Carbon nanotubes/polyaniline as hydrogen gas sensor: Optical bandgap, micro-morphology, and skin depth studies
Source abstract
Abstract
In this study, multiwall carbon nanotubes (MWCNTs)/polyaniline nanocomposites deposited on ITO coated glass as substrate by the spin-coating technique were applied to the investigation of the effect of different contents of MWCNTs on the optical and electrical properties of polyaniline. Micrographs from an atomic force microscope were taken to analyze the 3-D microtexture parameters of surface texture factors and fractal dimension. By using optical spectroscopy of samples with different concentrations of MWNCTs in visible and ultraviolet regions, the transmission variations vs photon wavelength, optical bandgap, absorption coefficient, and skin depth were studied. The variation in the resistance of nanocomposite films exposed to 0.4 %vol of H2 gas at room temperature was monitored, and the results indicated that the sensitivity and responsibility of the composites increased with an increase in the MWCNT amount.
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Research context
OpenAlex topics: Conducting polymers and applications · Analytical Chemistry and Sensors · Advanced Sensor and Energy Harvesting Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Quantum Technologies Research Center (QTRC), Science and Research Branch, Islamic Azad University 1 , Tehran, Iran
Physics Department, Islamic Azad University, West Tehran Branch 2 , Tehran, Iran
The Directorate of Research, Development and Innovation Management (DMCDI), Technical University of Cluj-Napoca 3 , Cluj-Napoca, Cluj County, Romania
4Department of Theoretical PHYSICS and Nano, Faculty of physics, Alzahra University, Tehran 1993891167, Iran
References (27)
Show source-provided references
1. Conducting polyaniline/SnO2 nanocomposite for room temperature hydrogen gas sensing10.1016/j.matpr.2019.04.106 ↗
2. Poly (3-aminobenzoic acid) @ MWCNTs hybrid conducting nanocomposite: preparation, characterization, and application as a coating for copper corrosion protection10.1080/09276440.2016.1156966 ↗
3. Preparation and characterization of tantalum/polyaniline composite based chemiresistor type sensor for hydrogen gas sensing application10.1016/j.ijhydene.2011.04.155 ↗
4. Hybrid conducting nanocomposites coatings for corrosion protection10.5772/57278 ↗
5. Dispersion and alignment of carbon nanotubes in polymer matrix: A review10.1016/j.mser.2005.04.002 ↗
6. Study of chemiresistor type CNT doped polyaniline gas sensor10.1016/j.synthmet.2009.11.022 ↗
7. Effects of contents of multiwall carbon nanotubes in polyaniline films on optical and electrical properties of polyaniline10.1088/0256-307x/33/11/117801 ↗
8. Investigation on hydrogen sensing property of MWCNT/Pani nanocomposite films10.1007/s00289-019-02915-8 ↗
9. Advanced microstructure, morphology and CO gas sensor properties of Cu/Ni bilayers at nanoscale10.1038/s41598-022-16347-4 ↗
10. Application of Mie theory and fractal models to determine the optical and surface roughness of Ag–Cu thin films10.1007/s11082-017-1079-3 ↗
11. The effects of deposition time on surface morphology, structural, electrical and optical properties of sputtered Ag-Cu thin films10.1140/epjp/i2016-16381-2 ↗
12. Microstructure and optical properties of cobalt–carbon nanocomposites prepared by RF-sputtering10.1007/s10854-015-3170-5 ↗
13. Microstructure, fractal geometry and dye-sensitized solar cells performance of CdS/TiO2 nanostructures10.1016/j.jelechem.2018.10.037 ↗
14. Thermal stability of amorphous tungsten/tungsten nitride synthesis using HFCVD as a diffusion barrier for copper10.1007/s00339-016-0045-4 ↗
15. Correlation between the multifractal structure, crystalline and photoluminescence properties of engineered CZO thin films10.1016/j.ijhydene.2017.04.045 ↗
16. Micromorphology investigation of GaAs solar cells: Case study on statistical surface roughness parameters10.1007/s10854-017-7422-4 ↗
17. Microstructure and optical properties of Cu@ Ni nanoparticles embedded in a-C:H10.1134/s2070205115040036 ↗
18. Structural, optical and thermal properties of silver colloidal nanoparticles10.1051/epjap/2012110310 ↗
19. The effect of different laser irradiation on rugometric and microtopographic features in zirconia ceramics: Study of surface statistical metrics10.1016/j.jallcom.2018.06.213 ↗
20. Gwyddion 2.53 software (Copyright © 2004-2007, 2009-2014 Petr Klapetek, David Nečas, Christopher Anderson). Available from: http://gwyddion.net (accessed on 18 August 2022).
21. ISO 25178-2: 2012, Geometrical product specifications (GPS) - Surface texture: Areal - Part 2: Terms, definitions and surface texture parameters. Available from: http://www.iso.org (accessed on 18 August 2022).
22. Structural and optical properties of ZnO and Ni:ZnO thin films: The trace of post-annealing10.1007/s10854-020-05092-x ↗
23. Investigation of post-annealing effect on Al: ZnO thin films crystallinity and photoluminescence properties10.1016/j.physb.2021.413461 ↗
24. Influence of AZO amorphous structure on n-AZO/p-Cu2O heterojunction diode photoluminescence properties10.1007/s10854-017-6678-z ↗
25. Hydrogen gas sensors based on semiconductor oxide nanostructures10.3390/s120505517 ↗
26. Effect of thickness and annealing on structural and optical properties of Bi2Te3 thin films prepared from Bi2Te3 nanoparticels10.12785/ijtfst/030103 ↗
27. Effect of nitrogen content on optical constants of copper nitride thin films prepared by Dc magnetron reactive sputtering