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Title: Effects of O 2 plasma and UV-O 3 assisted surface activation on high sensitivity metal oxide functionalized multiwalled carbon nanotube CH 4 sensors

Abstract

We present a comparative analysis of UV-O 3 (UVO) and O 2 plasma-based surface activation processes of multi-walled carbon nanotubes (MWCNTs) enabling highly effective functionalization with metal oxide nanocrystals (MONCs). Experimental results from transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy show that by forming COOH (carboxyl), C-OH (hydroxyl), and C=O (carbonyl) groups on the MWCNT surface that act as active nucleation sites, O 2 plasma and UVO-based dry pre-treatment techniques greatly enhance the affinity between MWCNT surface and the functionalizing MONCs. MONCs, such as ZnO and SnO 2, deposited by atomic layer deposition (ALD) technique, were implemented as the functionalizing material following UVO and O 2 plasma activation of MWCNTs. In conclusion, a comparative study on the relative resistance changes of O 2 plasma and UVO activated MWCNT functionalized with MONC in the presence of 10 ppm methane (CH 4) in air, is presented as well.

Authors:
 [1];  [1];  [2];  [2];  [1];  [3];  [4];  [1]
  1. Univ. of Illinois, at Chicago, Chicago, IL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. U.S. Environmental Protection Agency, Las Vegas, NV (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Scientific User Facilities Division
OSTI Identifier:
1393949
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Vacuum Science and Technology. A, Vacuum, Surfaces and Films
Additional Journal Information:
Journal Volume: 35; Journal Issue: 6; Journal ID: ISSN 0734-2101
Publisher:
American Vacuum Society
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 54 ENVIRONMENTAL SCIENCES; Carbon Nanotube; Gas sensor; Methane

Citation Formats

Humayun, Md Tanim, Sainato, Michela, Divan, Ralu, Rosenberg, Richard A., Sahagun, Alvaro, Gundel, Lara, Solomon, Paul A., and Paprotny, Igor. Effects of O2 plasma and UV-O3 assisted surface activation on high sensitivity metal oxide functionalized multiwalled carbon nanotube CH4 sensors. United States: N. p., 2017. Web. doi:10.1116/1.4993579.
Humayun, Md Tanim, Sainato, Michela, Divan, Ralu, Rosenberg, Richard A., Sahagun, Alvaro, Gundel, Lara, Solomon, Paul A., & Paprotny, Igor. Effects of O2 plasma and UV-O3 assisted surface activation on high sensitivity metal oxide functionalized multiwalled carbon nanotube CH4 sensors. United States. doi:10.1116/1.4993579.
Humayun, Md Tanim, Sainato, Michela, Divan, Ralu, Rosenberg, Richard A., Sahagun, Alvaro, Gundel, Lara, Solomon, Paul A., and Paprotny, Igor. Fri . "Effects of O2 plasma and UV-O3 assisted surface activation on high sensitivity metal oxide functionalized multiwalled carbon nanotube CH4 sensors". United States. doi:10.1116/1.4993579. https://www.osti.gov/servlets/purl/1393949.
@article{osti_1393949,
title = {Effects of O2 plasma and UV-O3 assisted surface activation on high sensitivity metal oxide functionalized multiwalled carbon nanotube CH4 sensors},
author = {Humayun, Md Tanim and Sainato, Michela and Divan, Ralu and Rosenberg, Richard A. and Sahagun, Alvaro and Gundel, Lara and Solomon, Paul A. and Paprotny, Igor},
abstractNote = {We present a comparative analysis of UV-O3 (UVO) and O2 plasma-based surface activation processes of multi-walled carbon nanotubes (MWCNTs) enabling highly effective functionalization with metal oxide nanocrystals (MONCs). Experimental results from transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy show that by forming COOH (carboxyl), C-OH (hydroxyl), and C=O (carbonyl) groups on the MWCNT surface that act as active nucleation sites, O2 plasma and UVO-based dry pre-treatment techniques greatly enhance the affinity between MWCNT surface and the functionalizing MONCs. MONCs, such as ZnO and SnO2, deposited by atomic layer deposition (ALD) technique, were implemented as the functionalizing material following UVO and O2 plasma activation of MWCNTs. In conclusion, a comparative study on the relative resistance changes of O2 plasma and UVO activated MWCNT functionalized with MONC in the presence of 10 ppm methane (CH4) in air, is presented as well.},
doi = {10.1116/1.4993579},
journal = {Journal of Vacuum Science and Technology. A, Vacuum, Surfaces and Films},
number = 6,
volume = 35,
place = {United States},
year = {Fri Jul 28 00:00:00 EDT 2017},
month = {Fri Jul 28 00:00:00 EDT 2017}
}

Journal Article:
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