Nano and Interfacial Catalysis Group

Advanced PEEM/LEEM techniques and Confined Chemistry under Two-dimensional Materials
2018-11-30 18:19:34

 Dynamic imaging of 2D material eptaxial growth

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Deep ultraviolet photoemission electron microscopy (DUV-PEEM)

 Aberration correction low energy electron microscopy (AC-LEEM)

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DUV-PEEM/Hg-PEEM/AC-LEEM/LEED&m-LEED/I-V curve/AES

Spatial resolutions: PEEM/< 5 nm; LEEM/< 3 nm; Temperature: 150 - 1500 K

Energy resolution: < 0.2 eV; Time resolution: ms; Working pressure: up to 10-5 mbar  


 Near ambient pressure photoemission electron microscopy (NAP-PEEM)

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NAP-PEEM/XPS/MBE/High pressure cell/MS

DUV:  177 – 210 nm; Working pressure: ~ 1 mbar;

Spatial resolutions: 50 nm/1 mbar; 10 nm/UHV; Temperature: 150 - 1500 K


 Chemistry and catalysis confined under 2D Material

CO adsorption and desorption at h-BN/Pt(111) interface

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CO intercalates at BN/Pt(111) interface @ RT

 

BN cover enables CO desorption from Pt near RT, e.g. 35 °C

Metal-catalyzed reactions confined under 2D cover

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Confined catalysis under two-dimensional materials

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Confinement field in 2D Nanoreactor and its modulation of catalytic reactions

 

Dynamic surface studies in field-effect devices (e.g. batteries)

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