Enhanced NO2 sensitivity of SnO2 SAW gas sensors by facet engineering

Zhou, Licheng; Hu, Zhixiang; Wang, Peng; Gao, Naibo; Zhai, Bohui; Ouyang, Meng; Zhang, Guangzu; Chen, Bingbing; Luo, Jingting; Jiang, Shenglin; Li, Huayao; Liu, Huan

doi:10.1016/j.snb.2022.131735

Cited by 27 publications

(12 citation statements)

References 60 publications

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“…Accordingly, the solution-processable nanocrystalline metal oxides, ,,, not necessarily CQDs, have also attracted much attention. The RT gas-sensing effect have been observed on NO 2 -sensitive SnO 2 quantum wires (QWs), H 2 -sensitive SnO 2 QDs, H 2 S-sensitive ZnO, and NH 3 -sensitive TiO 2 QDs …”

Section: Gas-sensitive Effect Of Low-dimensional Semiconductor Nanoma...mentioning

confidence: 99%

Room-Temperature Semiconductor Gas Sensors: Challenges and Opportunities

2022

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Our demand for ubiquitous and reliable gas detection is spurring the design of intelligent and enabling gas sensors for the next-generation Internet of Things and Artificial Intelligence. The desire to introduce gas sensors everywhere is fueled by opportunities to create room-temperature semiconductor gas sensors with ultralow power consumption. In this Perspective, we provide an overview of the recent achievement of room-temperature gas sensors that have been translated from the advances in the design of the chemical and physical properties of low-dimensional semiconductor nanomaterials. The emergence of solutionprocessable nanomaterials opens up remarkable opportunities to integrate into highperformance and flexible room-temperature gas sensors by using low-temperature, large-area, solution-based methods instead of costly, high-vacuum, high-temperature device manufacturing processes. We review the fundamental factors which affect the receptor and transducer functions of semiconductor gas sensors. We also discuss challenges that must be addressed in the move to the continuous miniaturization and evolution of semiconductor gas sensors.

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Section: Gas-sensitive Effect Of Low-dimensional Semiconductor Nanoma...mentioning

confidence: 99%

Room-Temperature Semiconductor Gas Sensors: Challenges and Opportunities

2022

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“…After the introduction of nitrogen dioxide, the NO 2 molecules are trapping electrons from the hybrid material according to reaction (12) and from the oxygen ions (reaction (13)):…”

Section: Reduced Graphene Oxide and Iron (Iii) Oxide (Rgo/fe2o3)mentioning

confidence: 99%

“…For NO 2 detection, various materials have been proposed as sensor layers, e.g., ZnO, WO 3 , SnO 2 , Fe 2 O 3 , etc. [ 9 , 10 , 11 , 12 , 13 , 14 ]. Generally, they exhibit excellent performance in NO 2 detection, however, this is mainly at high temperature.…”

Section: Introduction—problems Of No 2 Detectionmentioning

confidence: 99%

Mechanisms of NO2 Detection in Hybrid Structures Containing Reduced Graphene Oxide: A Review

Drewniak

Pustelny

2022

Sensors

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The sensitive detection of harmful gases, in particular nitrogen dioxide, is very important for our health and environment protection. Therefore, many papers on sensor materials used for NO2 detection have been published in recent years. Materials based on graphene and reduced graphene oxide deserve special attention, as they exhibit excellent sensor properties compared to the other materials. In this paper, we present the most recent advances in rGO hybrid materials developed for NO2 detection. We discuss their properties and, in particular, the mechanism of their interaction with NO2. We also present current problems occuring in this field.

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“…In the last few decades, toxic chemicals and harmful gases have been discharged into the air due to the rapid development of science and technology and the increasing demand for fossil fuels. , The continuous discharge of toxic chemicals and gases poses major threats to both the ecological environment and human health . In these harmful gases, nitrogen dioxide (NO 2 ) causes severe health challenges and environmental pollution. , The World Health Organization included NO 2 into a list of the most dangerous yet common pollutants.…”

Section: Introductionmentioning

confidence: 99%

“…1,2 The continuous discharge of toxic chemicals and gases poses major threats to both the ecological environment and human health. 3 In these harmful gases, nitrogen dioxide (NO 2 ) causes severe health challenges and environmental pollution. 4,5 The World Health Organization included NO 2 into a list of the most dangerous yet common pollutants.…”

Section: Introductionmentioning

confidence: 99%

Au-WO₃ Nanowire-Based Electrodes for NO₂ Sensing

Lin

Wang

et al. 2022

ACS Appl. Nano Mater.

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In this work, a selective and highly sensitive gas sensor using tungsten oxide (WO 3 ) nanofibers was fabricated via electrospinning. WO 3 was functionalized with gold nanoparticles by magnetron sputtering at different sputtering times to obtain Au films with thicknesses of 1, 5, 10, and 15 nm. The sensing performance of Au film composite nanomaterials with different Au layer thicknesses was tested at 100−250 °C and different nitrogen dioxide (NO 2 ) concentrations ranging from 200 to 1000 ppb. The findings showed that the 10 nm Au−WO 3 composite nanomaterial sensor had the most significant improvement in the performance of the pristine WO 3 sensor compared with other Au−WO 3 composite nanomaterial sensors, and the optimal operating temperature of the sensor was 175 °C. The composite nanomaterial sensor exhibited excellent selectivity when exposed to different gases and also exhibited high sensibility when exposed to low concentrations of NO 2 under high humidity (80%). The mechanism of gas sensor performance improvement was also investigated.

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Enhanced NO2 sensitivity of SnO2 SAW gas sensors by facet engineering

Cited by 27 publications

References 60 publications

Room-Temperature Semiconductor Gas Sensors: Challenges and Opportunities

Room-Temperature Semiconductor Gas Sensors: Challenges and Opportunities

Mechanisms of NO2 Detection in Hybrid Structures Containing Reduced Graphene Oxide: A Review

Au-WO₃ Nanowire-Based Electrodes for NO₂ Sensing

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Enhanced NO2 sensitivity of SnO2 SAW gas sensors by facet engineering

Cited by 27 publications

References 60 publications

Room-Temperature Semiconductor Gas Sensors: Challenges and Opportunities

Room-Temperature Semiconductor Gas Sensors: Challenges and Opportunities

Mechanisms of NO2 Detection in Hybrid Structures Containing Reduced Graphene Oxide: A Review

Au-WO3 Nanowire-Based Electrodes for NO2 Sensing

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Product

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Au-WO₃ Nanowire-Based Electrodes for NO₂ Sensing