کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
178116 459019 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photocatalytic discolorization of methyl orange solution by Pt modified TiO2 loaded on natural zeolite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Photocatalytic discolorization of methyl orange solution by Pt modified TiO2 loaded on natural zeolite
چکیده انگلیسی

Pt modified TiO2 loaded on natural zeolites (Pt–TiO2/zeolites) was prepared by sol–gel technique and photoreductive deposition method. The photocatalysts were characterized by UV–vis absorption spectrum, FTIR spectrum, BET and X-ray diffraction. Their photocatalytic activities were examined by the photocatalytic decolorization of methyl orange solution under UV light irradiation. The results show that Pt doping induced the enhancement of photocatalytic decolorization and optimal Pt doping is about 1.5 wt.% with 86.2% of decolorization rate under 30 min irradiation time. The effects of calcinated temperature, catalyst concentration, oxidant H2O2, and pH on the photocatalytic activities were studied. The repeatability of photocatalytic activity was also tested and the decolorization rate was 81.9% of initial decolorization rate after five cycles.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dyes and Pigments - Volume 77, Issue 2, 2008, Pages 327–334
نویسندگان
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