TY - JOUR
T1 - Correlation between surface chemistry and electrocatalytic properties of monodisperse PtxNi1-x nanoparticles
AU - Wang, Chao
AU - Chi, Miaofang
AU - Wang, Guofeng
AU - Van Der Vliet, Dennis
AU - Li, Dongguo
AU - More, Karren
AU - Wang, Hsien Hau
AU - Schlueter, John A.
AU - Markovic, Nenad M.
AU - Stamenkovic, Vojislav R.
PY - 2011/1/7
Y1 - 2011/1/7
N2 - Monodisperse and homogeneous PtxNi1-x alloy nanoparticles of various compositions are synthesized via an organic solution approach in order to reveal the correlation between surface chemistry and their electrocatalytic properties. Atomic-level microscopic analysis of the compositional profile and modeling of nanoparticle structure are combined to follow the dependence of Ni dissolution on the initial alloy composition and formation of the Pt-skeleton nanostructures. The developed approach and acquired knowledge about surface structure-property correlation can be further generalized and applied towards the design of advanced functional nanomaterials. Monodisperse and homogeneous Pt-Ni alloy nanoparticles of various compositions are synthesized via an organic solution approach, and applied as catalysts for electrocatalytic reduction of oxygen. By combining atomic-level microscopic analysis of composition profile and modeling of nanoparticle structure, a clear picture of the dependence of Ni dissolution from the near-surface region on the initial alloy composition is illustrated.
AB - Monodisperse and homogeneous PtxNi1-x alloy nanoparticles of various compositions are synthesized via an organic solution approach in order to reveal the correlation between surface chemistry and their electrocatalytic properties. Atomic-level microscopic analysis of the compositional profile and modeling of nanoparticle structure are combined to follow the dependence of Ni dissolution on the initial alloy composition and formation of the Pt-skeleton nanostructures. The developed approach and acquired knowledge about surface structure-property correlation can be further generalized and applied towards the design of advanced functional nanomaterials. Monodisperse and homogeneous Pt-Ni alloy nanoparticles of various compositions are synthesized via an organic solution approach, and applied as catalysts for electrocatalytic reduction of oxygen. By combining atomic-level microscopic analysis of composition profile and modeling of nanoparticle structure, a clear picture of the dependence of Ni dissolution from the near-surface region on the initial alloy composition is illustrated.
KW - Pt skeleton
KW - PtNi alloy nanoparticles
KW - composition dependent surface chemistry
KW - electrocatalysis
KW - oxygen reduction reaction
UR - http://www.scopus.com/inward/record.url?scp=78650609013&partnerID=8YFLogxK
U2 - 10.1002/adfm.201001138
DO - 10.1002/adfm.201001138
M3 - Article
AN - SCOPUS:78650609013
SN - 1616-301X
VL - 21
SP - 147
EP - 152
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 1
ER -