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Title: The functionalization and characterization of multi-walled carbon nanotubes (MWCNTs)

Functionalization is the process of introducing chemical functional groups on the surface of the material. In this study, a multi-walled carbon nanotube (MWCNTs) was functionalized by oxidation treatment using concentrated nitric acid. The functionalized and pristine MWCNTs were analyzed by using Fourier Transform Infrared Spectroscopy (FT-IR) and X-Ray Diffraction (XRD). The XRD patterns exhibit the graphitic properties for all samples. Besides, the XRD results also demonstrate that the percent of crystallinity of MWCNTs increases as the duration of acid treatment increases. The percent of crystallinity increases from 66% to 80% when the pristine MWCNT treated for 12 hours with additional 12 hours reflux process with nitric acid. The IR spectrum for the 12 hours-treated MWCNTs shows the formation of carboxyl functional group. Additional 12 hours reflux process with nitric acid on the 12 hours-treated MWCNTs have shown the loss of existing carboxyl group and only hydroxyl group formed.
Authors:
 [1] ;  [2] ;  [1]
  1. School of Chemical Sciences and Food Technology, Faculty Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor (Malaysia)
  2. (ALIR), Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor (Malaysia)
Publication Date:
OSTI Identifier:
22489000
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1678; Journal Issue: 1; Conference: Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2015 Postgraduate Colloquium, Selangor (Malaysia), 15-16 Apr 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION SPECTROSCOPY; CARBON NANOTUBES; FOURIER TRANSFORMATION; GRAPHITE; HYDROXIDES; INFRARED SPECTRA; NITRIC ACID; OXIDATION; SURFACES; X-RAY DIFFRACTION