Local field distribution and configuration of CO molecules adsorbed on the nanostructure platinum surface  

作　　者：黄晓菁 何素贞 吴晨旭 

机构地区：[1]Soft Condensed Matter Lab, Department of Physics, Xiamen University, Xiamen 361005, China [2]Department of Physics, School of Science, Jimei University, Xiamen 361021, China

出　　处：《Chinese Physics B》2006年第10期2389-2396,共8页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Grant Nos 10225420, 90206039 and 20021002）.

摘　　要：This paper shows that the local electric field distribution near the nanostructure metallic surface is obtained by solving the Laplace equation, and furthermore, the configuration of CO molecules adsorbed on a Pt nanoparticle surface is obtained by using Monte Carlo simulation. It is found that the uneven local electric field distribution induced by the nanostructure surface can influence the configuration of carbon monoxide （CO） molecules by a force, which drags the adsorbates to the poles of the nanoparticles. This result, together with our results obtained before, may explain the experimental results that the nanostructure metallic surface can lead to abnormal phenomena such as anti-absorption infrared effects.This paper shows that the local electric field distribution near the nanostructure metallic surface is obtained by solving the Laplace equation, and furthermore, the configuration of CO molecules adsorbed on a Pt nanoparticle surface is obtained by using Monte Carlo simulation. It is found that the uneven local electric field distribution induced by the nanostructure surface can influence the configuration of carbon monoxide （CO） molecules by a force, which drags the adsorbates to the poles of the nanoparticles. This result, together with our results obtained before, may explain the experimental results that the nanostructure metallic surface can lead to abnormal phenomena such as anti-absorption infrared effects.

关 键 词：local electric field adsorbed molecules nanostructure metal surface 

分 类 号：TB383[一般工业技术—材料科学与工程]