Nano-ZnO Photocatalytic Kinetics Based on Photo-Layer Model

Hang Xu; Min Yue Li

doi:10.4028/www.scientific.net/AMR.550-553.2819

Paper Titles

Thermodynamic Investigation of Acetic Acid Steam Reforming for Hydrogen Production
p.2801

First-Principles Investigations on Electronic, Elastic and Thermodynamic Properties of VN under High Pressure
p.2805

Interatomic Potential and Thermodynamic Property of Diatomic Uranium
p.2810

Calculation of Thermodynamic and Thermoelastic Properties for Ductile B2-YAg Intermetallics with Molecular Dynamics
p.2814

Nano-ZnO Photocatalytic Kinetics Based on Photo-Layer Model
p.2819

Degradation Pathway and Kinetics of Vanillin with Gordonia sp.
p.2824

Experimental Study on the Mineral Processing of a High-Clay and Lean Hematite
p.2831

Experimental Research on Cyanidation Leaching of a Gold Ore
p.2835

Characteristic Study of Kaolin on Agglomeration Caused by Burning Black Liquor in Fluidized Bed
p.2840

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Nano-ZnO Photocatalytic Kinetics Based on Photo-Layer Model

Abstract:

Nano-ZnO powders were prepared through gel-sol method with zinc acetate and lithium hydroxide as crude material. Nano-ZnO, as photo-catalyst, was used to decompose Methylene Blue at air lift circulating reactor and Photo-Layer model to describe photocatalytic kinetics. The results show that nano-ZnO has a integrate crystal and its size is 6.6nm with the best photocatalytic performance, when calcined at 350oC. The best ZnO dosage is 0.1g/L with 97% Methylene Blue removal after 30min. The photocatalytic process was the control step in chemical reaction. The •OH concentration inside the photo-layer in different reaction condition were calculated according to Photo-Layer model.