UV assisted ppb-level acetone detection based on hollow ZnO/MoS2 nanosheets core/shell heterostructures at low temperature

Chi, Xiao; Qiao, Xurong; Li, Kun; Wang, Ping; Xiong, Ya; Li, Xiaofang; Xia, Fujun; Xue, Qingzhong

doi:10.1016/j.snb.2020.128208

Cited by 80 publications

(43 citation statements)

References 54 publications

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“…As a wide-band-gap semiconductor sensitive material, ZnO has the advantage of low cost, high sensitivity, simplicity in fabrication and compatibility with modern electronic devices [ 8 ]. However, metal oxide gas-sensing materials also have the disadvantages of high operating temperature and low selectivity, which restricts the application of metal oxide materials in gas sensing [ 9 ]. Many previous works have demonstrated that the most important factor determining the performance of a gas sensor is the design and synthesis of sensitive materials [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of ZnO/Carbon Quantum Dots Composite Sensor for Detecting NO Gas

Zhang

Wang

et al. 2020

Sensors

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ZnO and carbon quantum dots (CQDs) were synthesized by a hydrothermal method, and CQDs were doped into ZnO by a grinding method to fabricate a ZnO/CQDs composite. The X-ray diffraction and the scanning electron microscope revealed that the as-prepared ZnO has a structure of wurtzite hexagonal ZnO and a morphology of a flower-like microsphere which can provide more surface areas to adsorbed gases. The ZnO/CQDs composite has a higher gas sensitivity response to NO gas than ZnO microspheres. A gas sensitivity test of the ZnO/CQDs composite showed that the sensor had a high NO response (238 for 100 ppm NO) and NO selectivity. The detection limit of the ZnO/CQDs composite to NO was 100 ppb and the response and recovery times were 34 and 36 s, respectively. The active functional group provided by CQDs has a significant effect on NO gas sensitivity, and the gas sensitivity mechanism of the ZnO/CQDs composite is discussed.

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Section: Introductionmentioning

confidence: 99%

Fabrication of ZnO/Carbon Quantum Dots Composite Sensor for Detecting NO Gas

Zhang

Wang

et al. 2020

Sensors

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“…The high performance was achieved at room temperature. In another study, Xue et al [105] . fabricated ZnO/MoS 2 core/shell structure, and UV light was used to further enhance acetone response speed and drastically reduce operating temperature down to 100 °C.…”

Section: Metal Oxide/zno Heterostructurementioning

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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“…To this light, differently shaped nanostructures were synthesized by the tactics like hydrothermal, impregnation, templated synthesize, etc. 3D inverse opal (3DIO) In 2 O 3 –CuO nano-architecture, 3D grass-like carbon-doped ZrO 2 nano-architecture, Sm 2 O 3 loaded mulberry shaped SnO 2 hierarchical nanostructure, cactus-like WO 3 -SnO 2 nanocomposite, walnut like architecture of Fe and C co-doped WO 3 , Urchin like Cr-doped WO 3 hollow nanospheres, and core-shell heterostructure of ZnO/MoS 2 NShs were engaged in effective detection of acetone as shown in Table 1 [ 141 , 142 , 143 , 144 , 145 , 146 , 147 ]. Wherein, 3D grass-like carbon-doped ZrO 2 architecture film displays the selectivity to both alcohols and acetone [ 142 ], thereby cannot be stated as a better candidate for acetone detection.…”

Section: Diverse Nanostructures In Acetone Detectionmentioning

confidence: 99%

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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UV assisted ppb-level acetone detection based on hollow ZnO/MoS2 nanosheets core/shell heterostructures at low temperature

Cited by 80 publications

References 54 publications

Fabrication of ZnO/Carbon Quantum Dots Composite Sensor for Detecting NO Gas

Fabrication of ZnO/Carbon Quantum Dots Composite Sensor for Detecting NO Gas

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

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

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