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Synthesis and layer-by-layer self-assembly of titania nanosheets controllably doped with binary transition metal ions

Published online by Cambridge University Press:  16 May 2011

Xiaoping Dong ,
Jie Fu  and
Fengna Xi
Xiaoping Dong*
Affiliation:
Department of Chemistry, School of Sciences, Zhejiang Sci-Tech University, Xiasha Higher Education Zone, Hangzhou, Zhejiang, China
Jie Fu
Affiliation:
Department of Chemistry, School of Sciences, Zhejiang Sci-Tech University, Xiasha Higher Education Zone, Hangzhou, Zhejiang, China
Fengna Xi
Affiliation:
Department of Chemistry, School of Sciences, Zhejiang Sci-Tech University, Xiasha Higher Education Zone, Hangzhou, Zhejiang, China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Here, we describe the synthesis of novel titania nanosheets controllably doped with binary transition metal ions and their layer-by-layer self-assembly. The tailored Mn and Fe doping in exfoliated Ti0.6Mnx/2Fe(0.8-x)/2O2 (x = 0.0–0.4) nanosheets is achieved by systematically changing the molar ratio of Mn/Fe in K0.8Ti1.2MnxFe0.8-xO4 using a codoping strategy. The protonated layered crystals exhibit a delaminated behavior in the tetrabutylammonium hydroxide solution and are exfoliated into colloidal single sheets, which are characterized by a large lateral size and a thickness in molecular dimension. The resulted nanosheets are able to be layer-by-layer deposited with oppositely charged polymers into a composite organic/inorganic system.

Keywords

LayeredSelf-assemblyOxide
Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 10 , 28 May 2011 , pp. 1285 - 1291
Copyright
Copyright © Materials Research Society 2011

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