Kinetic study on photocatalysis degradation of phenol by using tourmaline/TiO_2 system as catalyst

This article used the method of titanium salts on the surface of tourmaline particles hydrolyzing and coating TiO2 to construct mineral with polar electricity and TiO2 system in different conditions.The catalysis system was characterized by scanning electron microscopy and fourier infrared absorption spectra,transmission electron microscopy.This system was getting a titanium dioxide/tourmaline composite functional material which would be used to treat wastewaters containing phenol.The decomposition efficiency could be 96.29% at 120min when the rate of tourmaline to TiO2 was 0.2,which was 26% higher than that of pure phase TiO2.The result of rate constant of phenol concentration changing from-0.0012 to-0.0012 shows that the change of phenol concentration has apparent influence on the catalysis efficiency of catalyst,and the rate constant of phenol amount changing from-0.0105 to-0.0051 shows that phenol decomposition conforms to Langmuir-Hinshelwood kinetics equation.