Abstract
Surface chemical processes generally involve the transfer of mass within a complex adlayer structure. Relating mass transfer in such complex systems to the underlying microscopic events is a formidable problem in surface chemical physics. We have used scanning tunneling microscopy (STM) to image mass transfer on Ag(110) and its vicinals in a variety of surface chemical processes. By investigating a broad range of phenomena on these surfaces, including self diffusion, adsorption, faceting, and reaction, we test and obtain a more comprehensive understanding of how mass is transferred within the complex surface chemical milieu. For these vicinal Ag(110) surfaces we find that mass exchange is highly efficient event at room temperature. The mechanisms for mass transfer do not appear unique, but new channels open, as needed, to satisfy the chemical potential balance and sustain mass transfer. For oxidation reactions on Ag(110), crystallographic steps and substrate reconstruction are key elements to the mass-exchange mechanisms.
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Reutt-Robey, J.E., Pai, WW. (1997). Mass Transfer in Surface Chemical Processes: Adsorption, Faceting and Reaction on Ag(110). In: Tringides, M.C. (eds) Surface Diffusion. NATO ASI Series, vol 360. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-0262-7_42
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DOI: https://doi.org/10.1007/978-1-4899-0262-7_42
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