Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 120, Issue 41, Pages 23669-23674Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.6b08358
Keywords
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Funding
- NSFC [91545128, 21333001, 11374276, 11574283]
- MOST [2014CB932700]
- Fundamental Research Funds for the Central Universities
- Thousand Talent Program for Young Outstanding Scientists of the Chinese government
- Chinese Academy of Sciences [XDB01020100]
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Atomic insights into the interaction of CO, with the mixed-terminated ZnO(10 (1) over bar0) surface were achieved in detail by low-temperature scanning tunneling microscopy (LT-STM) together with density functional theory (DFT) calculations. The binding site and adsorption geometry were directly imaged by LT-STM, revealing that the CO2 molecules are chemisorbed and turned into surface carbonate species. The strong interaction of CO2 with the ZnO(10 (1) over bar0) surface in turn activates the surface, i.e., reconstructs the local surface such that facilitates further CO2 bindings, leading to the formation of a one-dimensional assembly structure which grows along the [000 (1) over bar] direction. DFT simulations indicated that the superior agglomeration energies along < 000 (1) over bar > directions as well as the CO2-induced surface reconstruction are responsible for the directional growth of the surface carbonate chains.
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