Highly sensitive and rapidly responding room-temperature NO2 gas sensors based on WO3 nanorods/sulfonated graphene nanocomposites

Wang, Tingting; Hao, Juanyuan; Zheng, Shengliang; Sun, Quan; Zhang, Di; Wang, You

doi:10.1007/s12274-017-1688-y

Cited by 110 publications

(71 citation statements)

References 49 publications

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“…A wavy microstructure was introduced in this work to improve the pressure sensitivity . It was evident that the microstructured electrode led to a great improvement in performance.…”

Section: Resultsmentioning

confidence: 99%

“…Among them, capacitive pressure sensors utilizing ap ressure-induced capacitance change have received significant attention for their low energy consumption, fast response time, low detection limit, and sensing stability. [25][26][27] Recently,1 Ds ilver nanowires (AgNWs) [28][29][30][31][32][33] and 2D graphene [34][35][36][37] have been applieda sa na ttractive electrode or dielectric filler for capacitive sensors,d ue to their outstanding electricalc onductivity and flexibility.F or instance, Jun Wang et al [38] reported ap ressure sensor fabricated using AgNW electrodes and an interlayer comprising elastomeric composites filled with AgNWs. Theresulting pressure sensore xhibited good flexibility and sensing stability.B anseok Youe tal.…”

Section: Introductionmentioning

confidence: 99%

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An Omni‐Healable and Highly Sensitive Capacitive Pressure Sensor with Microarray Structure

Liu

Han

Ling

et al. 2018

Chemistry A European J

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Capacitive pressure sensors with high flexibility, sensitivity, and excellent healable properties are desirable for a wide variety of applications, such as e-skin. However, implementing these characteristics onto a device presently remains a great challenge. In this work, a flexible pressure sensor with high sensitivity and strong healable properties has been developed based on healable polyurethane (HPU), silver nanowires and graphene. The HPU-based microstructured capacitive pressure sensor exhibited a high sensitivity of 1.9 kPa (<3 kPa), a fast response time (<100 ms), low detection limit (10 Pa), and long-term durability (1000 cycles). Touch-finger and vocal-cord vibration detection have been demonstrated and exhibit a high sensitivity to both static and dynamic pressure. More notably, the entire pressure sensor including the dielectric layer and electrodes is omni-healable after complete separation. The prototype has experimentally shown tremendous potential for wearable, healable applications, such as healthcare monitoring and human-machine interfaces.

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“…A wavy microstructure was introduced in this work to improve the pressure sensitivity . It was evident that the microstructured electrode led to a great improvement in performance.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Omni‐Healable and Highly Sensitive Capacitive Pressure Sensor with Microarray Structure

Liu

Han

Ling

et al. 2018

Chemistry A European J

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“…WO x can also reduce gases such as H 2 , CH 4 , CO x (Stankova et al, 2005), and C 2 H 5 OH (Vallejos et al, 2015). Although WO 2.72 has the largest oxygen deficiency, it has greater potential in this field (Wang et al, 2018). prepared WO 3 nanorod/sulfonated reduced graphene oxides (WO 3 /S-rGO), which showed fast response recovery characteristics at all concentrations of NO 2 gas, indicating its good response and recovery properties for sensor applications.…”

Section: Gas Sensorsmentioning

confidence: 99%

Recent Advances in Tungsten-Oxide-Based Materials and Their Applications

et al. 2019

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Among several active photothermal nanomaterials, tungsten-oxide-based materials have received considerable attention recently because of their ability to absorb near-infrared (NIR) light and their efficient light-to-heat conversion properties. In addition, tungsten-oxide-based materials have an unusual oxygen defect structure and strong local surface plasma resonance (LSPR), which offers strong photoabsorption in a broad wavelength range of the NIR region. In the past, several light-absorbing nanomaterials such as noble metals, polymeric materials, and other inorganic nanomaterials were of interest for their use in photothermal therapy for cancer treatment. In this study, we review the synthesis, properties, and applications of tungsten-oxide-based nanomaterials as a new type of photothermal material. The basic ideas behind photothermal nanomaterial development as well as the factors that influence their structural designs are also discussed in this study. In addition, recent progress in various fields such as NIR light-shielding, pyroelectric, water evaporation, photocatalysis, gas sensors, and energy-related applications for WO 3−x-and M x WO 3-based nanomaterials (including their hybrids) are highlighted. Finally, this review presents promising insights into this rapidly growing field that may inspire additional research leading to practical applications.

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“…NO 2 seems to be the most investigated room temperature sensing target, not only because its toxicity, but also its electrophilic characteristics that improve the gas chemical adsorption reaction on the surface of sensing materials. Many efforts have been dedicated to control the structures of 3D rGO/MOx sensing materials for enhanced NO 2 sensing properties at room temperature [ 65 , 76 , 79 , 80 , 84 , 90 , 92 , 106 , 107 , 108 ].…”

Section: Applications Of 3d Graphene/mox Hybrids For Room Temperatmentioning

confidence: 99%

3D Architectured Graphene/Metal Oxide Hybrids for Gas Sensors: A Review

Xia

Chen

et al. 2018

Sensors

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Graphene/metal oxide-based materials have been demonstrated as promising candidates for gas sensing applications due to the enhanced sensing performance and synergetic effects of the two components. Plenty of metal oxides such as SnO2, ZnO, WO3, etc. have been hybridized with graphene to improve the gas sensing properties. However, graphene/metal oxide nanohybrid- based gas sensors still have several limitations in practical application such as the insufficient sensitivity and response rate, and long recovery time in some cases. To achieve higher sensing performances of graphene/metal oxides nanocomposites, many recent efforts have been devoted to the controllable synthesis of 3D graphene/metal oxides architectures owing to their large surface area and well-organized structure for the enhanced gas adsorption/diffusion on sensing films. This review summarizes recent advances in the synthesis, assembly, and applications of 3D architectured graphene/metal oxide hybrids for gas sensing.

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Highly sensitive and rapidly responding room-temperature NO2 gas sensors based on WO3 nanorods/sulfonated graphene nanocomposites

Cited by 110 publications

References 49 publications

An Omni‐Healable and Highly Sensitive Capacitive Pressure Sensor with Microarray Structure

An Omni‐Healable and Highly Sensitive Capacitive Pressure Sensor with Microarray Structure

Recent Advances in Tungsten-Oxide-Based Materials and Their Applications

3D Architectured Graphene/Metal Oxide Hybrids for Gas Sensors: A Review

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