Atomically resolved determination of the adsorption sites as a function of temperature and coverage: HS2 on Si(111)-(7 x 7)

Article Abstract:

Research was conducted to examine the adsorption properties of H2S on Si(111)-(7 x 7) using a variable-temperature ultrahigh vacuum scanneling tunneling microscope. Results indicate that H2S adsorbs dissociatively at submonolayer coverage with H bonded to a rest atom and HS bonded to an adatom. Findings reveal that adsorption is site selective and that the adsorption site preference depends on temperature.

Hydrogen sulfide, Atoms

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The effect of CO adsorption at room temperature on the structure of supported Pt particles

Article Abstract:

A study was conducted to better understand the applicability of linear-to-bridged ratio of adsorbed CO for investigating the electronic properties of catalysts. The study investigated the impact of CO adsorption on the geometry of small metal particles in Pt/LTL and Pt/SiO2 at room temperature with different support acidities using XAFS spectroscopy. Experimental methodology and results are discussed.

Usage, Gases, Spectrum analysis, Spectroscopy, Gas absorption, Gas adsorption, Metal catalysts

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