Photocatalytic decomposition of acetaldehyde over rubidium bismuth niobates under visible light irradiation

被引：18

作者：

Kako, T

Ye, JH ^{[1
]}

机构：

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

[2] Japan Sci & Technol Agcy, PREST, Kawaguchi 3320012, Japan

来源：

MATERIALS TRANSACTIONS | 2005年 / 46卷 / 12期

关键词：

air purification; acetaldehyde; volatile organic compounds; visible light; photocatalysis; rubidium bismuth niobate and palladium;

D O I：

10.2320/matertrans.46.2694

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two types of rubidium bismuth niobate, RbBi2Nb5O16 and RbBiNb2O7, were prepared by a conventional solid state reaction method and characterized by X-ray diffraction analysis, UV-vis spectroscopy and SEM. These oxides can absorb up to approximately 420-440 nm wavelength of visible light. The photocatalytic activity of the two niobates in decomposing gaseous acetaldehyde, an indoor pollutant, was evaluated under visible light irradiation. The results indicated that RbBi2Nb5O16 showed a higher photocatalytic activity than RbBiNb2O7, in accordance with their different absorption properties. Moreover, RbBi2Nb5O16 deposited with 1 mass%-Pd on the surface exhibited approximately three times better photocatalytic activity than the bare material.

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页码：2694 / 2698

页数：5

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