کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5145733 | 1497361 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Efficient carbon-supported Ag-MFe2O4 (MÂ =Â Co, Mn) core-shell catalysts for oxygen reduction reactions in alkaline media
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Efficient carbon-supported Ag-MFe2O4 (MÂ =Â Co, Mn) core-shell catalysts for oxygen reduction reactions in alkaline media Efficient carbon-supported Ag-MFe2O4 (MÂ =Â Co, Mn) core-shell catalysts for oxygen reduction reactions in alkaline media](/preview/png/5145733.png)
چکیده انگلیسی
Nanoparticles with core-shell or hollow interiors have immense potential for catalysis. Herein, Ag@MxFe3âxO4 (MÂ =Â Co, Mn) core-shell nanoparticles were firstly synthesized through a seed-mediated method. These particles were then loaded onto carbon catalyst supports to form Ag@MxFe3âxO4/C. Then, hollow-MxFe3âxO4/C was prepared with the diffusion of Ag from Ag@MxFe3âxO4/C in saturated NaCl solution at room temperature. As a result, Ag@MnFe2O4/C demonstrates better oxygen reduction reaction (ORR) activity than Ag@CoFe2O4/C and other Ag@MnxFe3âxO4/C with various Mn/Fe ratios. Moreover, Ag@MFe2O4/C shows superior ORR catalytic activities over hollow-MFe2O4/C, which can be due to electronic coupling between Ag core and MFe2O4 shell. Furthermore, Ag@MnFe2O4/C catalysts demonstrate high durability for the ORR in alkaline media and insensitivity to methanol. These findings will provide helpful guidance for design and fabrication of carbon-supported core-shell catalysts for ORR in the future.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 16, 20 April 2017, Pages 11304-11311
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 16, 20 April 2017, Pages 11304-11311
نویسندگان
Yingjie Chen, Shiben Liu, Liyan Yu, Qiuhong Liu, Yongtao Wang, Lifeng Dong,