Issue 31, 2011

Polyoxometalates and colloidal nanocrystals as building blocks for metal oxide nanocomposite films

Abstract

We report the preparation of solution-derived metal oxide nanocomposite films by combining polyoxometalates (POMs) and colloidal oxide nanocrystals. Polyniobates and vanadates were combined with Sn-doped In2O3 (ITO) nanocrystals leading to Nb2O5–ITO, V2O5–ITO and VO2–ITO nanocomposite films. Compared to other solution-phase methodologies, this approach offers excellent control of the nanoinclusion composition, size, morphology, and volume fraction. Two different methodologies have been used, which are based on the ex situ (in solution) and in situ (within the film) ligand exchange of the pristine organic capping ligands of the nanocrystals by POMs. A thorough structural and compositional characterization of the films at different stages of the ligand exchange process is also presented.

Graphical abstract: Polyoxometalates and colloidal nanocrystals as building blocks for metal oxide nanocomposite films

Supplementary files

Article information

Article type
Paper
Submitted
02 Feb 2011
Accepted
04 May 2011
First published
10 Jun 2011

J. Mater. Chem., 2011,21, 11631-11638

Polyoxometalates and colloidal nanocrystals as building blocks for metal oxide nanocomposite films

A. Llordes, A. T. Hammack, R. Buonsanti, R. Tangirala, S. Aloni, B. A. Helms and D. J. Milliron, J. Mater. Chem., 2011, 21, 11631 DOI: 10.1039/C1JM10514K

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