Water (Non-)Interaction with MoO₃.

ABSTRACT: Molybdenum(VI) oxide (MoO₃) is used in a number of technical processes such as gas filtration and heterogeneous catalysis. In these applications, the adsorption and dissociation of water on the surface can influence the chemistry of MoO₃ and thus the course of heterogeneous reactions. We use ambient pressure X-ray photoelectron spectroscopy to study the interaction of water with a stoichiometric MoO₃ surface and a MoO₃ surface that features oxygen defects and hydroxyl groups. The experimental results are supported by density functional theory calculations. We show that on a stoichiometric MoO₃(010) surface, where Mo sites are unavailable, water adsorption is strongly disfavored. However, the introduction of surface species, which can i

SUBMITTER: Head AR 

PROVIDER: S-EPMC7493422 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature