Catalytic growth of MWCNT using CVD and its application as opto-electronic humidity sensor

The present paper describes the effect of co-catalyst on the growth of multiwall carbon nanotube (MWCNT) by chemical vapor deposition (CVD) technique. The fascinating properties of CNT make them a suitable material for optoelectronic devices such as sensors, LED, solar cell, and field emission displ...

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Published inCarbon Letters Vol. 30; no. 2; pp. 215 - 224
Main Authors Singh, Ekta, Kumar, Utkarsh, Srivastava, Richa, Yadav, B. C.
Format Journal Article
LanguageEnglish
Published Singapore Springer Singapore 01.04.2020
한국탄소학회
Springer Nature B.V
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Abstract The present paper describes the effect of co-catalyst on the growth of multiwall carbon nanotube (MWCNT) by chemical vapor deposition (CVD) technique. The fascinating properties of CNT make them a suitable material for optoelectronic devices such as sensors, LED, solar cell, and field emission displays. MWCNTs were fabricated using CVD, by decomposing ethanol over finely dispersed Co metal as a catalyst at 750 °C. The effects of growth condition on the quality and morphology of MWCNTs were investigated by SEM, FTIR and XRD. SEM photographs show that the nanotubes are densely packed having a diameter of 10–15 nm. The bandgap was calculated by UV–visible spectroscopy and it was found varying from 3.08 to 3.5 eV by changing the substrates. The average size of tubes (length) was found to be 250 nm. FTIR exhibited that the synthesized MWCNTs were semiconducting in nature with the oxygen vacancies causing the variations in refractive index with the exposure of moisture.
AbstractList The present paper describes the effect of co-catalyst on the growth of multiwall carbon nanotube (MWCNT) by chemical vapor deposition (CVD) technique. The fascinating properties of CNT make them a suitable material for optoelectronic devices such as sensors, LED, solar cell, and field emission displays. MWCNTs were fabricated using CVD, by decomposing ethanol over finely dispersed Co metal as a catalyst at 750 °C. The effects of growth condition on the quality and morphology of MWCNTs were investigated by SEM, FTIR and XRD. SEM photographs show that the nanotubes are densely packed having a diameter of 10–15 nm. The bandgap was calculated by UV–visible spectroscopy and it was found varying from 3.08 to 3.5 eV by changing the substrates. The average size of tubes (length) was found to be 250 nm. FTIR exhibited that the synthesized MWCNTs were semiconducting in nature with the oxygen vacancies causing the variations in refractive index with the exposure of moisture.
The present paper describes the effect of co-catalyst on the growth of multiwall carbon nanotube (MWCNT) by chemical vapor deposition (CVD) technique. The fascinating properties of CNT make them a suitable material for optoelectronic devices such as sensors, LED, solar cell, and field emission displays. MWCNTs were fabricated using CVD, by decomposing ethanol over finely dispersed Co metal as a catalyst at 750 °C. The effects of growth condition on the quality and morphology of MWCNTs were investigated by SEM, FTIR and XRD. SEM photographs show that the nanotubes are densely packed having a diameter of 10–15 nm. The bandgap was calculated by UV–visible spectroscopy and it was found varying from 3.08 to 3.5 eV by changing the substrates. The average size of tubes (length) was found to be 250 nm. FTIR exhibited that the synthesized MWCNTs were semiconducting in nature with the oxygen vacancies causing the variations in refractive index with the exposure of moisture.
Author Kumar, Utkarsh
Srivastava, Richa
Yadav, B. C.
Singh, Ekta
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Snippet The present paper describes the effect of co-catalyst on the growth of multiwall carbon nanotube (MWCNT) by chemical vapor deposition (CVD) technique. The...
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SubjectTerms Carbon
Catalysts
Characterization and Evaluation of Materials
Chemical vapor deposition
Chemistry and Materials Science
Ethanol
Field emission
Growth conditions
Humidity
Literature reviews
Materials Engineering
Materials Science
Multi wall carbon nanotubes
Nanoparticles
Nanotechnology
Nanotubes
Optoelectronic devices
Original Article
Photovoltaic cells
Polyethylene glycol
Polyvinyl alcohol
Radiation
Refractivity
Sensors
Solar cells
Spectroscopy
Spectrum analysis
Substrates
Temperature
Thin films
TableOfContents Abstract 1 Introduction 2 Experimental methods 2.1 Catalyst preparation 2.2 Carbon nanotube preparation 2.3 Fabrication of sensing element 3 Results and discussion 3.1 SEM analysis 3.2 Electron dispersive X-ray 3.3 UV–visible spectroscopy 3.4 XRD analysis 3.5 Particle size analyzer 3.6 Fourier transform infrared spectroscopy 4 Application as optoelectronic humidity sensor 4.1 Using ITO substrate 4.2 Using boron-doped silica glass 4.3 Using fluorine-doped silica glass 5 Sensing mechanism 6 Conclusion Acknowledgements References
Title Catalytic growth of MWCNT using CVD and its application as opto-electronic humidity sensor
URI https://link.springer.com/article/10.1007/s42823-019-00090-4
http://db.koreascholar.com/Article/Detail/420507
https://www.proquest.com/docview/2932334298/abstract/
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