Energy structure and photocatalytic activity of niobates and tantalates containing Sn(II) with a 5s2 electron configuration

被引：105

作者：

Hosogi, Y

Tanabe, K

Kato, H

Kobayashi, H

Kudo, A

机构：

[1] Sci Univ Tokyo, Fac Sci, Dept Appl Chem, Shinjyuku Ku, Tokyo 1628601, Japan

[2] Kurashiki Univ Sci & Arts, Coll Sci & Ind Technol, Dept Chem Technol, Kurashiki, Okayama 7128505, Japan

[3] JST, CREST, Kawaguchi, Saitama 3320012, Japan

来源：

CHEMISTRY LETTERS | 2004年 / 33卷 / 01期

关键词：

D O I：

10.1246/cl.2004.28

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

SnNb2O6 (BG = 2.3 eV) containing Sn2+ with a 5s(2) electron configuration showed the photocatalytic activity for H-2 evolution from an aqueous methanol solution under visible light irradiation (lambda > 420 nm) in the presence of a Pt cocatalyst. The energy structure calculation by the plane wave based density functional method revealed that the conduction and valence bands consisted of Nb4d and Sn5s orbitals, respectively. The valence band level consisting of the Sn5s orbitals was more negative than that consisting of O2p orbitals resulting in SnNb2O6 being responsive to visible light.

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页码：28 / 29

页数：2

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