青岛科技大学  English 
陈英杰
赞  

教师拼音名称:chenyingjie

电子邮箱:

毕业院校:中国科学院海洋研究所

学科:

材料学

曾获荣誉:

2018-10-09 我最喜爱的老师

2019-09-13 校级优秀班主任

手机版

访问量:

最后更新时间:..

Efficient carbon-supported Ag-MFe2O4 (M = Co, Mn) core-shell catalysts for oxygen reduction reactions in alkaline media

关键字:Seed-mediated method; Ag-MFe2O4; Core-shell; Hollow; Oxygen reduction reaction

摘要:Nanoparticles with core shell or hollow interiors have immense potential for catalysis. Herein, Ag@MxFe3-xO4 (M = 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@MxFe3-xO4/C. Then, hollow-MxFe3-xO4/C was prepared with the diffusion of Ag from Ag@MxFe3-xO4/C in saturated NaCl solution at room temperature. As a result, Ag@MxFe3-xO4/C demonstrates better oxygen reduction reaction (ORR) activity than Ag@Fe2O4/C and other Ag@MxFe3-xO4/C with various Mn/Fe ratios. Moreover, Ag@MxFe3-xO4/C shows superior ORR catalytic activities over hollow-MxFe3-xO4/C, which can be due to electronic coupling between Ag core and MFe2O4 shell. Furthermore, Ag@MxFe3-xO4/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. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd, All rights reserved.

卷号:42

期号:16

是否译文:

崂山校区 - 山东省青岛市松岭路99号   
四方校区 - 山东省青岛市郑州路53号   
中德国际合作区(中德校区) - 山东省青岛市西海岸新区团结路3698号
高密校区 - 山东省高密市杏坛西街1号   
济南校区 - 山东省济南市文化东路80号©2015 青岛科技大学    
管理员邮箱:master@qust.edu.cn