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Title: Physico-chemical studies of amorphous carbon nanotubes synthesized at low temperature

Abstract

Highlights: ► Amorphous carbon nanotubes are successfully produced via a simple method at low temperature. ► Nanotubes in straight morphologies with open ends. ► Acid treatment increases the extent of amorphous for nanotubes. ► Amorphous nanotubes exhibit phenomena of π plasmon absorbance and possess higher bandgap. -- Abstract: This work provides better understanding on the nature of amorphous carbon nanotubes, which are synthesized via a simple chemical route. Amorphous carbon nanotubes (α-CNTs) are successfully synthesized by heating a mixture of ferrocene and ammonium chloride at temperature as low as 200 °C and are treated with hydrochloric acid. Transmission and field emission scanning electron microscopy techniques are performed to examine the morphology and dimension of the samples. X-ray diffraction tests confirm the amorphous structure of the nanotubes. The Fourier transform infrared spectroscopy and Raman studies indicate that the treated α-CNTs consist of many defective walls and are more amorphous compared with the untreated α-CNTs. Ultraviolet–visible absorption studies reveal that the untreated and treated α-CNTs exhibit plasmon absorbance with high bandgaps of 4 eV and 4.35 eV, respectively.

Authors:
; ; ; ;  [1]
  1. Nanomaterials Engineering Research Group, Advanced Materials Research Laboratory, Department of Mechanical Engineering, University of Malaya, Lembah Pantai, Kuala Lumpur 50603 (Malaysia)
Publication Date:
OSTI Identifier:
22215160
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 8; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION; AMMONIUM CHLORIDES; CARBON NANOTUBES; FERROCENE; FIELD EMISSION; FOURIER TRANSFORM SPECTROMETERS; HYDROCHLORIC ACID; OPTICAL PROPERTIES; RAMAN SPECTROSCOPY; SCANNING ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Tan, Kim Han, E-mail: kimhan8419@gmail.com, Ahmad, Roslina, Leo, Bey Fen, Yew, Ming Chian, Ang, Bee Chin, and Johan, Mohd Rafie. Physico-chemical studies of amorphous carbon nanotubes synthesized at low temperature. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.04.073.
Tan, Kim Han, E-mail: kimhan8419@gmail.com, Ahmad, Roslina, Leo, Bey Fen, Yew, Ming Chian, Ang, Bee Chin, & Johan, Mohd Rafie. Physico-chemical studies of amorphous carbon nanotubes synthesized at low temperature. United States. https://doi.org/10.1016/J.MATERRESBULL.2012.04.073
Tan, Kim Han, E-mail: kimhan8419@gmail.com, Ahmad, Roslina, Leo, Bey Fen, Yew, Ming Chian, Ang, Bee Chin, and Johan, Mohd Rafie. 2012. "Physico-chemical studies of amorphous carbon nanotubes synthesized at low temperature". United States. https://doi.org/10.1016/J.MATERRESBULL.2012.04.073.
@article{osti_22215160,
title = {Physico-chemical studies of amorphous carbon nanotubes synthesized at low temperature},
author = {Tan, Kim Han, E-mail: kimhan8419@gmail.com and Ahmad, Roslina and Leo, Bey Fen and Yew, Ming Chian and Ang, Bee Chin and Johan, Mohd Rafie},
abstractNote = {Highlights: ► Amorphous carbon nanotubes are successfully produced via a simple method at low temperature. ► Nanotubes in straight morphologies with open ends. ► Acid treatment increases the extent of amorphous for nanotubes. ► Amorphous nanotubes exhibit phenomena of π plasmon absorbance and possess higher bandgap. -- Abstract: This work provides better understanding on the nature of amorphous carbon nanotubes, which are synthesized via a simple chemical route. Amorphous carbon nanotubes (α-CNTs) are successfully synthesized by heating a mixture of ferrocene and ammonium chloride at temperature as low as 200 °C and are treated with hydrochloric acid. Transmission and field emission scanning electron microscopy techniques are performed to examine the morphology and dimension of the samples. X-ray diffraction tests confirm the amorphous structure of the nanotubes. The Fourier transform infrared spectroscopy and Raman studies indicate that the treated α-CNTs consist of many defective walls and are more amorphous compared with the untreated α-CNTs. Ultraviolet–visible absorption studies reveal that the untreated and treated α-CNTs exhibit plasmon absorbance with high bandgaps of 4 eV and 4.35 eV, respectively.},
doi = {10.1016/J.MATERRESBULL.2012.04.073},
url = {https://www.osti.gov/biblio/22215160}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 8,
volume = 47,
place = {United States},
year = {Wed Aug 15 00:00:00 EDT 2012},
month = {Wed Aug 15 00:00:00 EDT 2012}
}