Gas sensing behavior of ZnO thick film sensor towards H2S, NH3, LPG and CO2.

Onkar, Suresh G.; Nagdeote, S.B.; Wadatkar, A. S.; Kharat, Prashant B.

doi:10.1088/1742-6596/1644/1/012060

Cited by 13 publications

(3 citation statements)

References 40 publications

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“…Response of the prepared thin films was increasing linearly for increasing gas concentration. [ 18,19 ] The enhanced response and recovery time of the Mn 0.5 Zn 0.5 Fe 2 O 4 thin film is observed from Figure 5.…”

Section: Resultsmentioning

confidence: 95%

Low‐cost Fabrication of Zn‐doped MnFe₂O₄ (Mn_0.5Zn_0.5Fe₂O₄) Film for H₂S Gas Sensing Applications

Kharat

Somvanshi²,

Somwanshi³

et al. 2021

Macromolecular Symposia

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Multicomponent spinel ferrites are essential to be used in high‐performance gas‐sensing materials. In the present work, Mn0.5Zn0.5Fe2O4 spinel ferrite thin film is prepared via spray printing technique. The prepared film can be easily retrieved and utilized for multiple cycles due to its magnetic properties. The morphology, composition, and crystal structure of Mn0.5Zn0.5Fe2O4 spinel ferrite thin film are examined using scanning electron microscopy, infrared spectroscopy, and X‐ray diffraction. The produced films are in the range of around 20 nm and manifest spinel cubic structure. The prepared film is tested for its sensitivity to NO2, NH3, H2, and H2S gases, and the Mn0.5Zn0.5Fe2O4 spinel ferrite thin film is found the most sensitive and selective to H2S gas. The prepared Mn0.5Zn0.5Fe2O4 spinel ferrite thin film shows enhanced sensing performance functional at low temperatures, and consequently, they need low operational power. They are also simple to fabricate at the appropriate cost.

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Section: Resultsmentioning

confidence: 95%

Low‐cost Fabrication of Zn‐doped MnFe₂O₄ (Mn_0.5Zn_0.5Fe₂O₄) Film for H₂S Gas Sensing Applications

Kharat

Somvanshi²,

Somwanshi³

et al. 2021

Macromolecular Symposia

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“…[ 86 ] It is well known that the sensor surface resistance increases with the adsorption of oxidizing gases like O 2 or CO 2 and vice versa for reducing gasses like CO or C 3 H 8 . [ 87 ] This resistance change happens due to the transfer of charge carried from the semiconductor to the adsorbed gas molecule, specifically electrons in the case of an n‐type semiconductor like ZnO. Therefore, the sensing response of a semiconductor can be increased by raising the number of electrons transferred due to the presence of a test gas.…”

Section: Resultsmentioning

confidence: 99%

Carbon Dioxide Detectors based on Al‐ and Ni‐Doped ZnO

Lozano-Rosas

Hernandez

Elizalde-González

et al. 2022

Physica Status Solidi (a)

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Humanity all around the world currently faces two serious challenges: global warming and the COVID-19 pandemic. It is well known that the earth's atmosphere is composed of greenhouse gases that act as a shielding blanket, keeping the global temperature in an optimal range. [1] The three main greenhouse gasses which have presented a significant increment in the course of the industrial period are carbon dioxide (CO 2 ), methane (CH 4 ), and nitrous oxide (N 2 O). [2] CO 2 plays a primary role in global warming because of its production due to a wide range of sources like manufacturing processes, automobiles, human respiration, decomposition, ocean release, etc. [3] In contrast, from December 2019 to date, the COVID-19 pandemic is causing a global impact on every sector of society. [4] One of the strategies of mitigation for the pandemic has been CO 2 concentration monitoring in enclosed spaces to measure indoor ventilation requirements and thus reduce the risk of contagion by the aerosol transmission of the virus. Also, it is clear that CO 2 monitoring has become mandatory to maintain air quality.The values of CO 2 concentration in outdoor ambient air are %400 ppm. [5] Regarding CO 2 concentrations in internal environments, the reality is different depending on the country, specific location, and ventilation system; however, according to the document "Recommendations for operation and maintenance of air conditioning and ventilation systems of buildings and premises for the prevention of the spread of SARS-Cov-2" from Spanish Ministry of Health, for good quality air, it is considered that the concentration of CO 2 in the indoor environment with respect to its concentration in the outdoor environment, should not be higher than 500 ppm. [6] ðCO 2 indoor À CO 2 outdoorÞ < 500 ppm CO 2(1)The first decade of the 21 st century was witness to massive production of sensors, [7] driven principally by the growing concern of global warming. However, new sensing technologies were emerged in the past decade, such as calorimetric sensors (CB), metal-oxide-semiconductor field-effect transistor (MOSFET), conducting polymer sensors, electrochemical sensors (EC), metal-oxide semiconductor (MOS), optical sensors, quartz crystal microbalance (QMB), and surface acoustic wave (SAW). [8] Among these, MOS sensors are mostly investigated, due to their excellent sensitivity, very short response times, low cost, minimal noise, small size, low power consumption for adequate battery life, detection of both oxidizing and reducing gases, easy fabrication, and are excellent candidates for miniaturization with high portability. [9][10][11] There is a wide variety of metal oxides employed for CO 2 detection, including pristine materials:

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“…ZnO nanoparticles show promising properties for various device applications like transparent electrode in solar cell, chemical sensor [5][6][7], humidity sensor [8], UV photo sensor and high power FETs. The literature study revealed a variety of synthesis methods for producing ZnO nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO nanoparticles through a simple wet chemical precipitation method

Taka

Das

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The research on Zinc oxide nanoparticles has become very important on these days due to its unique property and wide range of applications in all the branches of science. In this study, we synthesized ZnO nanoparticles through a simple and cost-effective wet chemical precipitation approach. The XRD spectra revealed the hexagonal wurtzite structure in the prepared ZnO nanoparticles. The UV-Vis absorption peak of the as - prepared ZnO sample was identified at 301.2 nm and was observed to be blue shifted in comparison to the bulk counterpart. The transmittance analysis of the prepared ZnO sample showed very high transmittance to the visible range of light. The widening of the optical band gap was observed in the preparation ZnO sample. The band gap of the synthesized ZnO sample was found to be 3.7943 eV. The theoretical estimation of particle size in the prepared ZnO sample was performed using the Brus model and the particle size was estimated to be 4.38 nm. This study revealed the potential application of prepared ZnO nanoparticles as transparent electrode in solar cell.

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Gas sensing behavior of ZnO thick film sensor towards H₂S, NH₃, LPG and CO₂.

Cited by 13 publications

References 40 publications

Low‐cost Fabrication of Zn‐doped MnFe₂O₄ (Mn_0.5Zn_0.5Fe₂O₄) Film for H₂S Gas Sensing Applications

Low‐cost Fabrication of Zn‐doped MnFe₂O₄ (Mn_0.5Zn_0.5Fe₂O₄) Film for H₂S Gas Sensing Applications

Carbon Dioxide Detectors based on Al‐ and Ni‐Doped ZnO

Synthesis of ZnO nanoparticles through a simple wet chemical precipitation method

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Gas sensing behavior of ZnO thick film sensor towards H2S, NH3, LPG and CO2.

Cited by 13 publications

References 40 publications

Low‐cost Fabrication of Zn‐doped MnFe2O4 (Mn0.5Zn0.5Fe2O4) Film for H2S Gas Sensing Applications

Low‐cost Fabrication of Zn‐doped MnFe2O4 (Mn0.5Zn0.5Fe2O4) Film for H2S Gas Sensing Applications

Carbon Dioxide Detectors based on Al‐ and Ni‐Doped ZnO

Synthesis of ZnO nanoparticles through a simple wet chemical precipitation method

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Product

Resources

About

Gas sensing behavior of ZnO thick film sensor towards H₂S, NH₃, LPG and CO₂.

Low‐cost Fabrication of Zn‐doped MnFe₂O₄ (Mn_0.5Zn_0.5Fe₂O₄) Film for H₂S Gas Sensing Applications

Low‐cost Fabrication of Zn‐doped MnFe₂O₄ (Mn_0.5Zn_0.5Fe₂O₄) Film for H₂S Gas Sensing Applications