Fragmentation processes of vanadium and niobium oxide clusters sputtered by ion bombardment

Prediction of the structures and heats of formation of MO2, MO3, and M2O5 for M = V, Nb, Ta, Pa

“…The ∠V–O br –V is bent by <20° from linearity. Mass spectrometry studies on the composition of group 5 M 2 O 5 ionic clusters shows that fragmentation leads to such MO 2 and MO 3 fragments, 97,98 consistent with the above analysis and for the analysis described below.…”

Surface structure of mass-selected niobium oxide nanoclusters on Au(111)

“…One of the key advantages of using inverse systems is the ability to apply scanning tunneling microscopy (STM) to image the structure and morphology of the oxide-metal surface for various conditions, e.g. temperature annealing or degree of oxide reduction [17,34,[41][42][43][44][45][46][47][48][49][50][51][52][53][54][55]. Typically, these inverse systems are prepared by physical vapor deposition of the metal onto a single crystal metal support; oxidation to form the oxide nanostructure is accomplished by deposition in a background of O 2 , deposition onto an overlayer of an oxidant (e.g.…”

“…H 2 O), or post-oxidation of the deposited metal on the support surface. The resulting oxide nanostructures can exhibit unique structures, compositions and reactivity that are not found in the bulk oxide as a result of interactions with the metal support [17,34,45,48,51,52,56,57].…”