کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7922071 | 1511756 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Extended Stöber method to synthesize core-shell magnetic composite catalyst Fe3O4@C-Pd for Suzuki coupling reactions
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
Fe3O4@C core-shell microspheres have been synthesized by the carbonization of Fe3O4@resorcinol-formaldehyde which was obtained with an extended Stöber method. Without additional reducing agents, Pd nanoparticles were successfully immobilized in the shell of microspheres during the carbonization. The size of Pd nanoparticles could be controlled from 3â¯nm to 10â¯nm through adjusting the carbonization temperature from 350â¯Â°C to 550â¯Â°C. Fe3O4@C-Pd core-shell catalyst carbonized at 550â¯Â°C shows the highest catalytic performance in Suzuki coupling reaction of iodobenzene and phenylboronic acid. The yield of biphenyl could reach 100% in 30â¯min and kept over 90% even after ten-times recycling. The magnetic composite catalysts possess high saturation magnetization (54.90 emu·gâ1) and can be easily recovered by the aid of an external magnetic field.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 207, 1 March 2018, Pages 181-185
Journal: Materials Chemistry and Physics - Volume 207, 1 March 2018, Pages 181-185
نویسندگان
Changgeng Sun, Kai Sun, Shaokun Tang,