Issue 3, 2012

Preparation and formation mechanism of a n-butylammonium/MnO2 layered hybrid via a one-pot synthesis under moderate conditions

Abstract

The preparation of organic/inorganic layered hybrids has relied on multistep processing. Thus, shortening the synthetic procedure is important for possible future applications, but only a few studies report one-pot syntheses. In this work, we established a simple one-pot solution process to synthesize layered alkyl ammonium/MnO2 hybrids, by stirring MnCl2 and alkyl amine/H2O2 aqueous solutions at 40 °C; the reaction concept is a chemical oxidation of Mn(II) ions in the presence of alkyl amine in aqueous solution. Furthermore, the formation mechanism of the layered n-butylammonium/MnO2 hybrid was examined by following the structural and optical changes during the reaction, revealing that the one-pot reaction includes 3 steps; formation of β-MnOOH, topotactic oxidation of β-Mn(III)OOH to form the protonated layered manganese oxide HxMn(III, IV)O2·yH2O, and ion-exchange of interlayer H+ (or H3O+) with n-butylammonium to form layered n-butylammonium/MnO2.

Graphical abstract: Preparation and formation mechanism of a n-butylammonium/MnO2 layered hybrid via a one-pot synthesis under moderate conditions

Supplementary files

Article information

Article type
Paper
Submitted
18 Jun 2011
Accepted
15 Sep 2011
First published
11 Nov 2011

Dalton Trans., 2012,41, 825-830

Preparation and formation mechanism of a n-butylammonium/MnO2 layered hybrid via a one-pot synthesis under moderate conditions

K. Kai, Y. Yoshida, Y. Kobayashi, H. Kageyama and G. Saito, Dalton Trans., 2012, 41, 825 DOI: 10.1039/C1DT11145K

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