Mössbauer and Raman spectroscopic study of oxidation and reduction of iron oxide nanoparticles promoted by various carboxylic acid layers

Sebastiao William da Silva, Luciana Rebelo Guilherme, Aderbal Carlos de Oliveira, Vijayendra Kumar Garg, Pedro Augusto Matos Rodrigues, José Antonio Huamaní Coaquira, Queila da Silva Ferreira, Guilherme Henrique Ferreira de Melo, Attila Lengyel, Roland Szalay, Zoltán Homonnay, Zoltán Klencsár, Gyula Tolnai, Ernő Kuzmann

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The effect of coating with nine different carboxylic acids (glycolic, propionic, lactic, malic, tartaric, citric, mandelic, caproic and caprylic) on nanostructured magnetite (D ~ 10 nm) was studied by Raman and photoacoustic, magnetic and 57Fe Mössbauer measurements. Mössbauer spectra of frozen suspensions showed dominantly magnetically split envelopes at lower temperatures, which were evaluated by hyperfine field distribution method. Mössbauer and Raman spectroscopy indicated similar variation of relative occurrence of magnetite and maghemite phases. These results are discussed on the basis of the hypothesis that different carboxylic acids can promote either the oxidation or reduction of iron oxide nanoparticles.

Original languageEnglish
Pages (from-to)111-119
Number of pages9
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume312
Issue number1
DOIs
Publication statusPublished - Apr 1 2017

Keywords

  • Carboxylic acids
  • Maghemite/magnetite ratio
  • Mössbauer spectroscopy
  • Nanomagnetite
  • Photoacoustic spectroscopy
  • Raman spectroscopy

ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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  • Cite this

    da Silva, S. W., Guilherme, L. R., de Oliveira, A. C., Garg, V. K., Rodrigues, P. A. M., Coaquira, J. A. H., da Silva Ferreira, Q., de Melo, G. H. F., Lengyel, A., Szalay, R., Homonnay, Z., Klencsár, Z., Tolnai, G., & Kuzmann, E. (2017). Mössbauer and Raman spectroscopic study of oxidation and reduction of iron oxide nanoparticles promoted by various carboxylic acid layers. Journal of Radioanalytical and Nuclear Chemistry, 312(1), 111-119. https://doi.org/10.1007/s10967-017-5195-0