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The Surface Structure of Manganese Cation and MnTMPyP Intercalated Potassium Niobate

Published online by Cambridge University Press:  15 February 2011

D. H. Lee ,
Y. Kim ,
O. Sato ,
A. Fujishima  and
K. Hashimoto
D. H. Lee
Affiliation:
Kanagawa Academy of Science and Technology, 1583 Iiyama, Atsugi, Kanagawa243-0297, Japan, dhlee ot-kougei.ac.jp
Y. Kim
Affiliation:
Department of Applied Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
O. Sato
Affiliation:
Kanagawa Academy of Science and Technology, 1583 Iiyama, Atsugi, Kanagawa243-0297, Japan, dhlee ot-kougei.ac.jp
A. Fujishima
Affiliation:
Department of Applied Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
K. Hashimoto
Affiliation:
Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan
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Abstract

K4Nb6O173H2O has a cation exchange ability in K+ ion existing in the interlayer and a property of photocatalyst host. As a preliminary step in the preparation of this catalyst, the cation exchange plays an important role. In this study, we prepared potassium niobate intercalated with Wn2+ and Mn(III)TMPyP7+ (Mn(III)5,10,15,20-tetra(4-pyridyl)-porphyrin) ions and observed the evidence of cation exchange in the interlayer by means of atomic force microscopy. AFM images showed that the Mn2+ ion and MnTMPy7+ cations regularly occupied the potassium sites. This indicates that the metallic oxide reduction center was formed in the interlayer by the cation exchanged species prior to redox treatment and not on the surface of the potassium niobate.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 549: Symposium FF – Advanced Catalytic Materials - 1998 , 1998 , 137
Copyright
Copyright © Materials Research Society 1999

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