Comparison of photocatalytic activities of two kinds of lead magnesium niobate for decomposition of organic compounds under visible-light irradiation

被引：11

作者：

Kako, Tetsuya ^{[1
]}

Ye, Jinhua ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Photocatalyt Mat Ctr, Tsukuba, Ibaraki 3050047, Japan

来源：

JOURNAL OF MATERIALS RESEARCH | 2007年 / 22卷 / 09期

关键词：

D O I：

10.1557/JMR.2007.0333

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two new oxide photocatalysts in the Pb-Mg-Nb ternary system, Pb3MgNb2O9 (PMN) and Pb-1.83 mg(0.29)Nb(1.71)O(6.39), have been synthesized, and their photophysical and photocatalytic properties were investigated for the first time. The band gaps of PMN and Pb1.83Mg0.29Nb1.71O6.39 were estimated to be 3.2 and 2.8 eV, respectively, from their absorption spectra. The photocatalytic activity evaluated from the decomposition of 2-propanol into acetone under visible-light irradiation indicated that Pb1.83Mg0.29Nb1.71O6.39, exhibited at least 20 times higher activity than PMN and has a strong oxidizing potential to mineralize organic compounds.

引用

页码：2590 / 2597

页数：8

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