Issue 16, 2009

Structural and morphological control of manganese oxide nanoparticles upon soft aqueous precipitation through MnO4/Mn2+ reaction

Abstract

A low-temperature (60 or 95 °C) “one-pot” procedure for the aqueous precipitation of manganese oxide nanoparticles is developed through the MnO4/Mn2+ reaction. Characterization of the particles is carried out using elemental analysis, mean oxidation state determination, powder XRD, FESEM, TEM and electron diffraction. Many synthesis parameters are investigated, such as acidity, reactant ratio, concentration and nature of the counter-cation, temperature and aging time. Speciation diagrams are drawn for the synthesis of five different pure phases (spinel-type Mn3O4, layered birnessite-type δ-MnO2, tunnel-based frameworks cryptomelane-type α-MnO2, γ-MnO2 and pyrolusite β-MnO2). The influence of synthetic parameters is rationalized and reaction pathways toward various structures and morphologies are discussed.

Graphical abstract: Structural and morphological control of manganese oxide nanoparticles upon soft aqueous precipitation through MnO4−/Mn2+ reaction

Supplementary files

Article information

Article type
Paper
Submitted
17 Sep 2008
Accepted
19 Jan 2009
First published
27 Feb 2009

J. Mater. Chem., 2009,19, 2407-2416

Structural and morphological control of manganese oxide nanoparticles upon soft aqueous precipitation through MnO4/Mn2+ reaction

D. Portehault, S. Cassaignon, E. Baudrin and J. Jolivet, J. Mater. Chem., 2009, 19, 2407 DOI: 10.1039/B816348K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements