The use of Raman spectroscopy to characterize the carbon materials found in Amazonian anthrosoils

J. Ribeiro‐Soares; L. G. Cançado; N. P. S. Falcão; E. H. Martins Ferreira; C. A. Achete; A. Jorio

doi:10.1002/jrs.4191

journal article Oct 16, 2012

The use of Raman spectroscopy to characterize the carbon materials found in Amazonian anthrosoils

J. Ribeiro‐Soares L. G. Cançado N. P. S. Falcão E. H. Martins Ferreira C. A. Achete A. Jorio

Journal of Raman Spectroscopy Vol. 44 No. 2 pp. 283-289 · Wiley

View at Publisher Save 10.1002/jrs.4191

Abstract

This manuscript presents the Raman characterization of the stable carbon materials found in a special type of soil, named Terra Preta de Índio (Indian Dark Earths). The Terras Pretas de Índios have been studied as a potential model for sustainable agriculture in the humid tropics. The stability of organic matter and the long‐term high‐level of ion exchange capacity in these soils are due to unusually high amount of black carbon. Here, we show how Raman spectroscopy can be used to characterize the stable carbon content in the Terras Pretas de Índios (TPI‐carbons). The tangential stretching mode (G band) and the disorder‐induced mode (D band) are analyzed in comparison to laboratory‐produced amorphous carbons at different degree of disorder used here as reference materials. Statistical analysis show predominance of sp2 phase and crystallite sizes within the limit range between nanographite and amorphous carbons, while Raman mapping of a TPI‐carbon grain shows that the surface is more disordered than the grain core. The analysis used here can also differentiate the TPI‐carbon structures from different types of charcoal. Copyright © 2012 John Wiley & Sons, Ltd.

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Details

Published: Oct 16, 2012
Vol/Issue: 44(2)
Pages: 283-289
License: View

Authors

J

J. Ribeiro‐Soares

Departamento de Física, ICEx Universidade Federal de Minas Gerais Belo Horizonte MG 30123‐970 Brazil

L

L. G. Cançado

Departamento de Física, ICEx Universidade Federal de Minas Gerais Belo Horizonte MG 30123‐970 Brazil

N

N. P. S. Falcão

Departamento de Ciências Agronômicas Instituto Nacional de Pesquisas da Amazônia ‐ INPA Manaus AM 69011‐970 Brazil

E

E. H. Martins Ferreira

Divisão de Metrologia de Materiais ‐ DIMAT Instituto Nacional de Metrologia, Normalização e Qualidade Industrial ‐INMETRO Xerém Duque de Caxias RJ 25250‐020 Brazil

C

C. A. Achete

Divisão de Metrologia de Materiais ‐ DIMAT Instituto Nacional de Metrologia, Normalização e Qualidade Industrial ‐INMETRO Xerém Duque de Caxias RJ 25250‐020 Brazil

A

A. Jorio

Departamento de Física, ICEx Universidade Federal de Minas Gerais Belo Horizonte MG 30123‐970 Brazil

Funding

FAPEMIG (PPM and Pronex BioNC), CNPq (Universal grant), FINEP and FAPERJ

Cite This Article

J. Ribeiro‐Soares, L. G. Cançado, N. P. S. Falcão, et al. (2012). The use of Raman spectroscopy to characterize the carbon materials found in Amazonian anthrosoils. Journal of Raman Spectroscopy, 44(2), 283-289. https://doi.org/10.1002/jrs.4191

The use of Raman spectroscopy to characterize the carbon materials found in Amazonian anthrosoils

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