Solid-state water-mediated transport reduction of nanostructured iron oxides

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Solid-state water-mediated transport reduction of nanostructured iron oxides. / Smirnov, Vladimir M.; Povarov, Vladimir G.; Voronkov, Gennadii P.; Semenov, Valentin G.; Murin, Igor' V.; Gittsovich, Viktor N.; Sinel'nikov, Boris M.

In: Journal of Nanoparticle Research, Vol. 3, No. 1, 2001, p. 83-89.

Research output: Contribution to journal › Article › peer-review

Author

Smirnov, Vladimir M. ; Povarov, Vladimir G. ; Voronkov, Gennadii P. ; Semenov, Valentin G. ; Murin, Igor' V. ; Gittsovich, Viktor N. ; Sinel'nikov, Boris M. / Solid-state water-mediated transport reduction of nanostructured iron oxides. In: Journal of Nanoparticle Research. 2001 ; Vol. 3, No. 1. pp. 83-89.

BibTeX

@article{9f3da867cea44651b79d21fd6c5dcb5e,

title = "Solid-state water-mediated transport reduction of nanostructured iron oxides",

abstract = "The Fe2+/Fe3+ ratio in two-dimensional iron oxide nanosructures (nanolayers with a thickness of 0.3-1.5 nm on silica surface) may be precisely controlled using the transport reduction (TR) technique. The species ≡Si-O-Fe(OH)2 and (≡Si-O-)2-FeOH forming the surface monolayer are not reduced at 400-600°C because of their covalent bonding to the silica surface, as demonstrated by M{\"o}ssbauer spectroscopy. Iron oxide microparticles (microstructures) obtained by the impregnation technique, being chemically unbound to silica, are subjected to reduction at T ≥ 500°C with formation of metallic iron in the form of α-Fe. Transport reduction of supported nanostructures (consisting of 1 or 4 monolayers) at T ≥ 600°C produces bulk iron(II) silicate and metallic iron phases. The structural-chemical transformations occurring in transport reduction of supported iron oxide nanolayers are proved to be governed by specific phase processes in the nanostructures themselves.",

keywords = "Iron(III) oxide, Nanolayers, Nanostructure, Transport reduction",

author = "Smirnov, {Vladimir M.} and Povarov, {Vladimir G.} and Voronkov, {Gennadii P.} and Semenov, {Valentin G.} and Murin, {Igor' V.} and Gittsovich, {Viktor N.} and Sinel'nikov, {Boris M.}",

note = "Funding Information: The authors thank reviewers for helpful comments. The work was financially supported by the Russian Foundation for Basic Research (Project no. 99-03-32010) and the Scientific Schools Program (Project no. 00-15-97356).",

year = "2001",

doi = "10.1023/A:1011432925809",

language = "English",

volume = "3",

pages = "83--89",

journal = "Journal of Nanoparticle Research",

issn = "1388-0764",

publisher = "Springer Nature",

number = "1",

}

RIS

TY - JOUR

T1 - Solid-state water-mediated transport reduction of nanostructured iron oxides

AU - Smirnov, Vladimir M.

AU - Povarov, Vladimir G.

AU - Voronkov, Gennadii P.

AU - Semenov, Valentin G.

AU - Murin, Igor' V.

AU - Gittsovich, Viktor N.

AU - Sinel'nikov, Boris M.

N1 - Funding Information: The authors thank reviewers for helpful comments. The work was financially supported by the Russian Foundation for Basic Research (Project no. 99-03-32010) and the Scientific Schools Program (Project no. 00-15-97356).

PY - 2001

Y1 - 2001

N2 - The Fe2+/Fe3+ ratio in two-dimensional iron oxide nanosructures (nanolayers with a thickness of 0.3-1.5 nm on silica surface) may be precisely controlled using the transport reduction (TR) technique. The species ≡Si-O-Fe(OH)2 and (≡Si-O-)2-FeOH forming the surface monolayer are not reduced at 400-600°C because of their covalent bonding to the silica surface, as demonstrated by Mössbauer spectroscopy. Iron oxide microparticles (microstructures) obtained by the impregnation technique, being chemically unbound to silica, are subjected to reduction at T ≥ 500°C with formation of metallic iron in the form of α-Fe. Transport reduction of supported nanostructures (consisting of 1 or 4 monolayers) at T ≥ 600°C produces bulk iron(II) silicate and metallic iron phases. The structural-chemical transformations occurring in transport reduction of supported iron oxide nanolayers are proved to be governed by specific phase processes in the nanostructures themselves.

AB - The Fe2+/Fe3+ ratio in two-dimensional iron oxide nanosructures (nanolayers with a thickness of 0.3-1.5 nm on silica surface) may be precisely controlled using the transport reduction (TR) technique. The species ≡Si-O-Fe(OH)2 and (≡Si-O-)2-FeOH forming the surface monolayer are not reduced at 400-600°C because of their covalent bonding to the silica surface, as demonstrated by Mössbauer spectroscopy. Iron oxide microparticles (microstructures) obtained by the impregnation technique, being chemically unbound to silica, are subjected to reduction at T ≥ 500°C with formation of metallic iron in the form of α-Fe. Transport reduction of supported nanostructures (consisting of 1 or 4 monolayers) at T ≥ 600°C produces bulk iron(II) silicate and metallic iron phases. The structural-chemical transformations occurring in transport reduction of supported iron oxide nanolayers are proved to be governed by specific phase processes in the nanostructures themselves.

KW - Iron(III) oxide

KW - Nanolayers

KW - Nanostructure

KW - Transport reduction

UR - http://www.scopus.com/inward/record.url?scp=0035606549&partnerID=8YFLogxK

U2 - 10.1023/A:1011432925809

DO - 10.1023/A:1011432925809

M3 - Article

AN - SCOPUS:0035606549

VL - 3

SP - 83

EP - 89

JO - Journal of Nanoparticle Research

JF - Journal of Nanoparticle Research

SN - 1388-0764

IS - 1

ER -

ID: 88005198