Carbon-based nanomaterials for the detection of volatile organic compounds: A review

Yin, Feifei; Yue, Wenjing; Li, Yang; Gao, Song; Zhang, Chunwei; Kan, Hao; Niu, Hongsen; Wang, Wenxiao; Guo, Ying

doi:10.1016/j.carbon.2021.04.080

Cited by 101 publications

(37 citation statements)

References 229 publications

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“…crystals and/or compact layers composed of intergrown MOF crystallites (e.g., HKUST-1, ZIF-8, MIL-100, MIL-53) can be obtained facilely by tuning the solution composition, voltage, current density, and/or deposition time. [50,53] Recently, Liu et al demonstrated the fabrication of large-area Cu 3 (2,3,6,7,10,11hexahydroxytriphenylene (HHTP)) 2 MOF films on single crystal Cu (100) anodes via a controllable electrochemical assembly approach (Figure 2a,b). [54] The atomically flat Cu anode surface facilitates the controllable release of Cu 2+ ions under a suitable voltage.…”

Section: Electrochemical Approachmentioning

confidence: 99%

“…Depending on the physicochemical nature of the gaseous analyte and/or type, relevant correlations between the variation in conductance of the sensing material and gas concentration can be therefore made. However, unlike the conventional MOS, [ 9,62 ] semiconductive organic polymers, [ 11 ] and layered carbon‐based materials, [ 10 ] most MOFs intrinsically exhibit low electrical conductivity due to the limited concentration of charge carriers and relatively poor mobility. [ 1b ] Given that, thin MOF layers with narrowed aperture size were intuitively coated outside the active layers of conventional MOS gas sensors as filter layers to permit selective passthrough of some gases.…”

Section: Mof‐based Devices For Gas Sensingmentioning

confidence: 99%

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Metal‐Organic Framework Based Gas Sensors

et al. 2021

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The ever-increasing concerns over indoor/outdoor air quality, industrial gas leakage, food freshness, and medical diagnosis require miniaturized gas sensors with excellent sensitivity, selectivity, stability, low power consumption, cost-effectiveness, and long lifetime. Metal-organic frameworks (MOFs), featuring structural diversity, large specific surface area, controllable pore size/geometry, and host-guest interactions, hold great promises for fabricating various MOF-based devices for diverse applications including gas sensing. Tremendous progress has been made in the past decade on the fabrication of MOF-based sensors with elevated sensitivity and selectivity toward various analytes due to their preconcentrating and molecule-sieving effects. Although several reviews have recently summarized different aspects of this field, a comprehensive review focusing on MOF-based gas sensors is absent. In this review, the latest advance of MOF-based gas sensors relying on different transduction mechanisms, for example, chemiresistive, capacitive/impedimetric, field-effect transistor or Kelvin probe-based, mass-sensitive, and optical ones are comprehensively summarized. The latest progress for making large-area MOF films essential to the mass-production of relevant gas sensors is also included. The structural and compositional features of MOFs are intentionally correlated with the sensing performance. Challenges and opportunities for the further development and practical applications of MOF-based gas sensors are also given.

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Section: Electrochemical Approachmentioning

confidence: 99%

Section: Mof‐based Devices For Gas Sensingmentioning

confidence: 99%

Metal‐Organic Framework Based Gas Sensors

et al. 2021

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“…From Figure 7a,e, it is clear that there is the dependence of the responsivity on the CNF density of the sensors. It is reasonable to assume that a high surface area supplies a larger number of surface-active sites for both oxygen adsorption [48] and surface reaction [49], resulting in a larger change in the surface properties of the CNF sensors and eventually increasing the gas responsivity. Discrete wavelet transforms (DWT) were employed in order to analyze the response signals of the gas sensors.…”

Section: Gas Sensing Measurementsmentioning

confidence: 99%

Enhancement of Room Temperature Ethanol Sensing by Optimizing the Density of Vertically Aligned Carbon Nanofibers Decorated with Gold Nanoparticles

et al. 2022

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An ethanol gas sensor based on carbon nanofibers (CNFs) with various densities and nanoparticle functionalization was investigated. The CNFs were grown by means of a Plasma-Enhanced Chemical Vapor Deposition (PECVD), and the synthesis conditions were varied to obtain different number of fibers per unit area. The devices with a larger density of CNFs lead to higher responses, with a maximal responsivity of 10%. Furthermore, to simultaneously improve the sensitivity and selectivity, CNFs were decorated with gold nanoparticles by an impaction printing method. After metal decoration, the devices showed a response 300% higher than pristine devices toward 5 ppm of ethanol gas. The morphology and structure of the different samples deposited on a silicon substrate were characterized by TEM, EDX, SEM, and Raman spectroscopy, and the results confirmed the presence of CNF decorated with gold. The influence of operating temperature (OT) and humidity were studied on the sensing devices. In the case of decorated samples with a high density of nanofibers, a less-strong cross-sensitivity was observed toward a variation in humidity and temperature.

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“…Carbon nanomaterials (CNM) like as: carbon fibers (CF), activated carbon (AC), nanotubes (CNTs), graphene (Gr), carbon quantum dots (CQDs), in view of their excellent physicochemical, sorption, mechanical and electrical properties, find wide application in various areas of human life [1][2][3][4][5]. So, for example, they are used in water purification [6][7][8][9][10], various energy-intensive systems [11,12], catalyst carriers [13][14][15], sensors [15][16][17][18][19], targeted delivery of drugs [20][21][22][23] and etc. Due to the wide range of applications for carbon nanomaterials, the development of economically viable and environmentally friendly methods for their production remains a topical issue.…”

Section: Introductionmentioning

confidence: 99%

Pitch-based carbon fibers: preparation and applications

Kaidar¹,

Смагулова²,

Imash³

et al. 2021

Горение и Плазмохимия

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Attention to carbon fiber (CF) conditioned by their unique physicochemical, mechanical and electrical properties, which makes them in demand in various fields of activity. Today there are several kinds of carbon fibers, most of which (about 90%) are made of polyacrylonitrile (PAN). Despite the fact that carbon fibers are produced from several types of different precursors, their widespread commercial use is limited by the high cost of the product. Has, many research and engineering group seek to reduce the cost of production by using cheap carbon raw materials. A likely solution to this problem is the exploitation of coal, petroleum and coal tar as an effective progenitor for CF production. This review discusses neoteric accomplishment in CF synthesis using various carbon pitches. The possibility of obtaining carbon fibers based on resin with the addition of PAN is presented, and the prospects for their use in energy storage systems and various reinforced composite materials are described in detail.

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Carbon-based nanomaterials for the detection of volatile organic compounds: A review

Cited by 101 publications

References 229 publications

Metal‐Organic Framework Based Gas Sensors

Metal‐Organic Framework Based Gas Sensors

Enhancement of Room Temperature Ethanol Sensing by Optimizing the Density of Vertically Aligned Carbon Nanofibers Decorated with Gold Nanoparticles

Pitch-based carbon fibers: preparation and applications

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