Density function theory study of the adsorption and dissociation of carbon monoxide on tungsten nanoparticles.

作者信息

Weng Meng-Hsiung, Ju Shin-Pon, Chen Hsin-Tsung, Chen Hui-Lung, Lu Jian-Ming, Lin Ken-Huang, Lin Jenn-Sen, Hsieh Jin-Yuan, Yang Hsi-Wen

机构信息

Department of Mechanical and Electro-Mechanical Engineering, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung, Taiwan 804, ROC.

出版信息

J Nanosci Nanotechnol. 2013 Feb;13(2):1068-73. doi: 10.1166/jnn.2013.6119.

DOI:10.1166/jnn.2013.6119

PMID:23646573

Abstract

The adsorption and dissociation properties of carbon monoxide (CO) molecule on tungsten W(n) (n = 10-15) nanoparticles have been investigated by density-functional theory (DFT) calculations. The lowest-energy structures for W(n) (n = 10-15) nanoparticles are found by the basin-hopping method and big-bang method with the modified tight-binding many-body potential. We calculated the corresponding adsorption energies, C-O bond lengths and dissociation barriers for adsorption of CO on nanoparticles. The electronic properties of CO on nanoparticles are studied by the analysis of density of state and charge density. The characteristic of CO on W(n) nanoparticles are also compared with that of W bulk.

摘要