کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
49692 46760 2016 5 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
“Cat in a bag” recycling of dendrimer encapsulated Au nanoparticles by use of dialysis membrane bag in the reduction of 4-nitrophenol: proof of heterogeneous catalysis
ترجمه فارسی عنوان
"گربه در یک کیسه" بازیافت نانوذرات Au encended دندریمر با استفاده از کیسه غشایی دیالیز در کاهش 4-نیتروفنول: اثبات کاتالیز ناهمگن
کلمات کلیدی
دندریمر؛ طلا؛ تجزیه ناهمگن؛ کاهش نیتروفنول
Dendrimer; Gold; Heterogeneous catalysis; Nitrophenol reduction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• Dendrimer encapsulated gold nanoparticles were synthesized.
• The nanoparticles were immobilized in a membrane bag.
• Nitrophenol reduction was evaluated.
• No gold leaching was observed.
• Nitrophenol reduction appeared to be a purely heterogeneous reaction

Generation 4 PAMAM-NH2 dendrimers were used as template to synthesize Au13- and Au100-dendrimer-encapsulated nanoparticles (Au-DENs) with an average diameter of 2.1 ± 0.3 and 3.1 ± 0.5 nm respectively. Au-DENs were characterized using various techniques. Catalytic recycling of Au-DENs using a dialysis membrane bag in the reduction of 4-NP is presented. The reduction process was primarily monitored by UV–vis spectroscopy at around λ 400 nm. The catalyst was found to exhibit a very good activity and stability even after more than 3 catalytic reaction cycles without any leaching, confirming that the reduction of 4-NP is purely a heterogeneous reaction.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 83, 5 August 2016, Pages 53–57
نویسندگان
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