Chelation-mediated aqueous synthesis of metal oxyhydroxide and oxide nanostructures: Combination of ligand-controlled oxidation and LigandCooperative morphogenesis

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We have synthesized nanostructures of iron and cobalt oxyhydroxides and manganese oxides in aqueous solution containing a chelating agent. Nanosheets of FeOOH and NaxMnO2 and nanoflakes of CoOOH were generated from the corresponding divalent metal salts and ethylenediam-inetetraacetate (EDTA) by one-pot synthesis under ambient conditions. The chelating agent fulfilled multiple roles in the reaction process and morphogenesis leading to two-dimensional nanostructures. Coordination to the divalent metal ions inhibited rapid precipitation of metal hydroxides and mediated oxidation to tri- and tetravalent species by dissolved oxygen. Along with the deposition, the two-dimensional and single-crystal nanostructures were also associated with interactions of the chelating agent. Therefore, this approach can be regarded as a combination of ligand-controlled oxidation and ligand-cooperative morphogenesis. Parallel control of the reaction and the morphology was achieved by a simple approach. The model cases suggest that tailoring chelation can facilitate the design of other metal oxide nanomaterials.

Original languageEnglish
Pages (from-to)8564-8571
Number of pages8
JournalChemistry - A European Journal
Volume13
Issue number30
DOIs
Publication statusPublished - 2007

Fingerprint

Chelating Agents
Chelation
Oxides
Nanostructures
Metals
Ligands
Oxidation
Hydroxides
Nanosheets
Dissolved oxygen
Nanostructured materials
Metal ions
Manganese oxide
Salts
Single crystals
Cobalt
Iron

Keywords

  • Aqueous synthesis
  • Biomimetic synthesis
  • Chelates
  • Crystal growth
  • Nanostructures

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

@article{1db7a346749d43d2abae84c61a68a4da,
title = "Chelation-mediated aqueous synthesis of metal oxyhydroxide and oxide nanostructures: Combination of ligand-controlled oxidation and LigandCooperative morphogenesis",
abstract = "We have synthesized nanostructures of iron and cobalt oxyhydroxides and manganese oxides in aqueous solution containing a chelating agent. Nanosheets of FeOOH and NaxMnO2 and nanoflakes of CoOOH were generated from the corresponding divalent metal salts and ethylenediam-inetetraacetate (EDTA) by one-pot synthesis under ambient conditions. The chelating agent fulfilled multiple roles in the reaction process and morphogenesis leading to two-dimensional nanostructures. Coordination to the divalent metal ions inhibited rapid precipitation of metal hydroxides and mediated oxidation to tri- and tetravalent species by dissolved oxygen. Along with the deposition, the two-dimensional and single-crystal nanostructures were also associated with interactions of the chelating agent. Therefore, this approach can be regarded as a combination of ligand-controlled oxidation and ligand-cooperative morphogenesis. Parallel control of the reaction and the morphology was achieved by a simple approach. The model cases suggest that tailoring chelation can facilitate the design of other metal oxide nanomaterials.",
keywords = "Aqueous synthesis, Biomimetic synthesis, Chelates, Crystal growth, Nanostructures",
author = "Yuya Oaki and Hiroaki Imai",
year = "2007",
doi = "10.1002/chem.200700492",
language = "English",
volume = "13",
pages = "8564--8571",
journal = "Chemistry - A European Journal",
issn = "0947-6539",
publisher = "Wiley-VCH Verlag",
number = "30",

}

TY - JOUR

T1 - Chelation-mediated aqueous synthesis of metal oxyhydroxide and oxide nanostructures

T2 - Combination of ligand-controlled oxidation and LigandCooperative morphogenesis

AU - Oaki, Yuya

AU - Imai, Hiroaki

PY - 2007

Y1 - 2007

N2 - We have synthesized nanostructures of iron and cobalt oxyhydroxides and manganese oxides in aqueous solution containing a chelating agent. Nanosheets of FeOOH and NaxMnO2 and nanoflakes of CoOOH were generated from the corresponding divalent metal salts and ethylenediam-inetetraacetate (EDTA) by one-pot synthesis under ambient conditions. The chelating agent fulfilled multiple roles in the reaction process and morphogenesis leading to two-dimensional nanostructures. Coordination to the divalent metal ions inhibited rapid precipitation of metal hydroxides and mediated oxidation to tri- and tetravalent species by dissolved oxygen. Along with the deposition, the two-dimensional and single-crystal nanostructures were also associated with interactions of the chelating agent. Therefore, this approach can be regarded as a combination of ligand-controlled oxidation and ligand-cooperative morphogenesis. Parallel control of the reaction and the morphology was achieved by a simple approach. The model cases suggest that tailoring chelation can facilitate the design of other metal oxide nanomaterials.

AB - We have synthesized nanostructures of iron and cobalt oxyhydroxides and manganese oxides in aqueous solution containing a chelating agent. Nanosheets of FeOOH and NaxMnO2 and nanoflakes of CoOOH were generated from the corresponding divalent metal salts and ethylenediam-inetetraacetate (EDTA) by one-pot synthesis under ambient conditions. The chelating agent fulfilled multiple roles in the reaction process and morphogenesis leading to two-dimensional nanostructures. Coordination to the divalent metal ions inhibited rapid precipitation of metal hydroxides and mediated oxidation to tri- and tetravalent species by dissolved oxygen. Along with the deposition, the two-dimensional and single-crystal nanostructures were also associated with interactions of the chelating agent. Therefore, this approach can be regarded as a combination of ligand-controlled oxidation and ligand-cooperative morphogenesis. Parallel control of the reaction and the morphology was achieved by a simple approach. The model cases suggest that tailoring chelation can facilitate the design of other metal oxide nanomaterials.

KW - Aqueous synthesis

KW - Biomimetic synthesis

KW - Chelates

KW - Crystal growth

KW - Nanostructures

UR - http://www.scopus.com/inward/record.url?scp=35349020963&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=35349020963&partnerID=8YFLogxK

U2 - 10.1002/chem.200700492

DO - 10.1002/chem.200700492

M3 - Article

C2 - 17659662

AN - SCOPUS:35349020963

VL - 13

SP - 8564

EP - 8571

JO - Chemistry - A European Journal

JF - Chemistry - A European Journal

SN - 0947-6539

IS - 30

ER -