Adsorption properties of CO molecule on the orthorhombic structure LaMnO3 (010) surface

Adsorption properties of CO molecule on the orthorhombic structure LaMnO3 (010) surface
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CO分子在斜方结构LaMnO3(010)表面的吸附特性

DOI:
10.1016/j.commatsci.2014.10.042
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发表时间:
2015-02
影响因子:
3.3
通讯作者:
Hu Jifan
Hu Jifan
中科院分区:
材料科学3区
文献类型:
--
作者:
Shi Changmin;Sun Lihui;Qin Hongwei;Wang Xiaofeng;Li Ling;Hu Jifan

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采用密度泛函理论研究了CO分子在正交结构LaMnO 3(0 1 0)表面的吸附性质. Mn-CO结构的构型是CO分子在MnO 2封端的LaMnO 3(0 1 0)表面上最适合的吸附方式。态密度(DOS)结果表明,CO分子与Mn位的吸附机制源于Mn-3d和CO-2 p轨道间的杂化相互作用. CO分子向LaMnO 3(0 1 0)表面的电子转移可以调节LaMnO 3(0 1 0)表面的电子性质。结果表明,LaMnO 3是一种很有前途的CO气敏材料。
Density functional theory method is employed to investigate the adsorption properties of CO molecule on the orthorhombic structure LaMnO3(0 1 0) surface. The configuration of Mn–CO structure is the most suitable adsorption way for the CO molecule adsorbed on the MnO2-terminated LaMnO3(0 1 0) surface. The results of the density of states (DOSs) indicate that the adsorption mechanism between the CO molecule and the Mn site originates from the hybridization interaction between the Mn-3d and CO-2p orbital. The electronic property of the LaMnO3(0 1 0) surface can be modulated by the transferred electrons from CO molecule to surface. The results indicate that the LaMnO3may be a promising gas-sensing material to detect the CO gas.
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