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نویسندگان مقالات پربازدید :
مجله مهندسی شیمی
جزئیات رویداد
اینستاگرام تی پی بین
همایش ، رویداد ، ژورنال
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  • photocatalytic degradation of chlorophenols using star block copolymers: removal efficiency, by-products and toxicity of catalyst

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    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 588
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    • شماره تماس دبیرخانه رویداد: -
     this study investigated the photocatalytic degradation of chlorophenols using two different types of porphyrin core star block copolymers (p-psd and p-pd) with irradiation using visible light. both p-psd and p-pd catalysts show similar tendencies in the degradation of chlorophenols. pentachlorophenol degraded faster than other chlorinated phenols (pentachlorophenol > 2,4,6-trichlorophenol > 2,4-dichlorophenol). the removal rate of chlorophenols using p-psd was higher than the removal rate using p-pd, a difference which could be attributed to the hydrophobicity of p-psd. the degradation intermediates and by-products of the chlorophenols were also identified. the analysis results revealed that the degradation of highly-chlorinated phenols was more rapid than the degradation of the less-chlorinated phenols, as confirmed by residual chlorinated compound and chloride ions that were released. the newly synthesized p-psd catalyst is non-toxic to bacteria. for these reasons, the process of photocatalytic degradation using porphyrin core star block copolymers has potential advantages for the degradation of dissolved chlorophenol pollutants in water.

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