Exploration of ZrO2-shelled nanowires for chemiresistive detection of NO2 gas

Bang, Jin Ho; Lee, Namgue; Mirzaei, Ali; Choi, Myung Sik; Choi, Hyun-Woong; Jeon, Hyeongtag; Kim, Sang Sub; Kim, Hyoun Woo

doi:10.1016/j.snb.2020.128309

Cited by 23 publications

(8 citation statements)

References 79 publications

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“…Under a relatively low temperature, the gas molecule (acetic acid) is incapable of acquiring enough energy to react with the adsorbed oxygen species on the Fe/Zr-x surface, while, if the operating temperature exceeds the threshold level (225 1C), the oxygen species tend to desorb from the Fe/Zr-x surface, resulting in a decrease of sensing response. 53,54 Hence, the following sensing tests are all set at 225 1C. Additionally, the high and rapid response (o30 s) indicates that the resulted sensor enables to fleetly mark the signal of acetic acid, which is essential in practical applications for sensing devices (Fig.…”

Section: Gas-sensing Characteristicsmentioning

confidence: 99%

Enhanced acetic acid sensing of MOF-derived α-Fe₂O₃/ZrO₂ arising from phase junction and defects

et al. 2022

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Section: Gas-sensing Characteristicsmentioning

confidence: 99%

Enhanced acetic acid sensing of MOF-derived α-Fe₂O₃/ZrO₂ arising from phase junction and defects

et al. 2022

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“…Zirconium oxide (ZrO 2 ) is typically utilized for electrochemical gas sensing at high temperatures [ 77 ], and the number of reports on its resistive-based gas sensing is limited. Bang et al [ 78 ] synthesized–SnO 2 -ZrO 2 C-S NWs with different shell thicknesses (10.5–34.1 nm) and studied their NO 2 gas-sensing properties ( Figure 7 a).…”

Section: Gas Sensors Based On Morphology Engineering: Core–shell (C-s) Sensing Materialsmentioning

confidence: 99%

“…( b – e ) Illustration of NO 2 sensing by the gas sensors with ZrO 2 shell thicknesses of ( b ) 10.5, ( c ) 18.5, ( d ) 24.1, and ( e ) 34.1 nm. Reproduced from [ 78 ] with the permission of Elsevier.…”

Section: Figures Scheme and Tablesmentioning

confidence: 99%

State-of-the-Art Research on Chemiresistive Gas Sensors in Korea: Emphasis on the Achievements of the Research Labs of Professors Hyoun Woo Kim and Sang Sub Kim

Navale

Mirzaei

Majhi

et al. 2021

Sensors

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This review presents the results of cutting-edge research on chemiresistive gas sensors in Korea with a focus on the research activities of the laboratories of Professors Sang Sub Kim and Hyoun Woo Kim. The advances in the synthesis techniques and various strategies to enhance the gas-sensing performances of metal-oxide-, sulfide-, and polymer-based nanomaterials are described. In particular, the gas-sensing characteristics of different types of sensors reported in recent years, including core–shell, self-heated, irradiated, flexible, Si-based, glass, and metal–organic framework sensors, have been reviewed. The most crucial achievements include the optimization of shell thickness in core–shell gas sensors, decrease in applied voltage in self-heated gas sensors to less than 5 V, optimization of irradiation dose to achieve the highest response to gases, and the design of selective and highly flexible gas sensors-based WS2 nanosheets. The underlying sensing mechanisms are discussed in detail. In summary, this review provides an overview of the chemiresistive gas-sensing research activities led by the corresponding authors of this manuscript.

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“…In addition, there are a few reports indicating that Y 2 O 3 -stabilized ZrO 2 can be utilized for the sensing of a variety of gases and can enable operation at lower temperatures [ 17 , 18 , 19 , 20 ]. Bang et al reported that the NO 2 gas sensing capabilities of SnO 2 -ZrO 2 NWs with a particular shell thickness are better than those of pristine SnO 2 sensor in terms of sensor temperature and sensor response [ 21 ]. Owing to differences in work functions, electrons will flow from SnO 2 to ZrO 2 .…”

Section: Introductionmentioning

confidence: 99%

“…et al reported that the NO 2 gas sensing capabilities of SnO 2 -ZrO 2 NWs with a particular shell thickness are better than those of pristine SnO 2 sensor in terms of sensor temperature and sensor response[21]. Owing to differences in work functions, electrons will flow from SnO 2 to ZrO 2 .…”

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Magnesium Zirconate Titanate Thin Films Used as an NO2 Sensing Layer for Gas Sensor Applications Developed Using a Sol–Gel Method

Huang

Lee

Wang

2021

Sensors

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Magnesium zirconate titanate (MZT) thin films, used as a sensing layer on Al interdigitated electrodes prepared using a sol–gel spin-coating method, are demonstrated in this study. The p-type MZT/Al/SiO2/Si structure for sensing NO2 is also discussed. The results indicated that the best sensitivity of the gas sensor occurred when it was operating at a temperature ranging from 100 to 150 °C. The detection limit of the sensor was as low as 250 ppb. The sensitivity of the MZT thin film was 8.64% and 34.22% for 0.25 ppm and 5 ppm of NO2 gas molecules at a working temperature of 150 °C, respectively. The gas sensor also exhibited high repeatability and selectivity for NO2. The response values to 250, 500, 1000, 1500, 2000, 2500, and 5000 ppb NO2 at 150 °C were 8.64, 9.52, 12, 16.63, 20.3, 23, and 34.22%, respectively. Additionally, we observed a high sensing linearity in NO2 gas molecules. These results indicate that MZT-based materials have potential applications for use as gas sensors.

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Exploration of ZrO2-shelled nanowires for chemiresistive detection of NO2 gas

Cited by 23 publications

References 79 publications

Enhanced acetic acid sensing of MOF-derived α-Fe₂O₃/ZrO₂ arising from phase junction and defects

Enhanced acetic acid sensing of MOF-derived α-Fe₂O₃/ZrO₂ arising from phase junction and defects

State-of-the-Art Research on Chemiresistive Gas Sensors in Korea: Emphasis on the Achievements of the Research Labs of Professors Hyoun Woo Kim and Sang Sub Kim

Magnesium Zirconate Titanate Thin Films Used as an NO2 Sensing Layer for Gas Sensor Applications Developed Using a Sol–Gel Method

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Exploration of ZrO2-shelled nanowires for chemiresistive detection of NO2 gas

Cited by 23 publications

References 79 publications

Enhanced acetic acid sensing of MOF-derived α-Fe2O3/ZrO2 arising from phase junction and defects

Enhanced acetic acid sensing of MOF-derived α-Fe2O3/ZrO2 arising from phase junction and defects

State-of-the-Art Research on Chemiresistive Gas Sensors in Korea: Emphasis on the Achievements of the Research Labs of Professors Hyoun Woo Kim and Sang Sub Kim

Magnesium Zirconate Titanate Thin Films Used as an NO2 Sensing Layer for Gas Sensor Applications Developed Using a Sol–Gel Method

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Enhanced acetic acid sensing of MOF-derived α-Fe₂O₃/ZrO₂ arising from phase junction and defects

Enhanced acetic acid sensing of MOF-derived α-Fe₂O₃/ZrO₂ arising from phase junction and defects