Atomic-Scale Observation of Sequential Oxidation Process on Co(0001)

Hou, Ruijie1; Zeng, Ziling1; Wang, Shaoshan1; Tang, Dengfang1; Tan, Yuan1; Chen, Xingkun1; Yang, Wenshao1; Huang, Chuanqi1; Guo, Qing4; Ding, Yunjie1,2,3; Yang, Xueming1,4

2022-06-16

10.1021/acs.jpclett.2c01238

Journal of Physical Chemistry Letters   Impact Factor & Quartile

1948-7185

Oxygen dissociation and activation on surfaces play a crucial role in heterogeneous catalysis and oxidation processes. In this study, we have conducted a series of scanning tunneling microscopy (STM) experiments combined with density functional theory calculation to investigate the oxidation process in a single crystal Co(0001) surface. For the first time, we show a comprehensive in situ STM study of the oxidation process of Co(0001) from an atomic point of view. With low O-2 exposure at 90 K, chemisorbed oxygen pairs are observed showing a dumbbell-like STM feature. At a relatively higher temperature range of 160-250 K, a large-scale p(2 X 2)-O adlayer forms and the O adatoms show surprisingly high mobility. With the temperature of Co(0001) kept at >= 300 K, adsorption of oxygen leads to fast oxidation of the surface to amorphous cotton-like protrusions, which occur initially at the step/edge sites and interstitial defect sites.

SCI ; EI

English

NI Journal Papers

Corresponding

National Natural Science Foundation of China[21973084,21803056,22102149,22102147] ; Zhejiang Provincial Natural Science Foundation of China["LZ22B030003","LQ20B030008","LQ20B030005","LQ21B030009"]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical

WOS:000813423400001

AMER CHEMICAL SOC

20222512248441

Catalysis ; Density functional theory ; Gas adsorption ; Oxidation ; Oxygen ; Single crystals

Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4 ; Crystalline Solids:933.1

Web of Science

1.Zhejiang Normal Univ, Hangzhou Inst Adv Studies, Hangzhou 311231, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
4.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China

Hou, Ruijie,Zeng, Ziling,Wang, Shaoshan,et al. Atomic-Scale Observation of Sequential Oxidation Process on Co(0001)[J]. Journal of Physical Chemistry Letters,2022,13(23):5131-5136.

Hou, Ruijie.,Zeng, Ziling.,Wang, Shaoshan.,Tang, Dengfang.,Tan, Yuan.,...&Yang, Xueming.(2022).Atomic-Scale Observation of Sequential Oxidation Process on Co(0001).Journal of Physical Chemistry Letters,13(23),5131-5136.

Hou, Ruijie,et al."Atomic-Scale Observation of Sequential Oxidation Process on Co(0001)".Journal of Physical Chemistry Letters 13.23(2022):5131-5136.