Surface structures of ultrathin vanadium oxide films on Pd()

The structure of the V2O3(0001) surface: A scanned-energy mode photoelectron diffraction study

“…The V 2 O 3 (0001) films were grown on a Pd(111) substrate using methods initially characterised by the group of Netzer and coworkers [6,7,9]. The Pd(111) substrate was first cleaned in situ by cycles of 1 keV Ar + ion bombardment and annealing to 600ºC to achieve a clean (1x1) ordered surface as indicated by SXPS and LEED.…”

“…Well-ordered V 2 O 3 (0001) films, as characterised by the low energy electron diffraction (LEED) pattern, have been grown on a range of substrates including W(110) [4], Cu 3 Au(100) [5], Au(111) [4], Pd(111) [6,7,8,9,10] and Rh(111) [11,12,13].…”

Reversible structural transformation of FeOx nanostructures on Pt under cycling redox conditions and its effect on oxidation catalysis

“…15 For example, FeO on Pt(111) 22 and VO on Pd(111) 23 are composed of a layer of transition metal (TM) at the interface and one layer of O atoms at the topmost surface. For VO 2 on Pd(111) 24 and CeO 2 on Au(111), 14 the TM layer sits between the top O layer and the O layer at the interface. The O-TM-O trilayer structure has been shown to be an important surface oxide phase upon oxidation of TM surfaces.…”

The local structure of OH species on the V2O3(0001) surface: A scanned-energy mode photoelectron diffraction study

“…This method of preparing the surface overcomes the complications of producing well-ordered stoichiometric surfaces on bulk oxide samples and is well-established for V 2 O 3 . In particular, well-ordered V 2 O 3 (0001) films, as characterised by their low energy electron diffraction (LEED) pattern, have been grown on a range of substrates including W(110) [4], Cu 3 Au(100) [5], Au(111) [4], Pd(111) [6,7,8,9,10] and Rh(111) [11,12,13], and here we followed the methodology established for growth on Pd(111). As a complement to this experimental structure determination we also present the results of ab initio density-functional theory (DFT) cluster calculations of the principle structural models discussed.…”