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Carbon Nanospheres: “Green” Synthesis, Characterization, and Growth Kinetics

Published online by Cambridge University Press:  01 February 2011

Mathilda Doorley ,
Sanjay R Mishra ,
Mohamad Laradji ,
Ram K Gupta  and
Kartik Ghosh
Mathilda Doorley
Affiliation:
The University of Memphis, Physics, 226 Manning Hall, Memphis, TN, 38152, United States, 901-678-3115, 901-678-4733
Sanjay R Mishra
Affiliation:
[email protected], The University of Memphis, Physics, Manning Hall, Memphis, TN, 38152, United States
Mohamad Laradji
Affiliation:
[email protected], The University of Memphis, Physics, Manning Hall, Memphis, TN, 38152, United States
Ram K Gupta
Affiliation:
[email protected], Missouri State University, Physics, Astronomy and Materials Science, Springfield, MO, 65897, United States
Kartik Ghosh
Affiliation:
[email protected], Missouri State University, Physics, Astronomy and Materials Science, Springfield, MO, 65897, United States
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Abstract

An attempt is made to understand the growth kinetics of carbon nanospheres (CNS) synthesized using a “green” technique. An aqueous solution of glucose, the precursor, was hydrothermally treated to produce porous CNS with homogeneous size distribution and smooth surfaces. The growth of CNS was studied by evaluating transmission electron microscope images as a function of hydrothermal reaction time and temperatures. Raman spectra revealed the presence of short-ordered graphitic nanostructures in an amorphous carbon matrix. FTIR spectroscopy confirms the carbonization of glucose and shows the presence of surface hydroxyl groups on CNSs. Based on various experimental observations it is proposed that the growth of CNSs is dictated by a reaction-controlled mechanism where long chain glucose-based oligomers bond to the CNS surface. The narrow size distribution and highly hydrophilic surface of these amorphous CNS makes them potential candidates for biomedical applications.

Keywords

carbonizationenvironmentally benignhydrothermal
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1054: Symposium FF – Synthesis and Surface Engineering of Three-Dimensional Nanostructures , 2007 , 1054-FF12-41
Copyright
Copyright © Materials Research Society 2008

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