| Summary: | 碩士 === 國立勤益科技大學 === 化工與材料工程系 === 106 === This topic is the use of self-organized continuous photocatalytic reaction system for the simulation of photodegradation harmful substances in the air. First of all, for this system, the stability test of the reactor tightness, catalyst adsorption, and homogeneous light reaction was performed to confirm that the subsequent experimental error can be minimized. The mesoporous titania was prepared by sol-gel method and the triblock copolymer P123 was used to change the solution composition. It was hoped that the structure and performance of the P25 (titanium oxide) were more suitable for MTBE (methyl tertiary butyl) Degradation of ether). The experimental results show that the self-made photocatalyst (A-H-P) has a porous spherical structure. This structure has the characteristics of small volume and large specific surface area, and the specific surface area of A-H-P and P25 is 80.43 m2/g and 54.38 m2/g, respectively. And by XRD it is known that the A-H-P crystal structure is mostly an anatase phase with more photocatalytic activity. Under the conditions of the initial concentration of 45ppm MTBE and the photocatalyst powder usage of 0.10g, the degradation efficiency of MTBE by A-H-P was 46.11% and that of commercially available P25 was 33.74%. Subsequently, the TiO2-PAN composite nanofiber film was prepared by electrospinning using A-H-P combined with PAN (polyacrylonitrile), and the difference in the photodegradation efficiency of the TiO2-PAN composite nanofibers with the powder-type A-H-P was evaluated.
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