| CO吸附在过渡金属铂表面的微观动力学研究 |
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| 引用本文： | 贾红英,王泽新.CO吸附在过渡金属铂表面的微观动力学研究[J].物理化学学报,2004,20(2):144-148. |
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| 作者姓名： | 贾红英 王泽新 |
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| 作者单位： | College of Chemistry and Material Science, Shandong Normal University, Jinan 250014 |
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| 基金项目： | 山东省自然科学基金(Y2002B09)资助项目~~ |
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| 摘 要： | 建立了处理双原子分子-表面相互作用的推广的LEPS势.借助推广的LEPS势,系统研究了一氧化碳分子在铂低指数表面吸附的动力学特性,重现了低指数表面的分子吸附热、吸附几何及本征振动等实验数据；鉴定了某些不合理的文献信息,预测了实验尚未探测到的重要信息:预测到Pt(100)表面四重洞位的C－O伸缩振动频率为1 962.60 cm－1;预测到Pt(110)表面吸附态的C－O及C－Pt键长分别为115.1、147 pm.
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| 关 键 词： | 推广的LEPS势 吸附 过渡金属 低指数表面 |
| 收稿时间： | 2003-06-18 |
| 修稿时间： | 2003年6月18日 |
Study of Microdynamics for CO Adsorbing on Pt Low- index Surfaces |
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| Jia Hong Ying Wang Ze Xin.Study of Microdynamics for CO Adsorbing on Pt Low- index Surfaces[J].Acta Physico-Chimica Sinica,2004,20(2):144-148. |
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| Authors: | Jia Hong Ying Wang Ze Xin |
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| Institution: | College of Chemistry and Material Science, Shandong Normal University, Jinan 250014 |
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| Abstract: | On the basis of 5 MP semiempirical method used to deal with the interaction between atoms and metal surfaces,an extended LEPS potential between CO and Pt surface has been constructed.The adsorption mechanism of CO on three Pt low index surfaces was investigated by the extended LEPS potential.We reproduce well the experimental data of the adsorption sites,the adsorption geometry,the binding energy and the eigenvibration for CO on Pt surfaces.We also evaluate some unreasonable experimental data in the literatures and predict the following important information that has not been observed:on Pt (100),an 1 962.60 cm-1 frequency in fourfold hollow site; and on Pt (110),the C-O and Pt-C distances as 115.1,147 pm,respectively have been predicted. |
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| Keywords: | The extended LEPS potential Adsorption Transition metal Low index surfaces |
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