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نویسندگان مقالات پربازدید :
مجله مهندسی شیمی
جزئیات رویداد
اینستاگرام تی پی بین
همایش ، رویداد ، ژورنال
حوزه های تحت پوشش رویداد

  • hydrothermal preparation of p25–graphene composite with enhanced adsorption and photocatalytic degradation of dyes

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    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 590
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     graphene, a 2-d carbon material, has unique electrical properties and high specific surface area. in recent years, carbon materials were impregnated into tio2photocatalysts and become a research focus since the pure tio2 has limited adsorption and photocatalytic ability. in this study, p25–graphene (gn) nanocomposite photocatalyst was prepared by hydrothermal methods. the reduction of graphene oxide and loading of tio2 (degussa p25) on gn were completed at the hydrothermal process. by controlling the amount of p25 and the concentration of graphene oxide dispersions, p25–graphene composite with different graphene content was prepared. the nanocomposites were characterized using tem, xrd, n2 adsorption/desorption analyzer, uv–vis drs and tga. as graphene content increasing, the absorption intensity of visible light and the specific surface area was increased. the results showed that p25–graphene composite has better adsorption capacity and photocatalytic degradation efficiency for mb (methylene blue) and rbk5 (reactive black 5) dyes removal. for 10 mg l−1 mb, the adsorption removal efficiency can reach above 90% with p25–10% gn dosage of 0.4 g l−1. the saturated adsorption capacity of mb is 50 mg g−1under the same condition. for 10 mg l−1 rbk5, the degradation removal efficiency can reach more than 90% with 365 nm uv light irradiation.

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