کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1859430 | 1037324 | 2011 | 7 صفحه PDF | دانلود رایگان |
The adsorption, diffusion and dissociation properties of O2 on the icosahedron (Ih) Ni@Pt12 core–shell nanoparticle were investigated using the ab initio density functional theory calculations. It is found that, compared with the Pt(111) surface, the Ih Ni@Pt12 core–shell nanoparticle can enhance the adsorption, diffusion and dissociation of O2, as well as the adsorption and diffusion of the atomic O (the dissociation product of O2), and therefore serve as a good catalyst for oxygen reduction reaction. Our study gives a reasonable theoretical explanation to the high catalytic activity of the Ni@Pt core–shell nanoparticles for the oxygen reduction reaction.
► The Ni core can enhance the stability of the Ih Ni@Pt12 core–shell nanoparticle.
► O2 prefers the top–bridge–top configuration on the Ih Ni@Pt12.
► The Ih Ni@Pt12 can enhance the adsorption, diffusion and the dissociation of O2.
► The Ih Ni@Pt12 can serve as a good catalyst for the oxygen reduction reaction.
Journal: Physics Letters A - Volume 375, Issue 35, 15 August 2011, Pages 3142–3148