Cluster Size Effects in the Photocatalytic Hydrogen Evolution Reaction

Abstract

The photocatalytic water reduction reaction on CdS nanorods was studied as function of Pt cluster size. Maximum H2 production is found for Pt46. This effect is attributed to the size dependent electronic properties (e.g., LUMO) of the clusters with respect to the band edges of the semiconductor. This observation may be applicable for the study and interpretation of other systems and reactions, e.g. H2O oxidation or CO2 reduction.

Visible-light-driven hydrogen production from water in a noble-metal-free system catalyzed by zinc porphyrin sensitized MoS 2 /ZnO

“…It has been widely recognized that platinum is a highly active cocatalyst for photocatalytic hydrogen evolution reaction [50][51][52]. For comparison purposed, the composite photocatalysts of ZnTCPP-Pt/ZnO were prepared for visible light induced rate of 67 µmol h -1 g -1 , which is lower than that of 0.50 wt% ZnTCPP-MoS 2 /ZnO photocatalyst (75 µmol h -1 g -1 , Fig.…”

Rational synthesis and the structure-property relationships of nanoheterostructures: a combinative study of experiments and theory

“…Heitz et al 29 Figure 4 (a) Interfacial model of the {222}(6 × 6) MgO-(6 × 6) Cu supercell. 53 Rational synthesis and structure-property relationships of NHSs B Xu et al utilized ALD to deposit size-controlled Pt clusters onto a CdS nanowire.…”

Molecular dynamical simulations of melting behaviors of metal clusters

“…due to their peculiar physical and chemical properties. [1][2][3][4][5][6] Studies on the properties of clusters (for example, the ground-state geometric and electronic structure) have become a very important filed.…”