Core-shell Au@Pd nanoparticles with enhanced catalytic activity for oxygen reduction reaction via core-shell Au@Ag/Pd constructions.
Core-shell Au@Pd nanoparticles with enhanced catalytic activity for oxygen reduction reaction via core-shell Au@Ag/Pd constructions.
复制标题
核壳Au@Pd纳米粒子通过核壳Au@Ag/Pd结构增强氧还原反应的催化活性
DOI:
10.1038/srep11949
复制
发表时间:
2015-07-06
影响因子:
4.6
通讯作者:
Yang J
中科院分区:
文献类型:
--
作者:
Chen D;Li C;Liu H;Ye F;Yang J
Core-shell nanoparticles often exhibit improved catalytic properties due to the lattice strain created in these core-shell particles. Herein, we demonstrate the synthesis of core-shell Au@Pd nanoparticles from their core-shell Au@Ag/Pd parents. This strategy begins with the preparation of core-shell Au@Ag nanoparticles in an organic solvent. Then, the pure Ag shells are converted into the shells made of Ag/Pd alloy by galvanic replacement reaction between the Ag shells and Pd2+ precursors. Subsequently, the Ag component is removed from the alloy shell using saturated NaCl solution to form core-shell Au@Pd nanoparticles with an Au core and a Pd shell. In comparison with the core-shell Au@Pd nanoparticles upon directly depositing Pd shell on the Au seeds and commercial Pd/C catalysts, the core-shell Au@Pd nanoparticles via their core-shell Au@Ag/Pd templates display superior activity and durability in catalyzing oxygen reduction reaction, mainly due to the larger lattice tensile effect in Pd shell induced by the Au core and Ag removal.
登录
查看更多内容
影响因子:
10.8
作者:
Sun, YG;Xia, YN
通讯作者:
Xia, YN
影响因子:
3.3
作者:
Norskov, JK;Rossmeisl, J;Jónsson, H
通讯作者:
Jónsson, H
影响因子:
32.5
作者:
Morozan, Adina;Jousselme, Bruno;Palacin, Serge
通讯作者:
Palacin, Serge
影响因子:
21.8
作者:
Serpell, Christopher J.;Cookson, James;Beer, Paul D.
通讯作者:
Beer, Paul D.
影响因子:
4.5
作者:
Neergat, M.;Gunasekar, V.;Rahul, R.
通讯作者:
Rahul, R.