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DOI | 10.1126/science.aav4143 |
Density fluctuations as door-opener for diffusion on crowded surfaces | |
Henss, Ann-Kathrin1; Sakong, Sung2; Messer, Philipp K.1; Wiechers, Joachim3; Schuster, Rolf4; Lamb, Don C.1; Gross, Axel2; Wintterlin, Joost1 | |
2019-02-15 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 363期号:6428页码:715-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | How particles can move on a catalyst surface that, under the conditions of an industrial process, is highly covered by adsorbates and where most adsorption sites are occupied has remained an open question. We have studied the diffusion of O atoms on a fully CO-covered Ru(0001) surface by means of high-speed/variable-temperature scanning tunneling microscopy combined with density functional theory calculations. Atomically resolved trajectories show a surprisingly fast diffusion of the O atoms, almost as fast as on the clean surface. This finding can be explained by a "door-opening" mechanism in which local density fluctuations in the CO layer intermittently create diffusion pathways on which the O atoms can move with low activation energy. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000458874100027 |
WOS关键词 | FUNCTIONAL THEORY ; CARBON-MONOXIDE ; CO ; ADSORPTION ; OXIDATION ; KINETICS ; HYDROGEN ; RU(0001) ; SITE |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/200765 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Ludwig Maximilians Univ Munchen, Dept Chem, Munich, Germany; 2.Univ Ulm, Inst Theoret Chem, Ulm, Germany; 3.Dionex Softron GmbH, Germering, Germany; 4.Karlsruher Inst Technol, Inst Phys Chem, Karlsruhe, Germany |
推荐引用方式 GB/T 7714 | Henss, Ann-Kathrin,Sakong, Sung,Messer, Philipp K.,et al. Density fluctuations as door-opener for diffusion on crowded surfaces[J]. SCIENCE,2019,363(6428):715-+. |
APA | Henss, Ann-Kathrin.,Sakong, Sung.,Messer, Philipp K..,Wiechers, Joachim.,Schuster, Rolf.,...&Wintterlin, Joost.(2019).Density fluctuations as door-opener for diffusion on crowded surfaces.SCIENCE,363(6428),715-+. |
MLA | Henss, Ann-Kathrin,et al."Density fluctuations as door-opener for diffusion on crowded surfaces".SCIENCE 363.6428(2019):715-+. |
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