کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
593202 1453932 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic photocatalysts of copper phthalocyanine-sensitized titania for the photodegradation of dimethyl phthalate under visible light
ترجمه فارسی عنوان
فوتوکاتالیست های مغناطیسی تیتانیوم حساس شده با فتالاتالسیانین مس برای فتوسنتز دی متیل فتالات در نور مرئی
کلمات کلیدی
دی متیل فتالیت، مغناطیسی، فتالوسیانین حساس شده، تیتانیا، عکاسی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
چکیده انگلیسی
In this study, magnetic hybrid photocatalysts (copper phthalocyanine/anatase/silica/magnetite, CuPc/TSM, VTSM) were synthesized, characterized, and applied to degrade the plasticizer dimethyl phthalate (DMP) under xenon-lamp irradiation. The characteristics of the VTSM hybrid materials were characterized using TEM, absorption of radiation, PL spectra, XRD, and SQUID techniques. The influence of the coating dosage of CuPc on the physicochemical characteristics of TSM composites and the photocatalytic activity of DMP was investigated along with the reusability of the VTSM hybrid materials. The best of CuPc coating dosage (1.92 wt% VTSM) was confirmed based on the PL spectra and the photocatalytic activity of DMP. An appropriate coating thickness of CuPc was proven to minimize the inhibition of exciton-exciton annihilation and to promote electron injection into the semiconductor. The degradation efficiencies of DMP by the 1.92 wt% VTSM hybrid photocatalyst for first, sixth and tenth runs were 42.4, 41.7 and 40.6%/g, respectively. The results led to the conclusions that easily controllable VTSM hybrid photocatalysts exhibited good and stable photocatalytic activity toward the degradation of DMP over ten runs and that the use of the magnetic hybrid photocatalysts for the treatment of water contaminants would result in diminished environmental impacts.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 441, 20 January 2014, Pages 255-261
نویسندگان
, ,