کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
221619 464260 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and characterization of ultrafined palladium nanoparticles decorated on 2D magnetic graphene oxide nanosheets and their application for catalytic reduction of 4-nitrophenol
ترجمه فارسی عنوان
سنتز و خصوصیات نانوذرات پالادیوم اولترافین تزئین شده بر روی نانوصفحات اکسید گرافن مغناطیسی دوبعدی و کاربرد آنها برای کاهش کاتالیزوری 4 نیتروفنول
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Pd NPs/Fe3O4/PEI/RGO was synthesized by dispersion of Pd NPs and Fe3O4 NPs on GO sheets.
• Pd NPs were ultrafined and well-dispersed on the RGOnanosheets.
• Pd NPs/Fe3O4/PEI/RGO has the advantages of rapid separation.
• Pd NPs/Fe3O4/PEI/RGO exhibited high catalytic activity toward the reduction of 4-NP.

In this study, Pd NPs/Fe3O4/PEI/RGO nanohybrids were synthesized by dispersion of ultrafined Pd nanoparticles and the subsequent assembly of coupled Fe3O4 nanoparticles on polyethyleneimine-functionalized graphene oxide sheets. Transmission electron microscopic images showed that Pd nanoparticles were ultrafined and well-dispersed on the reduced graphene oxide nanosheets, and the mean particle size of Pd is around 2.2 nm. The nanohybrids were found to exhibit high catalytic activity toward the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) in aqueous solution, which is attributed to the effects of ultrafined Pd nanoparticles decorated on the reduced graphene oxide nanosheets. More importantly, the Pd NPs/Fe3O4/PEI/RGO catalyst could be conveniently separated from the reaction mixture by a magnet, and the catalyst was recycled over ten times without a significant loss in its activity. Therefore, the promising nanocatalyst might have wide applications in catalysis, environment, biotechnology and new energy fields in the future.

Pd NPs/Fe3O4/PEI/RGO nanohybrids as the catalysts for the highly efficient degradation of 4-NP.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 4, Issue 3, September 2016, Pages 3433–3440
نویسندگان
, , , , , ,