Effect of carboxyl group on the visible-light photocatalytic activity of SrTiO3 nanoparticles

被引：6

作者：

Li, Huihui ^{[1
,2
]}

Yin, Shu ^{[1
]}

Wang, Yuhua ^{[2
]}

Kobayashi, Makoto ^{[1
]}

Tezuka, Satoko ^{[1
]}

Kakihana, Masato ^{[1
]}

Sato, Tsugio ^{[1
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Lanzhou Univ, Lanzhou 730000, Peoples R China

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 2013年 / 39卷 / 04期

关键词：

SrTiO3; Carboxyl; Visible light; Organic acid; Photocatalyst; DEGRADATION; IRRADIATION; PARTICLES;

D O I：

10.1007/s11164-012-0894-1

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

SrTiO3 nanoparticles modified with a carboxyl group were successfully prepared by microwave-assisted solvothermal reaction of SrCl2 center dot 6H(2)O and Ti(OC3H7)(4) in methanol-organic acid solution. The as-prepared products were characterized using X-ray diffraction (XRD), diffuse reflectance spectroscopy, and Fourier-transform infrared (FTIR) spectroscopy. The photocatalytic activity was determined by DeNO (x) ability using a mercury arc with filters to control irradiation wavelengths to > 290, > 400, and > 510 nm. Nanoparticles of perovskite-type SrTiO3 were successfully synthesized above pH 12. The photocatalytic activity of SrTiO3 under visible-light (> 510 nm) irradiation could be promoted by surface modification of SrTiO3 with the carboxyl group (-COO), especially from oleic acid.

引用

页码：1615 / 1621

页数：7

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