Acetone sensing behavior of p-SmFeO3/n-ZnO nanocomposite synthesized by thermal treatment method

Anajafi, Zakie; Naseri, Mahmoud; Neri, G.

doi:10.1016/j.snb.2019.127252

Cited by 42 publications

(26 citation statements)

References 47 publications

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“…This behavior is in agreement with results reported by other authors, highlighting the higher resistance of nanocomposite samples compared to both pure counterparts. [42,43] According to the knowledge of physics of semiconductor, the concentration of carriers (e -1 ) mainly depends on the temperature and the dopant including doped elements and content. For specific semiconductor material, the carrier concentration (n 0 ) in conductive band (E c ) is mainly decided by the temperature (T), as Equation 1shows.…”

Section: Resultsmentioning

confidence: 99%

Construction of Hierarchical α‐Fe₂O₃/SnO₂ Nanoball Arrays with Superior Acetone Sensing Performance

Wang

Han

et al. 2020

Adv Materials Inter

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commercial applications both in military and civilian fields. [2-5] From the aspect of safety and environmental quality, gas sensors are becoming more and more important in our daily life, because they can instantly monitor the potential risk of explosive/toxic gas emission or leakage. [6] Acetone, for example, a kind of volatile organic compound (VOCs) with special aroma and colorless transparent nature, which is extensively utilized in micro/ nanoelectronics field, lithography, coatings, leather, pesticides, explosive plastic, rubber, paint, etc. [7-10] Specifically, acetone is also a flammable, explosive, and toxic organic liquid with an ignition point of 465 °C, and the most easily ignitable concentration is 4.5%. [11] Moreover, acetone vapor and air can easily form one explosive mixture with the explosive limit of ≈2.6-12.8%, and the concentration of the maximum explosive pressure is 6.3%. Therefore, once the acetone leakage occurs, it is easy to trigger public safety accident. [12,13] In recent years, MOSs such as SnO 2 , Fe 2 O 3 , ZnO, WO 3 , In 2 O 3 and their hybrids/composites based electronics such as sensors and detectors have allured intensive desire due to the wide application on detecting irritative, malodorous, explosive, and toxic VOC gases. [4,14-19] Unfortunately, gas sensors based on MOSs are still bearing some urgent problems to overcome such as slow response, a narrow detection limit, inferior selectivity, and short-term cycling stability, especially in high humidity conditions. [20,21] Very recently, many strategies have been proposed to relieve the above shortcomings via various intrigues such as rare metal decoration, doping modification technology, heterojunction, microwave-assist, etc. [22-27] Accordingly, some convincible progress and results have been achieved or are pushing forward. In 2019, Lu's group reported that the Au-doped and Au-loaded mesoporous In 2 O 3 exhibited superior acetone sensing performance. It was demonstrated that the sensing performance can be manipulated by different doping or loading methods of Au; Thereafter, the SnO 2 ultrathin films functionalized by single atom Pt could greatly enhance the trietylamine gas sensing performance; [25,28] Then, Chen and his co-workers reported that the p(NiO)/n(ZnO) heterojunction networks could increase the gas sensor response by more than four times, meanwhile, the lower detection limit was achieved. On the other hand, the p-n nanoheterojunction networks displayed a strong and selective response toward acetone and ethanol under Gas sensors based on SnO 2 , Fe 2 O 3 , and their nanocomposites are promising candidates for sensing of acetone, ethanol, hydrogen, NO 2 , ozone, and formaldehyde. In this work, a rational hydrothermal route is designed to prepare α-Fe 2 O 3 /SnO 2 porous sphere arrays assembled with hierarchical nanostructure (denoted as α-Fe 2 O 3 (x%)/SnO 2). The results demonstrate that the α-Fe 2 O 3 (4%)/SnO 2 based sensor exhibits excellent sensing performance, the short response/recovery time of 3 and 4 s, re...

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Section: Resultsmentioning

confidence: 99%

Construction of Hierarchical α‐Fe₂O₃/SnO₂ Nanoball Arrays with Superior Acetone Sensing Performance

Wang

Han

et al. 2020

Adv Materials Inter

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“…In p–n junction, the resistance of p–n heterojunctions becomes a key factor to the gas sensor characteristics and the varying proportions of each oxide in the nanocomposite system yield a wide range of gas sensors with different sensing properties. For instance, Naseri et al [102] . fabricated p−SmFeO 3 /n−ZnO heterostructure using the thermal treatment and the p–n heterostructure were examined in the detection of acetone at low concentration (2–40 ppm).…”

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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“…随后, La 0.5 Sr 0.5 -MnO 3 孔状结构材料也被报道, 这种多孔材料经过酸腐蚀后, 可得到高性能的催化剂材料(图12(c-c1)) [69] . 这类多孔材料是多形貌钙钛矿材料的重要发展方向, 可利用这种思想构筑更多样的催化材料或吸附分离材料 [141] . 此外, 稀土钙钛矿纳米材料和其他功能材料复 [122] .…”

Section: 这些空心壳或多孔结构在氧化物型稀土钙钛矿unclassified

Progress of controllable synthesis of rare-earth containing perovskite nano-materials

Zeng¹,

Zhang²,

Du³

2020

Sci. Sin.-Chim

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Acetone sensing behavior of p-SmFeO3/n-ZnO nanocomposite synthesized by thermal treatment method

Cited by 42 publications

References 47 publications

Construction of Hierarchical α‐Fe₂O₃/SnO₂ Nanoball Arrays with Superior Acetone Sensing Performance

Construction of Hierarchical α‐Fe₂O₃/SnO₂ Nanoball Arrays with Superior Acetone Sensing Performance

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

Progress of controllable synthesis of rare-earth containing perovskite nano-materials

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Acetone sensing behavior of p-SmFeO3/n-ZnO nanocomposite synthesized by thermal treatment method

Cited by 42 publications

References 47 publications

Construction of Hierarchical α‐Fe2O3/SnO2 Nanoball Arrays with Superior Acetone Sensing Performance

Construction of Hierarchical α‐Fe2O3/SnO2 Nanoball Arrays with Superior Acetone Sensing Performance

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

Progress of controllable synthesis of rare-earth containing perovskite nano-materials

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Product

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Construction of Hierarchical α‐Fe₂O₃/SnO₂ Nanoball Arrays with Superior Acetone Sensing Performance

Construction of Hierarchical α‐Fe₂O₃/SnO₂ Nanoball Arrays with Superior Acetone Sensing Performance