کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
152142 456488 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Visible light photocatalytic decolourization of C. I. Acid Red 66 by chitosan capped CdS composite nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Visible light photocatalytic decolourization of C. I. Acid Red 66 by chitosan capped CdS composite nanoparticles
چکیده انگلیسی

Chitosan capped CdS (CS/CdS) composite nanoparticles were prepared by biomimetic synthesis method under mild condition. The CS/CdS composite catalyst was characterized by XRD, SEM, TEM and TGA, which indicated the successful formation of nanosized hexagonal phase of CdS on chitosan. Visible light photocatalytic decolourization of C. I. Acid Red 66 (AR 66) was carried out by employing this innovative composite catalyst. The effects of catalyst amount, initial dye concentration and initial pH of solution on decolourization were investigated. The kinetics of photocatalytic decolourization was found to follow a pseudo-first-order according to Langmiur–Hinshelwood (L–H) model. UV–vis spectra were analyzed to prove that AR 66 dye can be decolourized effectively by chitosan capped CdS composite nanoparticles under visible light irradiation. In addition, the recycle and reuse of the catalyst were examined, and the results showed that dye decolourization efficiency was still about 80.1% after 60 min of reaction time when the catalyst was used for 5 times.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 152, Issues 2–3, 15 October 2009, Pages 537–542
نویسندگان
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