IRRAS and TPD Investigations of Carbon Monoxide Adsorption on MBE grown Fe on Pt(100)

Carbon Monoxide Adsorption on Cobalt-Deposited Platinum Single Crystal Surfaces Investigated by IR Reflection-Absorption and Low-Energy Electron Diffraction

“…As for the main absorption bands, the 2065 cm −1 band for the 0.5nm-thick-Co/Pt(100)-hex shifts to low-frequency side with increasing Co thicknesses: the 0.6nm-thickCo/Pt(100)-hex yields the band at 2036 cm −1 . We have previously shown similar thickness dependence of the CO adsorption frequencies for the Fe/Pt(100)-hex bimetallic surfaces [24]. Therefore, the main absorption features located at around 2065 -2075 cm −1 can be assigned to CO adsorption on on-top site of Pt that influenced by the deposited Co positioned nearby (denoted hereafter to Pt(Co)).…”

“…We have reported IRRAS results for CO adsorptions on several bimetallic surfaces having periodic atomic structures [5][6][7]21]. More recently, the MBE-fabricated outermost structures for platinum-based bimetallic surfaces, such as Fe/Pt(111) [22,23], Fe/Pt(100)-hex [24], Ni/Pt(111) [25] and Pd/Pt(111) [26] are investigated by using IRRAS, reflection high-energy electron diffraction (RHEED), and low-energy electron diffraction (LEED).…”