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نویسندگان مقالات پربازدید :
مجله مهندسی شیمی
جزئیات رویداد
اینستاگرام تی پی بین
همایش ، رویداد ، ژورنال
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  • nanocomposites of graphene oxide-hydrated zirconium oxide for simultaneous removal of as(iii) and as(v) from water

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    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 698
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     hydrated zirconium oxide (zro(oh)2) nanoparticles were modified with graphite oxide (go) (denoted herein as go–zro(oh)2) by hydro-thermal co-precipitation reaction, and were used for the simultaneous removal of as(iii) and as(v) from drinking water. the go–zro(oh)2 nanocomposites were characterized using fourier transformer infrared spectroscopy, x-ray diffraction analysis, high resolution transmission electron microscopy, zeta-potential, and specific surface area analysis. the size of zro(oh)2particles in go–zro(oh)2 is below 5 nm, and the specific surface area of go–zro(oh)2is about 4 times that of zro(oh)2 nanoparticles. the go–zro(oh)2 nanocomposites showed high adsorption capacity in a wide ph range, and the monolayer adsorption amounts calculated based on the langmuir adsorption model were 95.15 and 84.89 mg/g for as(iii) and as(v), respectively, which are 3.54 and 4.64 times that of zro(oh)2 nanoparticles. the high adsorption capacity is attributed to good dispersion of zro(oh)2 nanoparticles in the go substrate. the go–zro(oh)2 nanocomposites can simultaneously remove as(iii) and as(v) in water. moreover, go–zro(oh)2 showed good anti-interference ability to co-existing anions, and exhibited excellent recyclability. the experimental results suggest that go–zro(oh)2 is a promising adsorbent for the removal of arsenic from drinking water.

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