrary, it outputs a high voltage signal (~4.0 V) exposed to the gas exhaled by the diabetes patients (generally 1.8–10 ppm [ 49 ]), in favor of the widespread and low cost screening of the diabetes.…”

Section: Resultsmentioning

confidence: 99%

Transilient Response to Acetone Gas Using the Interlocking p+n Field-Effect Transistor Circuit

Zhou

Wang

et al. 2018

Sensors

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Low concentration acetone gas detection is significantly important for diabetes diagnosis as 1.8–10 ppm of acetone exists in exhaled breath from diabetes patients. A new interlocking p+n field-effect transistor (FET) circuit has been proposed for Mn-doped ZnO nanoparticles (MZO) to detect the acetone gas at low concentration, especially close to 1.8 ppm. It is noteworthy that MZO in this interlocking amplification circuit shows a low voltage signal of <0.3 V to the acetone <2 ppm while it displays a transilient response with voltage signal >4.0 V to >2 ppm acetone. In other words, the response to acetone from 1 ppm to 2 ppm increases by ~1233%, which is competent to separate diabetic patients from healthy people. Moreover, the response to 2 ppm acetone is hardly influenced by high relative humidity of 85%. In the meanwhile, MZO in this interlocking circuit possesses a high acetone selectivity compared to formaldehyde, acetaldehyde, toluene and ethanol, suggesting a promising technology for the widespread qualitative screening of diabetes. Importantly, this interlocking circuit is also applicable to other types of metal oxide semiconductor gas sensors. The resistance jump of p- and n-FETs induced by the change of their gate voltages is deemed to make this interlocking circuit produce the transilient response.

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“…There is an urgent demand for developing high-quality gas-sensitive materials accordingly. Among the various gas-sensitive materials, resistive-type nanostructured metal oxide semiconductors (MOS), such as TiO 2 , In 2 O 3 , SnO 2 , ZnO, CuO, and WO 3 [ 4 , 5 , 6 , 7 , 8 , 9 ] have been most attractive in terms ofNO 2 detection because of their high sensitivity, simplicity, and low cost [ 10 ]. WO 3 , as a typical n-type semiconductor with stable physicochemical properties, is promising for the detection of NO 2 in recent years due to its excellent sensitivity and selectivity to NO 2 compared with other gases.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Functionalization of Porous Silicon/WO3 Nanorods with Pd Nanoparticles and Their Enhanced NO2-Sensing Performance at Room Temperature

Xia

Zhao

et al. 2018

Materials

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The decoration of noble metal nanoparticles (NPs) on the surface of metal oxide semiconductors to enhance material characteristics and gas-sensing performance has recently attracted increasing attention from researchers worldwide. Here, we have synthesized porous silicon (PS)/WO3 nanorods (NRs) functionalized with Pd NPs to enhance NO2 gas-sensing performance. PS was first prepared using electrochemical methods and worked as a substrate. WO3 NRs were synthesized by thermally oxidizing W film on the PS substrate. Pd NPs were decorated on the surface of WO3 NRs via in-situ reduction of the Pd complex solution by using Pluronic P123 as the reducing agent. The gas-sensing characteristics were tested at different gas concentrations and different temperatures ranging from room temperature to 200 °C. Results revealed that, compared with bare PS/WO3 NRs and Si/WO3 NRs functionalized with Pd NPs, the Pd-decorated PS/WO3 NRs exhibited higher and quicker responses to NO2, with a detection concentration as low as 0.25 ppm and a maximum response at room temperature. The gas-sensing mechanism was also investigated and is discussed in detail. The high surface area to volume ratio of PS and the reaction-absorption mechanism can be explained the enhanced sensing performance.

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Acetone gas detection using TiO2 nanoparticles functionalized In2O3 nanowires for diagnosis of diabetes

Cited by 104 publications

References 37 publications

Sensors for Enhanced Detection of Acetone as a Potential Tool for Noninvasive Diabetes Monitoring

Sensors for Enhanced Detection of Acetone as a Potential Tool for Noninvasive Diabetes Monitoring

Transilient Response to Acetone Gas Using the Interlocking p+n Field-Effect Transistor Circuit

Effect of the Functionalization of Porous Silicon/WO3 Nanorods with Pd Nanoparticles and Their Enhanced NO2-Sensing Performance at Room Temperature

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