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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 and Technology. 60:917-926
- Publication Year :
- 2009
- Publisher :
- IWA Publishing, 2009.
-
Abstract
- In this work, an upconversion luminescence agent, crystallized Er(3 + ):YAlO(3), was synthesized and then coated by the nano-sized TiO(2) film through sol-gel technique. A novel TiO(2) photocatalyst, Er(3 + ):YAlO(3)/TiO(2), with high activity in visible light was subsequently prepared. The Er(3 + ):YAlO(3) and Er(3 + ):YAlO(3)/TiO(2) were characterized by X-ray diffraction (XRD) and transmission electron microscope (TEM). The photocatalytic activity of Er(3 + ):YAlO(3)/TiO(2) 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(2)-coated crystallized Er(3 + ):YAlO(3) was able to decompose the acid red B efficiently, and it is promising to use the idea to develop new TiO(2) photocatalyst with high activity for photocatalytic degradation under visible light.
- Subjects :
- Hot Temperature
Time Factors
Environmental Engineering
Materials science
Light
Catalysis
Phase Transition
Optics
Naphthalenesulfonates
X-Ray Diffraction
Aluminum Oxide
Irradiation
Organic Chemicals
Particle Size
Coloring Agents
Water Science and Technology
Sol-gel
Titanium
Aqueous solution
business.industry
Hydrogen-Ion Concentration
Nanostructures
Kinetics
Transmission electron microscopy
X-ray crystallography
Photocatalysis
Spectrophotometry, Ultraviolet
Powders
Crystallization
Luminescence
business
Azo Compounds
Nuclear chemistry
Visible spectrum
Subjects
Details
- ISSN :
- 19969732 and 02731223
- Volume :
- 60
- Database :
- OpenAIRE
- Journal :
- Water Science and Technology
- Accession number :
- edsair.doi.dedup.....8657c69a04b70d462c57fc65ff942228