4.6 Article

Simple in situ functionalization of carbon nanospheres

期刊

NANOTECHNOLOGY
卷 32, 期 8, 页码 -

出版社

IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/abc8b3

关键词

carbon nanospheres; CVD; functionalization

资金

  1. Puentes Consortium
  2. UDLAP

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Functionalized carbon nanospheres were synthesized in situ through a chemical vapor deposition strategy using toluene/ethanol mixtures, with the best functionalization achieved at 3 wt% ethanol concentration. The added functional groups enhanced the dispersibility and stability of the carbon nanostructures in water, making them potentially useful in biomedical applications requiring hydrophilic nanomaterials.
Functionalized carbon nanospheres have been synthesized in situ via a facile chemical vapor deposition strategy, fabricated by the pyrolysis of toluene/ethanol mixtures at different percentages (0, 1, 2, 3, 4, and 5 wt% of ethanol). The as-grown nanospheres have been characterized using transmission electron microscopy, scanning electron microscopy, Raman and Fourier transform infrared spectroscopy, x-ray diffraction, nitrogen adsorption, zeta potential measurements and x-ray photoelectron spectroscopy. Results indicate that the incorporation of ethanol in the precursor solution reflected in the presence of oxygen and hydrogen functional groups, the highest functionalized nanospheres without compromising the morphology of the sample were yielded at 3 wt% concentration. These in situ added functional groups rendered the carbon nanostructures enhancedly dispersible and stable in water, avoiding post-synthesis and harsh chemicals processing; envisaging thus applications of the nanospheres in the biomedical field where hydrophilicity of the nanomaterials is mandatory.

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