Room-temperature acetaldehyde-sensing properties of SILAR-deposited ZnO thin films: role of tungsten doping

Radha, K K; Selvaraj, Bhuvaneswari; Srinivasan, P. Bala; Krishnakumar, Akshay; Rayappan, John Bosco Balaguru; Babu, K. Jayanth

doi:10.1007/s10854-021-06307-5

Cited by 5 publications

(3 citation statements)

References 38 publications

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“…The conductivity of the sensing element is altered by the interaction between adsorbed oxygen and the reducing or oxidizing target analytes. In the presence of a reducing analyte, the adsorbed oxygen species on the sensing element detach and donate the previously trapped electron to the conduction band [15]. Consequently, the heightened concentration of electrons in the conduction band leads to a reduction in the resistance of the sensing element.…”

Section: General Sensing Mechanism For Mos Non-biological Analytes Se...mentioning

confidence: 99%

Printable metal oxide nanostructures based chemiresistive non-biological analyte sensors

Kumar,

Kim,

Kim

et al. 2023

Nano Ex.

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Non-biological analyte sensing refers to the ability to detect and quantify various chemical and physical parameters present in the environment or biological samples that are not directly associated with biological entities such as cells, tissues, or organisms. The field of non-biological analyte sensing has its roots in the early detection of any analytes, and over the years, it has expanded to include a wide range of applications such as environmental monitoring, food safety, and medical diagnostics. This perspective focuses on current status, challenges and future prospects of metal oxide nanostructures based non-biological analyte sensors. In this context, the present review aims to delve into the intricate mechanisms, fabrication techniques, and applications of printable chemical sensors for non-biological analytes. Through a comprehensive exploration of the scientific advancements and technological breakthroughs in this domain, this review seeks to provide a comprehensive understanding of the evolving landscape of printable chemical sensors and their pivotal role in modern analytical endeavours.

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Section: General Sensing Mechanism For Mos Non-biological Analytes Se...mentioning

confidence: 99%

Printable metal oxide nanostructures based chemiresistive non-biological analyte sensors

Kumar,

Kim,

Kim

et al. 2023

Nano Ex.

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“…Recent trends in the field of biochemical engineering look into addressing the limitations by developing high‐performance gas sensors that can be operated at room temperature 11 . Despite lowered temperature demand, these sensors exhibited promising response towards target gases such as nitrogen dioxide, 12 hydrogen sulfide, 13 ammonia, 14 ethanol 15 and acetaldehyde 16 . In the context of acetone sensing at room temperature, Zhang et al 17 synthesised a zinc oxide nanopolyhedra/S, N: graphene quantum dots/polyaniline nanocomposite.…”

Section: Introductionmentioning

confidence: 99%

“…11 Despite lowered temperature demand, these sensors exhibited promising response towards target gases such as nitrogen dioxide, 12 hydrogen sulfide, 13 ammonia, 14 ethanol 15 and acetaldehyde. 16 In the context of acetone sensing at room temperature, Zhang et al 17 synthesised a zinc oxide nanopolyhedra/S, N: graphene quantum dots/polyaniline nanocomposite. The findings revealed that the nanocomposite sensor has a detection limit as low as 0.1 ppm with short response-recovery times.…”

mentioning

confidence: 99%

Optimisation of H‐doped WO₃ synthesis at ambient conditions for potential acetone gas sensing

Tamelarasan,

Lo,

Muthoosamy

et al. 2023

Asia-Pacific J Chem Eng

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Tungsten trioxide (WO3) is a highly desired semiconductor metal oxide (SMO) to detect acetone gas which is present at high levels in the breath of diabetic patients. Current research in the biosensor field is focused on the synthesis of sensing material at room temperature to ease fabrication and reduce energy requirements for operations. In this context, hydrogen doping aids in increasing the baseline conductivity of WO3. Therefore, the current research aimed to synthesise H‐doped WO3 at ambient conditions via an ultrasonication‐assisted hydrogenation route. Besides, the independent effects of other factors on hydrogenation were studied. These include synthesis temperature (room temperature to 80°C) and zinc precursor loading (0.8 to 2.0). By varying the concentrations of WO3 for the synthesis, it was determined that the highest degree of hydrogenation was achieved at 10 mg/ml. This was indicated by a visible colour change to dark blue and the highest conductivity. The findings revealed that hydrogenation is less effective at higher temperatures. The most optimum zinc loading was found to be 1.6 where the maximum attainable conductivity was 116.1 mS/cm. This H‐doped WO3 sample was subsequently subjected to diluted acetone sensing performance. The sample showed a significant reduction in resistance towards diluted acetone of 1000 ppm compared to undoped WO3. Thus, findings from this work offer a potential room temperature‐based synthesis method for acetone detection at low concentration.

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Tuning the electrical and room-temperature gas sensing properties of transparent ZnO thin films through Mo doping

Thomas,

Thirumalaisamy,

Madanagurusamy

et al. 2023

J Mater Sci: Mater Electron

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Room-temperature acetaldehyde-sensing properties of SILAR-deposited ZnO thin films: role of tungsten doping

Cited by 5 publications

References 38 publications

Printable metal oxide nanostructures based chemiresistive non-biological analyte sensors

Printable metal oxide nanostructures based chemiresistive non-biological analyte sensors

Optimisation of H‐doped WO₃ synthesis at ambient conditions for potential acetone gas sensing

Tuning the electrical and room-temperature gas sensing properties of transparent ZnO thin films through Mo doping

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Room-temperature acetaldehyde-sensing properties of SILAR-deposited ZnO thin films: role of tungsten doping

Cited by 5 publications

References 38 publications

Printable metal oxide nanostructures based chemiresistive non-biological analyte sensors

Printable metal oxide nanostructures based chemiresistive non-biological analyte sensors

Optimisation of H‐doped WO3 synthesis at ambient conditions for potential acetone gas sensing

Tuning the electrical and room-temperature gas sensing properties of transparent ZnO thin films through Mo doping

Contact Info

Product

Resources

About

Optimisation of H‐doped WO₃ synthesis at ambient conditions for potential acetone gas sensing