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نویسندگان مقالات پربازدید :
مجله مهندسی شیمی
جزئیات رویداد
همایش ، رویداد ، ژورنال
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  • free-standing open-ended tio2 nanotube membranes and their promising through-hole applications

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    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
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    • شماره تماس دبیرخانه رویداد: -
     free-standing open-ended tio2 nanotube membranes were fabricated by raising voltage for a short time at the end of anodization process. benefiting from its semiconducting nature and distinctive through-hole structure, the applications of open-ended tio2 nanotube membranes on flow-through photocatalysis and nanoreactor were demonstrated. as for flow-through photocatalysis, the photocatalytic property of tio2 is beneficial to reduce the concentration of rhb solution during rhb molecules diffuse through open-ended tio2 nanotube membrane. as for nanoreactor application, cds@tio2 core–shell nanocables were successfully fabricated by a simple paired-cell reaction. a possible formation mechanism for the growth of core–shell structure was discussed on the basis of a series of electron microscopy characterization results. in addition, we evaluated the photocatalytic activity of cds@tio2 samples synthesized at different reaction time through the degradation of rhodamine b under simulated sunlight irradiation. it was found that the cds@tio2 samples synthesized at 24 h exhibited about 100% enhanced photocatalytic activity as compared to bare tio2 nanotubes, while the cds@tio2 samples synthesized at 48 h (core–shell nanocables) had the equivalent photocatalytic activity to the bare tio2 nanotubes. such behavior that the photocalytic activity changes with cds loading amount results from a compromise between a larger amount of light absorption and a lower efficiency of charge separation, as well as limited diffusion by channel blocking higher degree of cds loading.

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