Surface Science at Ambient Pressures Part I: Atomic Structure with High-Pressure STM

Project leading scientist: Heath Kersell. Other members involved: Hyunsoo Lee.

We use high-pressure scanning tunneling microscopy to investigate the model single crystal catalyst surface reconstructions at gas pressures as high as 1 bar. Flat and stepped single metal surfaces are used as model catalysts. Ambient-pressure X-ray photoelectron spectroscopy (see below) and infrared reflection-adsorption spectroscopy are employed to identify the chemical states and adsorbate coverages relevant to the restructuring processes.

Related publications:

Eren, B.; Zherebetskyy, D.; Patera, L. L.; Wu, C. H.; Bluhm, H.; Africh, C.; Wang, L.-W.; Somorjai, G. A.; Salmeron, M.

Activation of Cu(111) surface by Decomposition into Nanoclusters Driven by CO Adsorption

Science, 2016 351 475-478. http://www.sciencemag.org/cgi/content/full/351/6272/475?ijkey=u8TEuHJL7OWUY&keytype=ref&siteid=sci

Eren, B.; Zherebetskyy, D.; Hao, Y.; Wang, L.-W.; Somorjai, G. A.; Salmeron, M.

One-dimensional Nanoclustering of the Cu(100) Surface under CO Gas in the mbar Pressure Range

Surf. Sci. 2016 xx xxx-xxx. http://dx.doi.org/10.1016/j.susc.2016.04.016

Eren, B.; Liu, Z.; Stacchiola, D.; Somorjai, G. A.; Salmeron, M.

Structural Changes of Cu(110) and C (110)-(2x1)-O Surfaces Under Carbon Monoxide in the Torr Pressure Range Studied With Scanning Tunneling Microscopy and Infrared Reflection Absorption Spectroscopy

J. Phys. Chem. C, 2016 120 8227-8231. http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.6b02143