Investigation of Fe-P-B ultrafine amorphous nanomaterials: Influence of synthesis parameters on physicochemical and catalytic properties

Baskaran Rajesh, Natarajan Sasirekha, Shao Pai Lee, Hsin Yi Kuo, Yu Wen Chen

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

A series of Fe-P-B ultrafine amorphous alloy particles were synthesized by chemical reduction method to study the influence of iron precursors such as FeCl2·4H2O, FeCl3·6H2O, and Fe(OAc)2 and reaction medium (H2O, 50% ethanolic solution, and 50% isopropyl alcoholic solution). The physicochemical properties of the as-synthesized materials were characterized by X-ray diffraction, inductively coupled plasma-atomic emission spectroscopy, N2 sorption, transmission electron microscopy, X-ray photoelectron spectroscopy, and electron diffraction. The existence of amorphous nature of Fe-P-B materials was found to be retained even when the temperature was up to 300 °C. Use of different iron precursors and solvents in the preparation significantly influenced the structure, morphology, and composition of Fe-P-B nanoalloys. Dehydrogenation of ethanol has been carried out in order to evaluate the catalytic properties of the Fe-P-B nanoalloys and the results have been related to the surface properties of Fe-P-B nanoalloys. Fe-P-B prepared with FeCl2 in 50% ethanolic solution, showed the highest activity among all the Fe-P-B catalysts.

Original languageEnglish
Pages (from-to)69-75
Number of pages7
JournalJournal of Molecular Catalysis A: Chemical
Volume289
Issue number1-2
DOIs
StatePublished - 17 Jun 2008

Keywords

  • Fe-P-B
  • Nanoalloys
  • Solvent effect
  • TEM

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