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۱Photocatalytic decomposition of chlorophenols by functionalized MCM–41
نویسنده(ها): ، ،
اطلاعات انتشار: همایش بین المللی ژئولیت ایران، سال
تعداد صفحات: ۷
Photocatalytic decomposition of chlorophenols in aqueous solutions requires considerable attention
because these compounds are hazardous toxic pollutants in the aquatic environment. Metallophthalocyanines
have been successfully anchored onto the surface of mesoporous and amorphous silica materials and have
been used as catalyst in the liquid–phase oxidation of aromatic compounds. Anchorage of anion sulfo–cobalt
phthalocyanine to the walls of MCM–41 was preformed by the aid of 3–aminopropyl triethoxy silane
(APTES). APTES was used as a functionalization material. The product was characterized by XRD, BET,
DRS and FTIR methods. Our experimental data shows that the reaction rate of decomposition in the
presence of the catalyst is by the order: 4–CP> 2, 4, 6–TCP > 2, 4–DCP. At the optimized reaction conditions
nearly all of the 4–CP, 2, 4–DCP, and 2, 4, 6–TCP decomposed within 90,180 and 120 min, respectively.<\div>

۲Heterogeneous photocatalytic oxidation of chlorophenol: An environmentally friendly wastewater treatment
نویسنده(ها): ، ،
اطلاعات انتشار: اولین کنفرانس بین المللی تصفیه فاضلاب و بازیافت آب، فناوری ها و یافته های نو، سال
تعداد صفحات: ۷
In this work we synthesized TiO2–based photocatalyst containing cobalt phthalocyanine tetrasulfonate (CoPcTs) by hydrothermal synthesis method. The resulting photocatalyst was characterized by X–ray powder diffraction, BET, FT–IR and DR–UV–vis spectroscopy. Photocatalyticoxidation of 2,4–dichlorophenol (2,4–DCP) was performed by this catalyst in presence of low amount of H2O2 as an auxiliary oxidant under ambient condition. The UV–vis spectrophotometeric method was used for monitoring the degradation process. This photocatalyst displays an efficient photoactivity for degradation and mineralization of 2,4–DCP. The photocatalytic oxidation process was completed within 150 min using a dose of 0.2g\L of the catalyst.<\div>
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