Insight into the suppressive effects of sulphoxy species on the NO-D2 reaction on platinum surfaces: A surface science approach

► NO dissociation is suppressed in the presence of S18O2, O atoms and sulphoxy species. ► Suppressive effects exerted by O atoms and sulphoxy species exist for the NO-D reaction. ► Sulphoxy species-induced suppression of the NO-D reaction weakens NO-Pt interactions. ► Site blocking effects of sulphoxy species and O atoms does not suppress the NO-D reaction.