Carbon-metal oxide nanocomposites for selective detection of toxic and hazardous volatile organic compounds (VOC) – A review

Gakhar, Teena; Basu, S.; Hazra, Arnab

doi:10.1016/j.greeac.2022.100005

Cited by 15 publications

(5 citation statements)

References 66 publications

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“…The LOD of PVP-coated N-DWCNTs was 15 ppm. Although the LOD of PVP-coated N-DWCNTs sensor was much higher compared with previous reports [ 12 , 13 , 14 , 15 ], PVP-coated N-DWCNTs sensor can be used down to ppm-level formaldehyde detection at room temperature. The experimental study of pristine CNTs and their functionalization or composite materials for formaldehyde detection is summarized in Table S1 (Supplementary Materials) .…”

Section: Introductionmentioning

confidence: 65%

“…However, pristine CNTs are still insensitive to formaldehyde. Efforts have been made to develop the surface modification and nanocomposites of CNTs with metal oxides for improving formaldehyde detection [ 12 , 13 , 14 , 15 ]. For example, Wang et al [ 13 ] fabricated tin oxide-doped with hydroxyl functionalized MWCNTs (MWCNTs-doped SnO 2 ) for formaldehyde detection at approximately 125 to 375 °C.…”

Section: Introductionmentioning

confidence: 99%

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Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubes

Chobsilp

Threrujirapapong

Yordsri

et al. 2022

Sensors

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A highly sensitive and selective formaldehyde sensor was successfully fabricated using hybrid materials of nitrogen-doped double-walled carbon nanotubes (N-DWCNTs) and polyvinylpyrrolidone (PVP). Double-walled carbon nanotubes (DWCNTs) and N-DWCNTs were produced by high-vacuum chemical vapor deposition using ethanol and benzylamine, respectively. Purified DWCNTs and N-DWCNTs were dropped separately onto the sensing substrate. PVP was then dropped onto pre-dropped DWCNT and N-DWCNTs (hereafter referred to as PVP/DWCNTs and PVP/N-DWCNTs, respectively). As-fabricated sensors were used to find 1,2-dichloroethane, dichloromethane, formaldehyde and toluene vapors in parts per million (ppm) at room temperature for detection measurement. The sensor response of N-DWCNTs, PVP/DWCNTs and PVP/N-DWCNTs sensors show a high response to formaldehyde but a low response to 1,2-dichloroethane, dichloromethane and toluene. Remarkably, PVP/N-DWCNTs sensors respond sensitively and selectively towards formaldehyde vapor, which is 15 times higher than when using DWCNTs sensors. This improvement could be attributed to the synergistic effect of the polymer swelling and nitrogen-sites in the N-DWCNTs. The limit of detection (LOD) of PVP/N-DWCNTs was 15 ppm, which is 34-fold higher than when using DWCNTs with a LOD of 506 ppm. This study demonstrated the high sensitivity and selectivity for formaldehyde-sensing applications of high-performance PVP/N-DWCNTs hybrid materials.

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Section: Introductionmentioning

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubes

Chobsilp

Threrujirapapong

Yordsri

et al. 2022

Sensors

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“…They also have a large surface-to-volume ratio, high stability, high electrical conductivity, biocompatibility, reduced size, and an improved surface area. CNMs are being studied as a result of further utilization of efficient sensor technology. , …”

Section: Cnm-based Sensor For Voc Detectionmentioning

confidence: 99%

Carbon Nanostructure Embedded Novel Sensor Implementation for Detection of Aromatic Volatile Organic Compounds: An Organized Review

Nath

Kumar

Chakroborty³

et al. 2023

ACS Omega

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For field-like environmental gas monitoring and noninvasive illness diagnostics, effective sensing materials with exceptional sensing capabilities of sensitive, quick detection of volatile organic compounds (VOCs) are required. Carbon-based nanomaterials (CNMs), like CNTs, graphene, carbon dots (Cdots), and others, have recently drawn a lot of interest for their future application as an elevated-performance sensor for the detection of VOCs. CNMs have a greater potential for developing selective sensors that target VOCs due to their tunable chemical and surface properties. Additionally, the mechanical versatility of CNMs enables the development of novel gas sensors and places them ahead of other sensing materials for wearable applications. An overview of the latest advancements in the study of CNM-based sensors is given in this comprehensive organized review.

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“…Also, they are compatible with microelectromechanical systems (MEMS) technologies (Ali and Prasad, 2020). To date, a large number of studies on SAW sensors have been carried out to achieve a wide variety of functions to measure physical/mechanical (Hribšek et al , 2010; Tang et al , 2022; Wang et al , 2020; Yu, 2018; Tang et al , 2015; Kim et al , 2019; Tang et al , 2020a, 2020b; Gamba et al , 2014, Zhao et al , 2022a, 2022b; Tang et al , 2021; Li et al , 2020a, 2020b; Lü et al , 2014; Tang et al , 2018a; Feng et al , 2019; Fan et al , 2022; Tang et al , 2018b; Pan et al , 2021; Memon et al , 2021; Müller et al , 2015; Tang et al , 2017; Li et al , 2019; Yang et al , 2023), chemical (Zhang et al , 2020; Kumar and Prajesh, 2022; Abraham et al , 2019; Afzal et al , 2013; Gao et al , 2018; Pasupuleti et al , 2022a; Kus et al , 2021; Vanotti et al , 2021; Pasupuleti et al , 2021; Pasupuleti et al , 2022b; Zhu et al , 2021a, 2021b; Wang et al , 2022a, 2022b, 2022c, 2022d; Devkota et al , 2022; Grabka et al , 2021; Gakhar et al , 2022; Kabir et al , 2015; Harathi et al , 2020; Yang et al , 2017; Lim et al , 2011; Ghosh et al , 2019; Kuznetsova et al , 2018; Fahim et al , 2021; Wang et al , 2015; Wang et al , 2022a, 2022b, 2022c, 2022d; Xiong et al , 2021; Luo et al , 2021; Li et al , 2020a, 2020b; Devkota et al , 2020; Nikolaou et al , 2016; Tian et al , 2023) and biological (Rana et al , 2028; Zhang et al , 2017; Prabakaran et al , 2022…”

Section: Introductionmentioning

confidence: 99%

A review of surface acoustic wave sensors: mechanisms, stability and future prospects

Tang,

Wu,

Yang

et al. 2024

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Purpose Surface acoustic wave (SAW) sensors have attracted great attention worldwide for a variety of applications in measuring physical, chemical and biological parameters. However, stability has been one of the key issues which have limited their effective commercial applications. To fully understand this challenge of operation stability, this paper aims to systematically review mechanisms, stability issues and future challenges of SAW sensors for various applications. Design/methodology/approach This review paper starts with different types of SAWs, advantages and disadvantages of different types of SAW sensors and then the stability issues of SAW sensors. Subsequently, recent efforts made by researchers for improving working stability of SAW sensors are reviewed. Finally, it discusses the existing challenges and future prospects of SAW sensors in the rapidly growing Internet of Things-enabled application market. Findings A large number of scientific articles related to SAW technologies were found, and a number of opportunities for future researchers were identified. Over the past 20 years, SAW-related research has gained a growing interest of researchers. SAW sensors have attracted more and more researchers worldwide over the years, but the research topics of SAW sensor stability only own an extremely poor percentage in the total researc topics of SAWs or SAW sensors. Originality/value Although SAW sensors have been attracting researchers worldwide for decades, researchers mainly focused on the new materials and design strategies for SAW sensors to achieve good sensitivity and selectivity, and little work can be found on the stability issues of SAW sensors, which are so important for SAW sensor industries and one of the key factors to be mature products. Therefore, this paper systematically reviewed the SAW sensors from their fundamental mechanisms to stability issues and indicated their future challenges for various applications.

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Carbon-metal oxide nanocomposites for selective detection of toxic and hazardous volatile organic compounds (VOC) – A review

Cited by 15 publications

References 66 publications

Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubes

Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubes

Carbon Nanostructure Embedded Novel Sensor Implementation for Detection of Aromatic Volatile Organic Compounds: An Organized Review

A review of surface acoustic wave sensors: mechanisms, stability and future prospects

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