Ascertaining the factors that influence the vapor sensor response: The entire case of MWCNT network sensor

Benlikaya, Ruhan; Slobodian, Petr; Proisl, Karel; Cvelbar, Uroš; Морозов, И. А.

doi:10.1016/j.snb.2018.11.160

Cited by 5 publications

(2 citation statements)

References 53 publications

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“…If the interparticle contact creates a narrow neck limiting the overall conductivity, the adsorption of gaseous molecules will influence the resistance response of such a material as much as it changes the quality of these contacts. Our previous work on carbon nanotube entanglements demonstrated this sensing mechanism [9,10].…”

Section: Introductionmentioning

confidence: 88%

Giant Response and Selectivity of Hansen Solubility Parameters-Based Graphene-SBS Co-Polymer Matrix Composite Room Temperature Sensor to Organic Vapours

Slobodian,

Olejnik,

Dmonte

et al. 2024

Polymers

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A styrene-butadiene-styrene co-polymer matrix nanocomposite filled with graphene nanoplatelets was studied to prepare chemiresistive volatile organic compounds (VOCs) room temperature sensors with considerable response and selectivity. Nanofiller concentration was estimated from the electrical conductivity percolation behaviour of the nanocomposite. Fabricated sensors provided selective relative responses to representative VOCs differing by orders of magnitude. Maximum observed average relative responses upon exposure to saturated vapours of the tested VOCs were ca. 23% for ethanol, 1600% for acetone, and the giant values were 9 × 106% for n-heptane and 10 × 106% for toluene. The insensitivity of the sensor to the direct saturated water vapour exposure was verified. Although high humidity decreases the sensor’s response, it paradoxically enhances the resolution between hydrocarbons and polar organics. The non-trivial sensing mechanism is explained using the Hansen solubility parameters (HSP), enabling a rational design of new sensors; thus, the HSP-based class of sensors is outlined.

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Section: Introductionmentioning

confidence: 88%

Giant Response and Selectivity of Hansen Solubility Parameters-Based Graphene-SBS Co-Polymer Matrix Composite Room Temperature Sensor to Organic Vapours

Slobodian,

Olejnik,

Dmonte

et al. 2024

Polymers

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“…e extraordinary potencies of CNTs, including high elasticity [30], high thermal and electrical conductivity [31,32], remarkable optical properties [33], and extreme aspect ratio, made them suitable for a wide range of applications such as energy storage systems, composites, sensors [34,35], molecule transportation and protein carriers [36], tissue engineering, and photothermal therapy [37][38][39][40][41]. In light of the enormous advantages of CNTs in biological applications, the carbon-based nanomedicine has been considered by many multidisciplinary researchers.…”

Section: Introductionmentioning

confidence: 99%

Au-O-MWCNTs and TiO2-O-MWCNTs as Efficient Nanocarriers for Dexamethasone: Adsorption Isotherms and Kinetic Studies

Haghighi

Khoshfetrat

2021

International Journal of Chemical Engineering

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In this research, the fabrication of drug delivery systems based on oxidized multiwall carbon nanotubes (O-MWCNTs) was studied. Herein, TiO2 and Au were conjugated with O-MWCNTs to prepare efficient nanocarriers for dexamethasone (dex). The samples were characterized by Fourier transform infrared (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD). In addition, dex loading was studied using adsorption isotherms including Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich. The results show that dex adsorption agreed well with the Freundlich isotherm. Increasing the TiO2 to O-MWCNT ratio from (1 : 4) to (1 : 2) can improve the adsorption capacity from 290 mg ⋅ g − 1 to 320 320 mg ⋅ g − 1 . The increasing Au amount increases the adsorption capacity from 437.78 mg ⋅ g − 1 (SA1) to maximum 476.19 mg ⋅ g − 1 (SA6). The maximum equilibrium binding energy A T 1.67 L ⋅ mg − 1 was obtained for SA2, and SA7 shows high binding strength between dex and the nanoadsorbent. Carbon nanotubes (CNTs) show good affinity with high loading capabilities for dexamethasone adsorption. The synthesized TiO2-O-MWCNTs:1/2 with the maximum removal percent (80%) was proposed as an appropriate nanocarrier for dexamethasone. Pseudo-first order, pseudo-second order, Elovich, and intraparticle diffusion models were investigated for all synthesized drug nanocarriers. According to regression coefficients, experimental data are in good agreement with the pseudo-second order model for all adsorbents except O-MWCNT/CTAB. Experimental results revealed that the Elovich model could account for the O-MWCNT/CTAB adsorbent.

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Role of interface interactions in the sensitivity of sulfur-modified single-walled carbon nanotubes for nitrogen dioxide gas sensing

Sedelnikova

Sysoev

Gurova

et al. 2022

Carbon

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Ascertaining the factors that influence the vapor sensor response: The entire case of MWCNT network sensor

Cited by 5 publications

References 53 publications

Giant Response and Selectivity of Hansen Solubility Parameters-Based Graphene-SBS Co-Polymer Matrix Composite Room Temperature Sensor to Organic Vapours

Giant Response and Selectivity of Hansen Solubility Parameters-Based Graphene-SBS Co-Polymer Matrix Composite Room Temperature Sensor to Organic Vapours

Au-O-MWCNTs and TiO2-O-MWCNTs as Efficient Nanocarriers for Dexamethasone: Adsorption Isotherms and Kinetic Studies

Role of interface interactions in the sensitivity of sulfur-modified single-walled carbon nanotubes for nitrogen dioxide gas sensing

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