کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4414335 | 1307708 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photocatalytic oxidation of organic pollutants on titania–clay composites
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
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چکیده انگلیسی
TiO2/Ca-montmorillonite composites were prepared by wet grinding in an agate mill. Positively charged TiO2 nanoparticles are bound to the surface of the negatively charged montmorillonite layers via heterocoagulation; the clay mineral is used as adsorbent and support for the photooxidation process. Aquatic solution of 0.5 mM phenol was degraded by irradiation with UV–VIS light (λ = 250–440 and 540–590 nm) in suspensions of TiO2–clay composites and significant photodegradation was observed at 40–60% TiO2/Ca-montmorillonite compositions. Synergistic effect was detected at solid/liquid interface for degradation of phenol and at solid/gas interface in the recycling flow reactors for photooxidation of ethanol and toluene vapors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 70, Issue 3, January 2008, Pages 538–542
Journal: Chemosphere - Volume 70, Issue 3, January 2008, Pages 538–542
نویسندگان
Judit Ménesi, László Körösi, Éva Bazsó, Volker Zöllmer, André Richardt, Imre Dékány,