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Citation: FAN Cai-Mei, SUN Yan-Ping. Adsorption and Photocatalytic Degradation of Humic Acid Catalyzed by Nano-TiO₂[J]. Chinese Journal of Applied Chemistry, ;2001, 18(11): 912-914. shu

Adsorption and Photocatalytic Degradation of Humic Acid Catalyzed by Nano-TiO₂

1.
College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024

Received Date: 20 January 2001
Available Online: 23 April 2001
Fund Project: 国家自然科学基金资助项目(29776032) (29776032)山西省自然科学基金资助项目(20001013) (20001013)

The adsorption behavior and photocatalytic degradation of humic acid(HA) on nano-TiO₂ particles in water have been studied under UV illumination as functions of pH and the concentration of TiO₂. The results showed that the adsorption of HA on TiO₂ particles was pH-dependent and pzc(point of zero charge of TiO₂)-dependent due to electrostatic interaction. The adsorption behavior of HA on TiO₂ particles played a very important role in the photocatalytic process. Increasing TiO₂ concentration in a neutral medium enhanced the photodegradation.
- nano-TiO₂,
- humic acid,
- adsorption,
- photocatalytic degradation
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Adsorption and Photocatalytic Degradation of Humic Acid Catalyzed by Nano-TiO2

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Adsorption and Photocatalytic Degradation of Humic Acid Catalyzed by Nano-TiO₂