Monodisperse MxFe3-xO4 (M = Fe, Cu, Co, Mn) Nanoparticles and Their Electrocatalysis for Oxygen Reduction Reaction

被引：430
作者：
Zhu, Huiyuan
Zhang, Sen
Huang, Yu-Xi
Wu, Liheng
Sun, Shouheng
机构：
[1] Brown Univ, Dept Chem, Providence, RI 02912 USA
[2] Univ Sci & Technol China, Dept Chem, Hefei 230026, Peoples R China
来源：
NANO LETTERS | 2013年 / 13卷 / 06期
关键词：
Ferrite nanoparticles; solution phase synthesis; electrocatalysis; oxygen reduction reaction; SHAPE-CONTROLLED SYNTHESIS; MAGNETIC NANOPARTICLES; SPINEL OXIDES; COBALT OXIDE; GRAPHENE; NANOCRYSTALS; PERFORMANCE; CATALYSTS; HYBRID; CO3O4;
D O I：
10.1021/nl401325u
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Sub-10 nm nanoparticles (NPs) of MOO-substituted magnetite MxFe3-xO4 (MxFe1-xO center dot Fe2O3) (M = Mn, Fe, Co, Cu) were synthesized and studied as electrocatalysts for oxygen reduction reaction (ORR) in 0.1 M KOH solution. Loaded on commercial carbon support, these MxFe3-xO4 NPs showed the M(II)-dependent ORR catalytic activities with MxFe3-xO4 being the most active followed by CoxFe3-xO4, CuxFe3-xO4, and Fe3O4. The ORR activity of the MxFe3-xO4 was further tuned by controlling x and MnFe2O4 NPs were found to be as efficient as the commercial Pt in catalyzing ORR The MnFe2O4 NPs represent a new class of highly efficient non-Pt catalyst for ORR in alkaline media.
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收藏
页码：2947 / 2951
页数：5
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