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Preparation of nano-sized mixed crystal TiO2-coated Er3+:YAlO3 by sol-gel method for photocatalytic degradation of organic dyes under visible light irradiation.
- Source :
- Water Science & Technology; 2009, Vol. 60 Issue 4, p917-926, 10p, 1 Color Photograph, 1 Diagram, 11 Graphs
- Publication Year :
- 2009
-
Abstract
- In this work, an upconversion luminescence agent, crystallized Er<superscript>3+</superscript>:YAlO<subscript>3</subscript>, was synthesized and then coated by the nano-sized TiO2 film through sol-gel technique. A novel TiO<subscript>2</subscript> photocatalyst, Er<superscript>3+</superscript>:YAlO<subscript>3</subscript>/TiO<subscript>2</subscript>, with high activity in visible light was subsequently prepared. The Er<superscript>3</superscript>+:YAlO<subscript>3</subscript> and Er<superscript>3</superscript>+:YAlO<subscript>3</subscript>/TiO<subscript>2</subscript> were characterized by X-ray diffraction (XRD) and transmission electron microscope (TEM). The photocatalytic activity of Er<superscript>3+</superscript>:YAlO<subscript>3</subscript>/TiO<subscript>2</subscript> photocatalyst was tested by the degradation of acid red B in aqueous solution as the primary model compound under visible light irradiation. The experimental results proved that the prepared TiO<subscript>2</subscript>-coated crystallized Er<superscript>3+</superscript>:YAlO<subscript>3</subscript> was able to decompose the acid red B efficiently, and it is promising to use the idea to develop new TiO<subscript>2</subscript> photocatalyst with high activity for photocatalytic degradation under visible light. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02731223
- Volume :
- 60
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Water Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 44028665
- Full Text :
- https://doi.org/10.2166/wst.2009.425