Journal
PHOTOCHEMISTRY AND PHOTOBIOLOGY
Volume 92, Issue 4, Pages 515-522Publisher
WILEY
DOI: 10.1111/php.12591
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Funding
- National Natural Science Foundation of China [41573106]
- Scientific Research Foundation for the new employees of SWU [SWU114110]
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TiO2/PVA composite nanofiber mat was prepared via an electrospinning technology. SH-TiO2-SiO2 hybrid particles and PVA solution were injected through a coaxial syringe, yielding a composite nanofiber mat. The as-prepared SH-TiO2-SiO2/PVA composite nanofiber mat was immersed in Cd2+ cation solution and S2- anion solution in turn. Thus, yellow TiO2@CdS/PVA composite nanofiber mats were prepared. By adjusting the number of times a mat was immersed in the Cd2+ and S2- solutions, different amounts of CdS particles attaching to the mats were obtained. Both SH-TiO2-SiO2/PVA and TiO2@CdS/PVA composite nanofiber mats were employed to catalyze the photodegradation of a model dye, methylene blue. The photodegradation performance could be greatly enhanced by the introduction of CdS particles anchoring onto TiO2 particles. The photodegradation efficiency reached 99.2% within 180 min. Also, the nanofiber mat could be recycled and reused at least 10 times. The photodegradation efficiency of TiO2@CdS/PVA composite nanofiber mats remained 68.8% for 10 cycles.
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