Interaction between O2 and neutral/charged Aun (n=1-3) clusters: A comparative study between density-functional theory and coupled cluster calculations

被引:16
作者
Zhao, Yu [1 ]
Khetrapal, Navneet Singh [1 ]
Li, Hui [1 ]
Gao, Yi [2 ,3 ]
Zeng, Xiao Cheng [1 ]
机构
[1] Univ Nebraska, Dept Chem, Lincoln, NE 68588 USA
[2] Chinese Acad Sci, Shanghai Inst Appl Phys, Div Interfacial Water, Shanghai 201800, Peoples R China
[3] Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China
关键词
GOLD CLUSTERS; MOLECULAR-OXYGEN; CATALYTIC-OXIDATION; BASIS-SETS; CO; ACTIVATION; ADSORPTION; COADSORPTION; TRANSITION; ENERGIES;
D O I
10.1016/j.cplett.2013.12.029
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We have performed a benchmark study of molecular O-2 binding on Au-n (n = 1-3) clusters using density-functional theory and high-level coupled-cluster calculations. Based on the computed structural and energetic properties of O2 binding on anionic, cationic, and neutral Aun (n = 1-3), we find that the hybrid functionals (HSE06, PBE0, and B3LYP) and the M06 functional with large basis sets give much more reasonable binding energy of O-2 and O-O bond length compared to GGA functionals (PBE and TPSS). In particular, the HSE06 functional gives the best agreement with CCSD(T)//MP2 method in O-2 binding energy on neutral Au-3. (C) 2013 Elsevier B.V. All rights reserved.
引用
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页码:127 / 131
页数:5
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