Room temperature operatable high sensitive toluene gas sensor using chemiresistive Ag/Bi2O3 nanocomposite

David, S. P. Subin; Veeralakshmi, Selvakumar; Sandhya, J.; Nehru, Selvan; Kalaiselvam, S.

doi:10.1016/j.snb.2020.128410

Cited by 57 publications

(20 citation statements)

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“…Similar to microstructure-based volatile hydrocarbon vapors quantification (example: Sn 2+ doped NiO microspheres in Xylene detection with sub-ppm LOD) [ [390][391][392][393][394][395][396][397]. Wherein, Ag/Bi 2 O 3 nanocomposite and Graphene/SnO 2 NPs nanocomposite were found to perform remarkably in terms of their operation temperature (at room temperature) [394,397]. Recently, Luo et al described the sensitivity of a polymer-SWCNTs composite toward BTX with an exceptional LOD of 5 ppm [398].…”

Section: Volatile Hydrocarbons Detection By Distinct Nanostructuresmentioning

confidence: 97%

“…Similar to microstructure-based volatile hydrocarbon vapors quantification (example: Sn 2+ doped NiO microspheres in Xylene detection with sub-ppm LOD) [ 389 ], nanocomposites, such as Pd/PdO/S-SnO 2 nanocomposite film, rGO/Co 3 O 4 nanocomposite, WO 3 decorated TiO 2 NPs nanocomposite, BGQD/Ag–LaFeO 3 nanocomposite, Ag/Bi 2 O 3 nanocomposite, AgO loaded LaFeO 3 nanocomposite, CuO NPs-Ti 3 C 2 Tx MXene nanocomposite, and Graphene/SnO 2 NPs nanocomposite were effectively applied in the detection of hydrocarbons as detailed in Table 5 [ 390 , 391 , 392 , 393 , 394 , 395 , 396 , 397 ]. Wherein, Ag/Bi 2 O 3 nanocomposite and Graphene/SnO 2 NPs nanocomposite were found to perform remarkably in terms of their operation temperature (at room temperature) [ 394 , 397 ]. Recently, Luo et al described the sensitivity of a polymer-SWCNTs composite toward BTX with an exceptional LOD of 5 ppm [ 398 ].…”

Section: Volatile Hydrocarbons Detection By Distinct Nanostructurementioning

confidence: 99%

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Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Shellaiah

Sun

2021

Sensors

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Environmental pollution related to volatile organic compounds (VOCs) has become a global issue which attracts intensive work towards their controlling and monitoring. To this direction various regulations and research towards VOCs detection have been laid down and conducted by many countries. Distinct devices are proposed to monitor the VOCs pollution. Among them, chemiresistor devices comprised of inorganic-semiconducting materials with diverse nanostructures are most attractive because they are cost-effective and eco-friendly. These diverse nanostructured materials-based devices are usually made up of nanoparticles, nanowires/rods, nanocrystals, nanotubes, nanocages, nanocubes, nanocomposites, etc. They can be employed in monitoring the VOCs present in the reliable sources. This review outlines the device-based VOC detection using diverse semiconducting-nanostructured materials and covers more than 340 references that have been published since 2016.

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Section: Volatile Hydrocarbons Detection By Distinct Nanostructuresmentioning

confidence: 97%

Section: Volatile Hydrocarbons Detection By Distinct Nanostructurementioning

confidence: 99%

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Shellaiah

Sun

2021

Sensors

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“…Vishwakarma et al 15 applied CdS-doped TiO 2 nanocomposites to RT acetone detection. However, an optimized 2 wt % CdS doping only made the composite show a response of 71% toward 5000 ppm acetone, the response/recovery time being 55/115 s. David et al 16 demonstrated a RT Ag/Bi 2 O 3 nanocomposite-based toluene gas sensor which had a detection range of 10–100 ppm. To be specific, its response toward 50 ppm toluene was 89.21%, and the corresponding response/recovery time was ∼60/∼320 s. It serves to show that relevant research on RT sensing toward VOCs is in a fledging period and woefully inadequate, which is exactly the driving force for us to carry out targeted research.…”

Section: Introductionmentioning

confidence: 99%

Visible Light-Induced Room-Temperature Formaldehyde Gas Sensor Based on Porous Three-Dimensional ZnO Nanorod Clusters with Rich Oxygen Vacancies

et al. 2022

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Oxygen vacancy (V O ) is a kind of primary point defect that extensively exists in semiconductor metal oxides (SMOs). Owing to some of its inherent qualities, an artificial manipulation of V O content in one material has evolved into a hot research field, which is deemed to be capable of modulating band structures and surface characteristics of SMOs. Specific to the gas-sensing area, V O engineering of sensing materials has become an effective means in enhancing sensor response and inducing light-enhanced sensing. In this work, a high-efficiency microwave hydrothermal treatment was utilized to prepare a V O -rich ZnO sample without additional reagents. The X-ray photoelectron spectroscopy test revealed a significant increase in V O proportion, which was from 9.21% in commercial ZnO to 36.27% in synthesized V O -rich ZnO possessing three-dimensional and air-permeable microstructures. The subsequent UV–vis–NIR absorption and photoluminescence spectroscopy indicated an extension absorption in the visible region and band gap reduction of V O -rich ZnO. It turned out that the V O -rich ZnO-based sensor exhibited a considerable response of 63% toward 1 ppm HCHO at room temperature (RT, 25 °C) under visible light irradiation. Particularly, the response/recovery time was only 32/20 s for 1 ppm HCHO and further shortened to 10/5 s for 10 ppm HCHO, which was an excellent performance and comparable to most sensors working at high temperatures. The results in this work strongly suggested the availability of V O engineering and also provided a meaningful candidate for researchers to develop high-performance RT sensors detecting volatile organic compounds.

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“…From the viewpoint of accessible materials, ZnO and Bi 2 O 3 have the advantages of tunable electrical conductivity, high electron affinity, wide bandgap, and environmentally benign, [ 19–22 ] making them promising high‐sensitive materials for constructing gas sensors. Furthermore, substantial experimental and theoretical efforts have been devoted to the exploration of a 2D nanosheet (NS) structure for gas sensors due to its large specific surface area, high electrical conductivity, and excellent flexibility, which can be one of the ideal structures employed in gas sensors.…”

Section: Introductionmentioning

confidence: 99%

Ultrasensitive Exhaled Breath Sensors Based on Anti‐Resonant Hollow Core Fiber with In Situ Grown ZnO‐Bi₂O₃ Nanosheets

Liu

Zheng

Wang

et al. 2021

Adv Materials Inter

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Combination of anti‐resonant hollow‐core fiber (HCF) and semiconductor nanomaterial is an effective strategy to obtain high‐performance gas sensors with exceptional sensitivity and low power consumption. However, controlling the semiconductor morphology onto HCF is a major challenge to achieve the desired gas sensor with the enhanced sensitivity. Here, a ZnO‐Bi2O3 nanosheets (NSs) heterostructure is grown in situ on the surface of HCF by sol–gel and hydrothermal methods. ZnO‐Bi2O3 NSs serving as electron acceptors trap electrons after acetone adsorption and then change the refractive index of the surface of HCF. Benefiting from the unique sheet structure and the synergetic effects for multi‐component, the resulting ZnO‐Bi2O3 NSs enabled HCF gas sensor exhibits high sensitivity, selectivity, and repeatability for detecting acetone at room temperature, particularly in the low concentration range, with the theoretical limit of detection down to 140 parts‐per‐billion. Meanwhile, the successful application of the ZnO‐Bi2O3 NSs enabled HCF gas sensor to distinguish the exhaled breath from the healthy individuals and simulated diabetic cases is demonstrated, which paves the way to achieve non‐invasive, ultra‐sensitivity gas sensing at room temperature for the early diagnosis of diabetes.

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Room temperature operatable high sensitive toluene gas sensor using chemiresistive Ag/Bi2O3 nanocomposite

Cited by 57 publications

References 56 publications

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Visible Light-Induced Room-Temperature Formaldehyde Gas Sensor Based on Porous Three-Dimensional ZnO Nanorod Clusters with Rich Oxygen Vacancies

Ultrasensitive Exhaled Breath Sensors Based on Anti‐Resonant Hollow Core Fiber with In Situ Grown ZnO‐Bi₂O₃ Nanosheets

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Room temperature operatable high sensitive toluene gas sensor using chemiresistive Ag/Bi2O3 nanocomposite

Cited by 57 publications

References 56 publications

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Visible Light-Induced Room-Temperature Formaldehyde Gas Sensor Based on Porous Three-Dimensional ZnO Nanorod Clusters with Rich Oxygen Vacancies

Ultrasensitive Exhaled Breath Sensors Based on Anti‐Resonant Hollow Core Fiber with In Situ Grown ZnO‐Bi2O3 Nanosheets

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Product

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About

Ultrasensitive Exhaled Breath Sensors Based on Anti‐Resonant Hollow Core Fiber with In Situ Grown ZnO‐Bi₂O₃ Nanosheets