An investigation of GO-SnO2-TiO2 ternary nanocomposite for the detection of acetone in diabetes mellitus patient’s breath

Kalidoss, Ramji; Snekhalatha, U.; Sivalingam, Yuvaraj

doi:10.1016/j.apsusc.2017.12.090

Cited by 66 publications

(32 citation statements)

References 44 publications

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“…The highest responses were obtained at 380 °C, for 20 ppm acetone was around 11 and limit of detection was measured around 87 ppb [ 43 ]. Kalidoss et al [ 44 ] have presented the investigation results of GO-SnO 2 -TiO 2 ternary nanocomposite for acetone in diabetes mellitus patients’ breath. The GO-SnO 2 -TiO 2 sensor exhibits superior gas sensing performance towards acetone in the range of 0.25 ppm to 30 ppm at 200 °C, under exposure to 5 ppm the response was 60 (R a /R g ) [ 44 ].…”

Section: Major Achievements On Acetone Detectionmentioning

confidence: 99%

“…Kalidoss et al [ 44 ] have presented the investigation results of GO-SnO 2 -TiO 2 ternary nanocomposite for acetone in diabetes mellitus patients’ breath. The GO-SnO 2 -TiO 2 sensor exhibits superior gas sensing performance towards acetone in the range of 0.25 ppm to 30 ppm at 200 °C, under exposure to 5 ppm the response was 60 (R a /R g ) [ 44 ]. Tomer et al [ 45 ] have presented the acetone detection using an indium loaded WO 3 /SnO 2 nanohybrid sensor.…”

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

136

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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

136

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“…Finally, in Kalidoss's et al work [79], a ternary composite based on SnO 2 -TiO 2 -GO materials was reported. The gas sensing properties of the as-prepared GO-SnO 2 -TiO 2 nanocomposites films were investigated at the optimal temperature of 200 • C. The ternary compound exhibited superior gas sensing performances towards acetone in the range 0.25-30 ppm and was also an excellent candidate for the selective detection of this analyte in diabetes mellitus breath.…”

Section: Graphene Oxide-mos Gas Sensorsmentioning

confidence: 94%

Breakthroughs in the Design of Novel Carbon-Based Metal Oxides Nanocomposites for VOCs Gas Sensing

Pargoletti

Cappelletti

2020

Nanomaterials

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Nowadays, the detection of volatile organic compounds (VOCs) at trace levels (down to ppb) is feasible by exploiting ultra-sensitive and highly selective chemoresistors, especially in the field of medical diagnosis. By coupling metal oxide semiconductors (MOS e.g., SnO2, ZnO, WO3, CuO, TiO2 and Fe2O3) with innovative carbon-based materials (graphene, graphene oxide, reduced graphene oxide, single-wall and multi-wall carbon nanotubes), outstanding performances in terms of sensitivity, selectivity, limits of detection, response and recovery times towards specific gaseous targets (such as ethanol, acetone, formaldehyde and aromatic compounds) can be easily achieved. Notably, carbonaceous species, highly interconnected to MOS nanoparticles, enhance the sensor responses by (i) increasing the surface area and the pore content, (ii) favoring the electron migration, the transfer efficiency (spillover effect) and gas diffusion rate, (iii) promoting the active sites concomitantly limiting the nanopowders agglomeration; and (iv) forming nano-heterojunctions. Herein, the aim of the present review is to highlight the above-mentioned hybrid features in order to engineer novel flexible, miniaturized and low working temperature sensors, able to detect specific VOC biomarkers of a human’s disease.

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“…Furthermore, the effect of Ti-content was also investigated by FTIR and Raman spectroscopies (Figure 1c,d). Notably, Figure 1c reports the non-linear, very rapid transition from SnO 2 (~500 cm −1 , ascribable to Sn-O stretching [46]) to TiO 2 (~470 cm −1 , ascribable to O-Ti-O stretching [38]) infrared modes, which is already almost accomplished in the 32:1 Sn 0.71 Ti 0.29 O 2 /GO sample. According to Tricoli et al [37], even 9% of Ti-doping into SnO 2 matrix can affect the ionic transport in the crystal, the molecular bond length and, thus, the surface adsorption properties/sensing performances.…”

Section: Nanostructured Sn X Ti 1−x O 2 /Go Solid Solutions: Compositmentioning

confidence: 95%

“…In this context and with our promising results already reported on the synergistic effect between p-type MOS and n-type graphene oxide (GO), especially in reducing the operating temperature [27,35], we believe that the Sn x Ti 1−x O 2 /GO solid solution system may be an efficient active material with even improved selectivity. Indeed, there are already several papers [36][37][38][39][40] dealing with both synthesis and successful application of SnO 2 -TiO 2 mixed oxides as either photocatalysts or sensing materials. Tricoli et al [37] reported the preparation of a SnO 2 -TiO 2 solid solution with limited cross-sensitivity towards humidity, thanks to the replacement of some tin cations by titanium ones.…”

Section: Introductionmentioning

confidence: 99%

Exploring SnxTi1−xO2 Solid Solutions Grown onto Graphene Oxide (GO) as Selective Toluene Gas Sensors

et al. 2020

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The major drawback of oxide-based sensors is the lack of selectivity. In this context, Sn x Ti 1−x O 2 /graphene oxide (GO)-based materials were synthesized via a simple hydrothermal route, varying the titanium content in the tin dioxide matrix. Then, toluene and acetone gas sensing performances of the as-prepared sensors were systematically investigated. Specifically, by using 32:1 SnO 2 /GO and 32:1 TiO 2 /GO, a greater selectivity towards acetone analyte, also at room temperature, was obtained even at ppb level. However, solid solutions possessing a higher content of tin relative to titanium (as 32:1 Sn 0.55 Ti 0.45 O 2 /GO) exhibited higher selectivity towards bigger and non-polar molecules (such as toluene) at 350 • C, rather than acetone. A deep experimental investigation of structural (XRPD and Raman), morphological (SEM, TEM, BET surface area and pores volume) and surface (XPS analyses) properties allowed us to give a feasible explanation of the different selectivity. Moreover, by exploiting the UV light, the lowest operating temperature to obtain a significant and reliable signal was 250 • C, keeping the greater selectivity to the toluene analyte. Hence, the feasibility of tuning the chemical selectivity by engineering the relative amount of SnO 2 and TiO 2 is a promising feature that may guide the future development of miniaturized chemoresistors.

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An investigation of GO-SnO2-TiO2 ternary nanocomposite for the detection of acetone in diabetes mellitus patient’s breath

Cited by 66 publications

References 44 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

Breakthroughs in the Design of Novel Carbon-Based Metal Oxides Nanocomposites for VOCs Gas Sensing

Exploring SnxTi1−xO2 Solid Solutions Grown onto Graphene Oxide (GO) as Selective Toluene Gas Sensors

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