Preparation of Composite and Its Photocatalytic Degradation of Methyl Orange
Publication: Journal of Environmental Engineering
Volume 137, Issue 7
Abstract
A composite (Ti-HAP) was prepared by a hydrothermal method with hydroxyapatite and titanium sulfate and tested for photocatalytic degradation of methyl orange with an 8 W ultraviolet (UV) lamp irradiation. The properties of Ti-HAP were characterized by X-ray diffraction, scanning electron microscope, and Fourier transform infrared spectroscopy (FT-IR) analysis. The effect of the mole ratio on the photocatalytic degradation efficiency of methyl orange by Ti-HAP and the photocatalytic degradation dynamics were investigated. The results show that the addition of Ti slightly changes the structure of HAP. A higher mole ratio results in the generation of anatase in Ti-HAP and higher removal efficiency of methyl orange by Ti-HAP under UV irradiation. The removal efficiency decreases with the initial content of methyl orange increasing from . The photocatalytic degradation process of methyl orange by Ti-HAP and HAP follow the Langmuir-Hinshelwood kinetics model.
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Published In
Journal of Environmental Engineering
Volume 137 • Issue 7 • July 2011
Pages: 611 - 616
Copyright
© 2011 American Society of Civil Engineers.
History
Received: May 9, 2010
Accepted: Jan 5, 2011
Published online: Jan 7, 2011
Published in print: Jul 1, 2011
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