Chemisorption of nitrogen on platinum {111}: Reflection-absorption infrared spectroscopy

A Study of Adsorption of CO on Hydrogen Covered Pt(111) Surface Using Electron-Stimulated Desorption Spectroscopy

“…4. Similar results have been observed on Pt surfaces at 300 K by ShigeishiKing (2063 shifts to 2100 cm À1 ) 9) and by Crossley and King (2064 shifts to 2101 cm À1 ). 10) This peak has broadened after 6 to 20L-CO exposure.…”

Molecular N2 chemisorption—specific adsorption on step defect sites on Pt surfaces

“…The existence of this adsorption site was seriously questioned by later studies of N 2 adsorption on silicasupported Pt catalysts and Pt͑111͒ foil. 3,4 It has recently been proposed that molecular nitrogen is a specific sensor for vacancy defect sites on the Pt͑111͒ surface, and that N 2 does not chemisorb on the nondefective Pt͑111͒ surface. 5 These defects were produced by controlled ion bombardment of the Pt͑111͒ surface, and were capable of adsorbing N 2 molecules that exhibit a frequency in the 2222-2244 cm Ϫ1 range.…”

The 308 nm laser photodissociation of HN3 adsorbed on Si(111)-7 × 7

“…For N 2 adsorbed on metal surfaces, the NN stretching mode was found to range from 180 to 277 meV, depending upon the N 2 adsorption geometry [30][31][32][33]. When N 2 adsorbed "end-on" on Ni(110) [31], W(100) [32] and Pt(111) [33], this mode was observed to be 265 meV or higher frequencies, while it was adsorbed "side-on" on Fe(1 11) [30], its vibrational frequency was shifted down to 185 meV.…”

“…When N 2 adsorbed "end-on" on Ni(110) [31], W(100) [32] and Pt(111) [33], this mode was observed to be 265 meV or higher frequencies, while it was adsorbed "side-on" on Fe(1 11) [30], its vibrational frequency was shifted down to 185 meV. The observed 206 meV peak here, thus suggests a "side-on" adsorption of N 2 on Si(1 11).…”