Hydrothermally synthesized heterostructures of In2O3/MWCNT as acetone gas sensor

Kohli, Nipin; Hastir, Anita; Kumari, Malti; Singh, Ravi Chand

doi:10.1016/j.sna.2020.112240

Cited by 32 publications

(10 citation statements)

References 35 publications

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“…Nonstoichiometric defects arise due to the presence of an excess or deficiency of metal ions, which, in turn, is highly dependent on the synthesis process. These defects induce modifications in the band structure of the ideal In 2 O 3 , thus varying its electrical resistance [ 102 , 103 ]. Che et al [ 62 ] presented results related to In 2 O 3 microstructures with nanowire morphologies, fabricated by electrospinning exposed to acetone environments.…”

Section: Results Of Acetone Detection In Mox Sensorsmentioning

confidence: 99%

Metal Oxide Gas Sensors to Study Acetone Detection Considering Their Potential in the Diagnosis of Diabetes: A Review

2023

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Metal oxide (MOx) gas sensors have attracted considerable attention from both scientific and practical standpoints. Due to their promising characteristics for detecting toxic gases and volatile organic compounds (VOCs) compared with conventional techniques, these devices are expected to play a key role in home and public security, environmental monitoring, chemical quality control, and medicine in the near future. VOCs (e.g., acetone) are blood-borne and found in exhaled human breath as a result of certain diseases or metabolic disorders. Their measurement is considered a promising tool for noninvasive medical diagnosis, for example in diabetic patients. The conventional method for the detection of acetone vapors as a potential biomarker is based on spectrometry. However, the development of MOx-type sensors has made them increasingly attractive from a medical point of view. The objectives of this review are to assess the state of the art of the main MOx-type sensors in the detection of acetone vapors to propose future perspectives and directions that should be carried out to implement this type of sensor in the field of medicine.

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Section: Results Of Acetone Detection In Mox Sensorsmentioning

confidence: 99%

Metal Oxide Gas Sensors to Study Acetone Detection Considering Their Potential in the Diagnosis of Diabetes: A Review

2023

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“…A diversity of mainly nanosized metal oxides, including tungsten oxide 28 , zinc oxide 29 , cobalt oxide 30 , iron oxide 31 , copper oxide 32 , bismuth oxide 33 , samarium oxide 34 , and indium oxide 35 have already been used to fabricate acetone-detecting sensors. The pure and composite forms of the latest one, i.e., indium oxide (In 2 O 3 ), have been suggested as a reliable sensor for detecting gaseous acetone 8,21,[36][37][38] .…”

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confidence: 99%

Wavelet-artificial neural network to predict the acetone sensing by indium oxide/iron oxide nanocomposites

Iranmanesh

Pourahmad

Shabestani

et al. 2023

Sci Rep

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This study applies a hybridized wavelet transform-artificial neural network (WT-ANN) model to simulate the acetone detecting ability of the Indium oxide/Iron oxide (In2O3/Fe2O3) nanocomposite sensors. The WT-ANN has been constructed to extract the sensor resistance ratio (SRR) in the air with respect to the acetone from the nanocomposite chemistry, operating temperature, and acetone concentration. The performed sensitivity analyses demonstrate that a single hidden layer WT-ANN with nine nodes is the highest accurate model for automating the acetone-detecting ability of the In2O3/Fe2O3 sensors. Furthermore, the genetic algorithm has fine-tuned the shape-related parameters of the B-spline wavelet transfer function. This model accurately predicts the SRR of the 119 nanocomposite sensors with a mean absolute error of 0.7, absolute average relative deviation of 10.12%, root mean squared error of 1.14, and correlation coefficient of 0.95813. The In2O3-based nanocomposite with a 15 mol percent of Fe2O3 is the best sensor for detecting acetone at wide temperatures and concentration ranges. This type of reliable estimator is a step toward fully automating the gas-detecting ability of In2O3/Fe2O3 nanocomposite sensors.

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“…Evidence for currently available commercial ketone breathalyzers is lacking. Many studies have assessed the utility of novel sensors in the ketogenic diet [ 25 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 ], but very few have evaluated currently available devices. The BIOSENSE™ device is a breathalyzer with published clinical trial data detailing its efficacy.…”

Section: Current Technologymentioning

confidence: 99%

The Ketogenic Diet: Breath Acetone Sensing Technology

Alkedeh

Priefer

2021

Biosensors

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The ketogenic diet, while originally thought to treat epilepsy in children, is now used for weight loss due to increasing evidence indicating that fat is burned more rapidly when there is a low carbohydrate intake. This low carbohydrate intake can lead to elevated ketone levels in the blood and breath. Breath and blood ketones can be measured to gauge the level of ketosis and allow for adjustment of the diet to meet the user’s needs. Blood ketone levels have been historically used, but now breath acetone sensors are becoming more common due to less invasiveness and convenience. New technologies are being researched in the area of acetone sensors to capitalize on the rising popularity of the diet. Current breath acetone sensors come in the form of handheld breathalyzer devices. Technologies in development mostly consist of semiconductor metal oxides in different physio-chemical formations. These current devices and future technologies are investigated here with regard to utility and efficacy. Technologies currently in development do not have extensive testing of the selectivity of the sensors including the many compounds present in human breath. While some sensors have undergone human testing, the sample sizes are very small, and the testing was not extensive. Data regarding current devices is lacking and more research needs to be done to effectively evaluate current devices if they are to have a place as medical devices. Future technologies are very promising but are still in early development stages.

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Hydrothermally synthesized heterostructures of In2O3/MWCNT as acetone gas sensor

Cited by 32 publications

References 35 publications

Metal Oxide Gas Sensors to Study Acetone Detection Considering Their Potential in the Diagnosis of Diabetes: A Review

Metal Oxide Gas Sensors to Study Acetone Detection Considering Their Potential in the Diagnosis of Diabetes: A Review

Wavelet-artificial neural network to predict the acetone sensing by indium oxide/iron oxide nanocomposites

The Ketogenic Diet: Breath Acetone Sensing Technology

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