Nanostructured Metal Oxide-Based Acetone Gas Sensors: A Review

Amiri, Vahid; Roshan, Hossein; Mirzaei, Ali; Neri, G.; Ayesh, Ahmad I.

doi:10.3390/s20113096

Cited by 165 publications

(78 citation statements)

References 153 publications

(167 reference statements)

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“…The desired concentration of acetone vapor is obtained by injecting the Acetone liquid of a particular volume into the chamber. The volume of Acetone in ppm is determined using the equation (15) [33]…”

Section: Experimental Methodsmentioning

confidence: 99%

Performance Analysis, Modelling, and Development of a Signal Conditioning Unit of N-Type Metal Oxide Gas Sensor for Acetone Gas Detection.

Lm¹,

Sk²

2021

Preprint

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Metal oxide semiconductors have been widely used in the eld of gas sensor study. Various researches are being done to improve the sensitivity of the sensing material for applications like breath analyzers. In this work, a theoretical investigation and analysis of the n- type metal oxide for Acetone gas detection are carried out. The rate of change of resistance of the sensing material with respect to the change in the concentration of the target gas is analyzed. Acetone being a reducing gas the resistance was found to decrease for n-type material. The simulations were done using COMSOL Multiphysics and results showed that the resistance of the sensing layer varies with the concentration of the target gas. Also, the performance analysis of sensors has been compared with the experimental results. Further, we have also derived a mathematical expression connecting the relationship between the concentration of gas and the rate of change of resistance. The resistance change is observed to be proportional to the target gas concentration. A signal conditioning circuit was also designed for providing a user-friendly interface for monitoring the gas concentration. The simulation of the signal conditioning circuit was done using Proteus Design Suite. This work will aid researchers to define and predict the behaviour of gas sensors.

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Section: Experimental Methodsmentioning

confidence: 99%

Performance Analysis, Modelling, and Development of a Signal Conditioning Unit of N-Type Metal Oxide Gas Sensor for Acetone Gas Detection.

Lm¹,

Sk²

2021

Preprint

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“…Yet, it is explosive and flammable with lower and upper explosive limits of 2.6% and 12.8%, respectively. In addition, it has also been demonstrated that exposure to acetone with more than 173 ppm for a long time can cause several health problems such as headache, narcosis, dizziness, and nausea [6,18–21,28] . In 1971, Pauling et al [29] .…”

Section: Introductionmentioning

confidence: 99%

Zinc Oxide‐Based Acetone Gas Sensors for Breath Analysis: A Review

Drmosh

Alade

Qamar

et al. 2021

Chemistry An Asian Journal

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Acetone is one of the toxic, explosive, and harmful gases. It may cause several health hazard issues such as narcosis and headache. Acetone is also regarded as a key biomarker to diagnose several diseases as well as monitor the disorders in human health. Based on clinical findings, acetone concentration in human breath is correlated with many diseases such as asthma, halitosis, lung cancer, and diabetes. Thus, its investigation can become a new approach for health monitoring. Better management at the early stages of such diseases has the potential not only to reduce deaths associated with the disease but also to reduce medical costs. ZnO−based sensors show great potential for acetone gas due to their high chemical stability, simple synthesis process, and low cost. The findings suggested that the acetone sensing performance of such sensors can be significantly improved by manipulating the microstructure (surface area, porosity, etc.), composition, and morphology of ZnO nanomaterials. This article provides a comprehensive review of the state‐of‐the‐art research activities, published during the last five years (2016 to 2020), related to acetone gas sensing using nanostructured ZnO (nanowires, nanoparticles, nanorods, thin films, etc). It focuses on different types of nanostructured ZnO‐based acetone gas sensors. Furthermore, several factors such as relative humidity, acetone concentrations, and operating temperature that affects the acetone gas sensing properties‐ sensitivity, long‐term stability, selectivity as well as response and recovery time are discussed in this review. We hope that this work will inspire the development of high‐performance acetone gas sensors using nanostructured materials.

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“…The effect of exposure to the reducing or oxidizing target gases on the conductivity is the reverse of n‐type cases. Beyond n‐type or p‐type metal oxide as a sensing material, combining metal oxides with other metal oxides, noble metals and carbon‐based materials might generate p‐p, n‐p and n‐n type heterojunctions and potentially further enhance the electron mobility (Amiri et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Metal oxide‐based gas sensors for the detection of exhaled breath markers

2021

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Exhaled breath test is a typical disease monitoring method for replacing of blood and urine samples that may create discomfort for patients. To monitor exhaled breath markers, gas biomedical sensors have undergone rapid progresses for non‐invasive and point‐of‐care diagnostic devices. Among gas sensors, metal oxide‐based biomedical gas sensors have received remarkable attentions owing to their unique properties, such as high sensitivity, simple fabrication, miniaturization, portability, and real‐time monitoring. Herein, we reviewed the recent advances in chemoresistive metal oxide‐based gas sensors with ZnO, SnO 2 , and In 2 O 3 as sensing materials for monitoring a range of exhaled breath markers (i.e., NO, H 2 , H 2 S, acetone, isoprene, and formaldehyde). We focused on the strategies that improve the sensitivity and selectivity of metal oxide‐based gas sensors. The challenges to fabricate a functional gas sensor with high sensing performance along with suggestions are outlined.

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Nanostructured Metal Oxide-Based Acetone Gas Sensors: A Review

Cited by 165 publications

References 153 publications

Performance Analysis, Modelling, and Development of a Signal Conditioning Unit of N-Type Metal Oxide Gas Sensor for Acetone Gas Detection.

Performance Analysis, Modelling, and Development of a Signal Conditioning Unit of N-Type Metal Oxide Gas Sensor for Acetone Gas Detection.

Zinc Oxide‐Based Acetone Gas Sensors for Breath Analysis: A Review

Metal oxide‐based gas sensors for the detection of exhaled breath markers

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