Au/TiO2 Reusable Photocatalysts for Dye Degradation

被引：60
|
作者：
Padikkaparambil, Silija [1 ]
Narayanan, Binitha [2 ]
Yaakob, Zahira [1 ]
Viswanathan, Suraja [1 ]
Tasirin, Siti Masrinda [1 ]
机构：
[1] Univ Kebangsaan Malaysia, Fac Engn & Built Environm, Dept Chem & Proc Engn, Bangi 43600, Selangore, Malaysia
[2] Sree Neelakanta Govt Sanskrit Coll, Dept Chem, Pattambi 679306, Kerala, India
来源：
INTERNATIONAL JOURNAL OF PHOTOENERGY | 2013年 / 2013卷
关键词：
DOPED MESOPOROUS TITANIA; TIO2; NANOPARTICLES; ELECTRON DYNAMICS; TOTAL OXIDATION; THIN-FILMS; SILVER; GOLD; DIOXIDE; FABRICATION; CATALYSTS;
D O I：
10.1155/2013/752605
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Nanogold doped TiO2 catalysts are synthesized, and their application in the photodegradation of dye pollutants is studied. The materials are characterized using different analytical techniques such as X-ray diffraction, transmission electron microscopy, UV-visible diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy. The results revealed the strong interaction between the metallic gold nanoparticles and the anatase TiO2 support. Au doped systems showed very good photoactivity in the degradation of dye pollutants under UV irradiation as well as in sunlight. A simple mechanism is proposed for explaining the excellent photoactivity of the systems. The reusability studies of the photocatalysts exhibited more than 98% degradation of the dye even after 10 repeated cycles.
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页数：10
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