Effect of Low Frequency and Power Ultrasonic Treatment on the Surface Adsorbed Organics and Visible Light Photocatalysis Activity of Nanosized TiO2 Photocatalyst

Zhang Lian Hong; Fu Rong Zhao; Pei Song Tang; Min Quan Wang

doi:10.4028/www.scientific.net/KEM.336-338.2012

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 336-338Effect of Low Frequency and Power Ultrasonic...

Effect of Low Frequency and Power Ultrasonic Treatment on the Surface Adsorbed Organics and Visible Light Photocatalysis Activity of Nanosized TiO₂ Photocatalyst

Abstract:

The effect of ultrasonic treatment under low frequency and power condition on the surface adsorption state and photocatalysis activity of nanosized TiO2 photocatalyst was studied. Results obtained from UV-Vis absorption spectra revealed that obvious differences of adsorption state on TiO2 powder surface were found after ultrasonic treatment, which agreed with the DTA-TG results that the thermal peaks varied with increasing ultrasonic treatment time. Furthermore, the photocatalysis activity for methyl-orange solution under visible light irradiation (≥450 nm) varied in a similar way with increasing ultrasonic treatment time. Present study revealed that the ultrasonic treatment was an effective way to study the relation between the surface adsorption state and photocatalysis activity of present nanosize TiO2 photocatalyst.

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Key Engineering Materials (Volumes 336-338)

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2012-2014

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https://doi.org/10.4028/www.scientific.net/KEM.336-338.2012

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April 2007

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Zhang Lian Hong, Fu Rong Zhao, Pei Song Tang, Min Quan Wang

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Organics, Photocatalytic, Titania (TiO₂), Ultrasonic Treatment, Visible Light

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