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Nanostructure of Gasification Charcoal (Biochar).

08:00 EDT 13th March 2019 | BioPortfolio

Summary of "Nanostructure of Gasification Charcoal (Biochar)."

In this work, we investigate the molecular composition and nanostructure of gasification charcoal (biochar) by comparing it with heat-treated fullerene arc-soot. Using ultrahigh resolution Fourier transform ion-cyclotron resonance and laser desorption ionisation time of flight mass spectrometry, Raman spectroscopy and high resolution transmission electron microscopy we analysed charcoal of low tar content obtained from gasification. Mass spectrometry revealed no magic number fullerenes, such as C or C, in the charcoal. The positive molecular ion m/z 701, previously considered a graphitic part of the nanostructure, was found to be a breakdown product of pyrolysis and not part of the nanostructure. A higher mass distribution of ions similar to that found in thermally treated fullerene soot indicates that they share a nanostructure. Recent insights into the formation of all carbon fullerenes reveals that conditions in charcoal formation are not optimal for fullerenes to form, but instead curved carbon structures coalesce into fulleroid-like structures. Microscopy and spectroscopy support such a stacked, fulleroid-like nanostructure, which was explored using reactive molecular dynamics simulations.

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Name: Environmental science & technology
ISSN: 1520-5851
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Medical and Biotech [MESH] Definitions

An amorphous form of carbon prepared from the incomplete combustion of animal or vegetable matter, e.g., wood. The activated form of charcoal is used in the treatment of poisoning. (Grant & Hackh's Chemical Dictionary, 5th ed)

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