| 表面缺陷对一氧化碳和甲基基团在金红石TiO2(110)表面吸附的影响 |
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| 引用本文： | 唐登芳,陈 晓,郭 庆,杨文绍.表面缺陷对一氧化碳和甲基基团在金红石TiO2(110)表面吸附的影响[J].化学物理学报,2021,34(3):249-255. |
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| 作者姓名： | 唐登芳 陈 晓 郭 庆 杨文绍 |
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| 作者单位： | 浙江师范大学杭州高等研究院，杭州 311231;南方科技大学化学系，深圳 518055 |
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| 摘 要： | 本文利用程序升温脱附技术研究了氧空位浓度对甲基基团和CO在R-TiO2(110)表面吸附的影响. 结果表明，随着氧空位浓度的变化，吸附在桥氧位的甲基基团和吸附在五配位Ti4+位点上的CO分子的脱附温度呈现了不同的趋势，揭示了表面缺陷可能对R-TiO2(110)不同位点上的物质吸附具有重要影响.
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| 关 键 词： | 程序升温脱附，TiO2(110)，氧空位，吸附位点，表面缺陷 |
| 收稿时间： | 2020/12/31 0:00:00 |
Effects of Surface Defects on Adsorption of CO and Methyl Groups on Rutile TiO2(110) |
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| Deng-fang Tang,Xiao Chen,Qing Guo,Wen-shao Yang.Effects of Surface Defects on Adsorption of CO and Methyl Groups on Rutile TiO2(110)[J].Chinese Journal of Chemical Physics,2021,34(3):249-255. |
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| Authors: | Deng-fang Tang Xiao Chen Qing Guo Wen-shao Yang |
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| Institution: | Hangzhou Institute of Advanced studies, Zhejiang Normal University, Hangzhou 311231, China;Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China |
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| Abstract: | The interaction of reactants with cata-lysts has always been an important subject for catalytic reactions. As a promising catalyst with versatile applications, titania has been intensively studied for
decades. In this work we have investigated the role of bridge bonded oxygen vacancy (Ov) in methyl groups and carbon monox-ide (CO) adsorption on rutile TiO2(110) (R-TiO2(110)) with the temperature pro-grammed desorption technique. The re-sults show a clear different tendency of the desorption of methyl groups adsorbed on bridge bonded oxygen (Ob), and CO molecules on the five coordinate Ti4+ sites (Ti5c) as the Ov concentration changes, suggesting that the surface defects may have crucial influence on the absorption of species on different sites of R-TiO2(110). |
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| Keywords: | Temperature programmed desorption TiO2(110) Bridge bonded oxygen va-cancy Adsorption sites Surface defects |
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