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Fang Z, Bao A, Lai Y, Yao L, Zeng Z, Hou R, Li J, Tang D, Chen X, Huang C, Tan Y, Chen X, Guo Q, Yang X, Yang W. Direct Visualization of CO Interaction on Oxygen Poisoned Co(0001). J Phys Chem Lett 2023; 14:9385-9391. [PMID: 37823819 DOI: 10.1021/acs.jpclett.3c02479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
The poisoning of catalysts has always been a vital issue in catalytic reactions. In this study, direct observation of the interaction of CO and oxygen-poisoned Co(0001) has been achieved with scanning tunneling microscopy (STM), temperature-programmed desorption (TPD), and density functional theory calculation. A two-stage adsorption process of CO on a well-prepared p(2×2)-O layer covered Co(0001) was directly visualized. With increasing annealing time at a certain temperature after the CO dosage, the ordered (2 × 2) pattern formed in the first stage can be recovered, suggesting the weak interaction of CO with the O-covered Co(0001) surface in the latter stage. Compared to the clean Co(0001) surface, on an oxygen-poisoned surface, no further reaction was observed, illustrating the poisoning of the catalyst. Moreover, TPD results are in good agreement with the STM observation; a desorption energy of 0.35 eV is evaluated with a simple but accurate scheme.
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Affiliation(s)
- Zihao Fang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Anran Bao
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Yuemiao Lai
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Lanlan Yao
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Ziling Zeng
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Ruijie Hou
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Junhao Li
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Dengfang Tang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Xiao Chen
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
- Institute of Advanced Science Facilities, Shenzhen, Guangdong 518107, China
| | - Chuanqi Huang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Yuan Tan
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Xingkun Chen
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Qing Guo
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Xueming Yang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Wenshao Yang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
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Wang F, Tan B, Chen Y, Fang X, Jia G, Wang H, Cheng G, Shao Z. A visual knowledge map analysis of mine fire research based on CiteSpace. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:77609-77624. [PMID: 35680744 DOI: 10.1007/s11356-022-20993-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
Mine fire has always been a serious disaster in coal industry; many academic achievements have poured out in the past two decades for solving this problem. In this study, visual analysis was conducted to grasp the hotspots and development trend of mine fire research. Papers that published in 1999-2020 were retrieved as the data basis from Web of Science, and CiteSpace was used to carry out knowledge map analysis. The results shown that number of papers has increased steadily since 2005 and achieved explosive growth since 2014. Deng J is the first published author among many scholars. China, the USA, and Australia are active areas in mine fire research and China University of Mining and Technology ranks first in this field. The highest co-occurrence frequency keyword is "spontaneous combustion." International Journal of Coal Geology and Fuel provide guidance for mine fire research. Fire prevention technology, low carbon, ecology, and sustainable development are the hot research in recent years. The prevention and control of mine fire from combustion mechanism should be further strengthened.
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Affiliation(s)
- Feiran Wang
- School of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Bo Tan
- School of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China.
| | - Yue Chen
- School of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Xiyang Fang
- School of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Guowei Jia
- The Administrative Center for China's Agenda 21, Beijing, 100036, China
| | - Haiyan Wang
- School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Gang Cheng
- School of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Zhuangzhuang Shao
- School of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
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Hou R, Zeng Z, Wang S, Tang D, Tan Y, Chen X, Yang W, Huang C, Guo Q, Ding Y, Yang X. Atomic-Scale Observation of Sequential Oxidation Process on Co(0001). J Phys Chem Lett 2022; 13:5131-5136. [PMID: 35657666 DOI: 10.1021/acs.jpclett.2c01238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
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 O2 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 × 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.
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Affiliation(s)
- Ruijie Hou
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Ziling Zeng
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Shaoshan Wang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Dengfang Tang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Yuan Tan
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Xingkun Chen
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Wenshao Yang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Chuanqi Huang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
| | - Qing Guo
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yunjie Ding
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
- The State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Xueming Yang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311231, China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
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