Basic of CNT

1. Supervisor
Dr. Ritu Sharma
Dr. Anup K. Sharma
Presented by
Divakar Kumar
ID: 2019REC9168
DOR: 01/08/2019
Registration type: Part Time (NPIU)
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING
MALAVIYA NATIONAL INSTITUTE OF TECHNOLOGY JAIPUR
Dec 2019
DREC Members
Prof Vijay Janyani
Prof Ghanshyam Singh
Dr Ravi Maddila
Dr. Sarthak Singal

2. Course Work (First Semester)
SUBJECTS CREDITS GRADES
Semiconductor Devices 03
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3. Research Field and Approach
• Fabrication of nanomaterials thin films, characterization and Optimization.
• Thin film application (heavy metal detection in water).
• To explore other application of thin films.
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4. Research area identified
• Fabrication of thin film nano-sensor.
• Characterization of the thin film nano-sensors.
• Enhancing the sensitivity and selectivity of nano-sensors for different
application.
• Calibration of nano-sensors for the detection of heavy metal in water.
• Calibration of nano-sensors for other application.
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5. Work Done so far
 Introduction to the topic.
 Literature review.
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6. Introduction
• Carbon nanotubes (CNTs) have triggered enormous world-wide interest
since it was discovered in 1991 by Iijima.
• CNTs are built from sp2 carbon units and present a seamless structure with
hexagonal honeycomb lattices.
• Basically, there are two types of CNTs: Single-walled carbon nanotubes
(SWCNTs) and multi-walled carbon nanotubes (MWCNTs).
• SWCNTs are single graphene rolls with diameters of 0.8 to a few
nanometers.
• MWCNTs are concentric graphene tubes that can have diameters from a
few to more than a hundred nanometers.
• The electrical properties of CNTs are depended on the arrangement of the
graphene.
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7. Introduction
• CNTs based thin films have been prepared by various techniques.
• common techniques for coating and decorating CNTs films:
• Spray-coating
• Dip-coating
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8. Spray-coating
• Spray-coating involves spraying CNTs dispersion onto a heated substrate
where every sprayed droplet reaches the hot substrate surface and under-
goes pyrolytic decomposition, consequently forms a thin layer of CNTs
film.
• The excess solvent and by products escape to the air through the vapor
phase.
• The major advantage of spray-coating process is the ability of forming
large area and thick films.
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9. Dip-coating
• Dip-coating is a facile solution based surface coating method providing
great potential to scale up for largescale coating and does not require
sophisticated apparatus.
• Essentially, the substrate is immersed into the CNTs based dispersion at a
constant speed and remains inside for a period of time then starts to be
pulled up.
• The pull up process needs a constant speed on carrying out to avoid any
jitters.
• A thin layer of dispersion will be picked- up with the substrate and a thin
film forms after the drying process
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10. Literature Review
Title Author Remarks
CARBON NANOTUBES
BASED THIN FILMS:
FABRICATION,
CHARACTERIZATION AND
APPLICATIONS
L. Fu and A. M. Yu Basic idea of the
fabrication of carbon
nanotube based thin films
and the versatile
techniques for film
characterization.
Applications of carbon
nanotube based thin films
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11. References
1. Chen, C. L.; Wang, X. K. Adsorption of Ni(II) from aqueous solution using oxidized
multi-walled carbon nanotubes. Ind. Eng. Chem. Res. 2006, 45, 9144–9149.
2. Moreno-Castilla, C.; Alvarez-Merino, M. A.; Lopez-Ramon, M. V.; Rivera-Utrilla, J.
Cadmium ion adsorption on different carbon adsorbents from aqueous solutions.
Effect of surface chemistry, pore texture, ionic strength and dissolved natural
organic matter. Langmuir 2004, 20, 8142–8148.
3. Goel, J.; Kadirvelu, K.; Rajagopal, C.; Garg, V. K. Cadmium(II) uptake from
aqueous solution by adsorption onto carbon aerogel using a response surface
methodological approach. Ind. Eng. Chem. Res. 2006, 45, 6531–6537.
4. Rengaraj, S.; Moon, S. H. Kinetics of adsorption of Co(II) removal from water and
wastewater by ion exchange resins. Water Res. 2002, 36, 1783–1793.
5. Matlock, M. M.; Howerton, B. S.; Atwood, D. A. Chemical precipitation of lead from
lead battery recycling plant wastewater. Ind. Eng. Chem. Res. 2002, 41, 1579–1582.
6. Yang, S. B.; Hu, J.; Chen, C. L.; Shao, D. D.; Wang, X. K. Mutual effect of Pb(II) and
humic acid adsorption onto multiwalled carbon nanotubes/poly(acrylamide)
composites from aqueous solution. Environ. Sci. Technol. 2011, 45, 3621–3627.
7. C. Zhang, L. Ren, X. Wang and T. Liu, J. Phys. Chem. C, 2010, 114, 11435.
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