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- W2355404251 abstract "Using tetrabutyl titanate as the precursor and acetic acid as the depressor,TiO2/ CNTs composite catalyst was prepared by sol-gel method. The photo-degradation activity of TiO2/ CNTs composite catalyst for photocatalytic degradation of alizarin red solution with different concentrations was investigated,and its photocatalytic degradation kinetics was also studied. The results showed that the optimal preparation condition of composite catalyst was as follows: CNTs loading mass fraction 7. 5%,calcination temperature 450 ℃and calcination time 3. 5 h,and the photocatalytic activity of Ti O2/ CNTs composite catalyst was improved.Under the same condition,the final degradation rate of alizarin red solution with the concentration of150 mg·L-1over TiO2/ CNTs catalyst reached 67%,while the final degradation rate of alizarin red solution over TiO2 only was 56%. The reason for photocatalytic activity improvement of composite catalyst was that it could generate more active hydroxyl under UV irradiation when TiO2 was loaded on CNTs. The photocatalytic degradation kinetics of the composite catalyst complied Langmuir-Hinshelwood equation.The catalyst surface adsorption to pollutants was the bottleneck of reaction,and the reaction order of kinetics decreased from one order to zero level with the increase of pollutant concentrations." @default.
- W2355404251 created "2016-06-24" @default.
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- W2355404251 date "2014-01-01" @default.
- W2355404251 modified "2023-09-23" @default.
- W2355404251 title "Degradation of alizarin red solution by TiO_2 supported on CNTs" @default.
- W2355404251 hasPublicationYear "2014" @default.
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