Carbon‐based light‐induced thermoelastic spectroscopy for ammonia gas sensing

Wang, Yu; Cheng, Thomas C.; Lou, Cunguang; Liu, Xin; Li, Xitong; Huang, Lei; Yao, Jianquan; Liu, Xiuling

doi:10.1002/mop.33156

Cited by 5 publications

(1 citation statement)

References 32 publications

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“…In a recent survey, the effect of three different carbon-based nanosensing materials, including CNTs, GO, and reduced graphene oxide (rGO), coated on a quartz tuning fork (i.e., the detector of the system), was studied by measuring trace amounts of NH3 gas. This lowcost sensing device revealed the minimum LOD of 7.27 ppm for NH3 gas at optimized conditions for the rGO-coated sensor [186].…”

Section: Ammonia (Nh 3 )mentioning

confidence: 97%

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Hooshmand,

Kassanos,

Keshavarz

et al. 2023

Sensors

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With a rising emphasis on public safety and quality of life, there is an urgent need to ensure optimal air quality, both indoors and outdoors. Detecting toxic gaseous compounds plays a pivotal role in shaping our sustainable future. This review aims to elucidate the advancements in smart wearable (nano)sensors for monitoring harmful gaseous pollutants, such as ammonia (NH3), nitric oxide (NO), nitrous oxide (N2O), nitrogen dioxide (NO2), carbon monoxide (CO), carbon dioxide (CO2), hydrogen sulfide (H2S), sulfur dioxide (SO2), ozone (O3), hydrocarbons (CxHy), and hydrogen fluoride (HF). Differentiating this review from its predecessors, we shed light on the challenges faced in enhancing sensor performance and offer a deep dive into the evolution of sensing materials, wearable substrates, electrodes, and types of sensors. Noteworthy materials for robust detection systems encompass 2D nanostructures, carbon nanomaterials, conducting polymers, nanohybrids, and metal oxide semiconductors. A dedicated section dissects the significance of circuit integration, miniaturization, real-time sensing, repeatability, reusability, power efficiency, gas-sensitive material deposition, selectivity, sensitivity, stability, and response/recovery time, pinpointing gaps in the current knowledge and offering avenues for further research. To conclude, we provide insights and suggestions for the prospective trajectory of smart wearable nanosensors in addressing the extant challenges.

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Section: Ammonia (Nh 3 )mentioning

confidence: 97%

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Hooshmand,

Kassanos,

Keshavarz

et al. 2023

Sensors

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Highly Selective Chemiresistive SO2 Sensor Based on a Reduced Graphene Oxide/Porphyrin (rGO/TAPP) Composite

Khune,

Padghan,

Bongane

et al. 2023

J. Electron. Mater.

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The emergence of toxic pollutants due to heavy human intervention in the ecosystem causes serious environmental problems. Therefore, sensors based on material having a strong affinity towards specific environmental gaseous pollutants are urgently needed. The present study deals with chemiresistive gas sensors for the detection of sulfur dioxide (SO2) based on a composite of reduced graphene oxide (rGO) and 5,10,15,20-tetrakis(4-aminophenyl) porphyrin (TAPP). The improved Hummers method was used to synthesize graphene oxide (GO); it was further thermally reduced to rGO. The pattern of the copper electrode was coated on glass slides with a shadow mask using thermal evaporation. Then, GO was drop-cast between the two copper electrodes, thermally reduced to obtain rGO, and then modified by TAPP. The spectroscopic, structural, morphological, electrical, and optical studies were carried out using Fourier transform infrared spectroscopy, x-ray diffraction, Raman spectroscopy, atomic force microscopy, field emission scanning electron microscopy, current–voltage (I–V) and UV–visible spectroscopy, respectively. The developed sensor shows high selectivity towards SO2 gas analytes among exposed gaseous analytes. It exhibited reproducible response from 50 ppm to 200 ppm with enhanced repeatability at 50 ppm. The rGO/TAPP sensor exhibited a significant response (57 s) and recovery time (61 s), with a 5 ppm limit of detection. Graphical Abstract

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A compact integrated dual-spectroscopy gas detection structure based on QEPAS and QEPTS using a QTF

Zhao

Zhang

et al. 2023

Infrared Physics & Technology

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Carbon‐based light‐induced thermoelastic spectroscopy for ammonia gas sensing

Cited by 5 publications

References 32 publications

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Highly Selective Chemiresistive SO2 Sensor Based on a Reduced Graphene Oxide/Porphyrin (rGO/TAPP) Composite

A compact integrated dual-spectroscopy gas detection structure based on QEPAS and QEPTS using a QTF

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