Molecular beam studies of the F atom reaction with propyne: Site specific reactivity

Functionalization of two-dimensional 1T'-ReS2 with surface ligands for use as a photocatalyst in the hydrogen evolution reaction: a first-principles calculation study

Density functional theory calculations were performed to tune the band edge positions of two-dimensional 1T'-ReS2 by functionalization with surface ligands. A shift in the band edge was caused by the intrinsic dipole of the ligand and the induced dipole at the ligand/ReS2 interface. The upward shift in the band edge was tuned over a large range by choosing suitable polar ligands, controlling the surface coverage by the ligand, functionalizing the ligand and building heterostructures. The C6H5CN/ReS2/MoS2 and C6H5CH2CN/ReS2/MoS2 van der Waals heterostructures are ideal candidates for use as photocatalysts in the splitting of water as a result of their strong absorption in the visible region, suitable band edge positions, reduced electron-hole recombination and good stability. Our findings show the potential for creating novel photocatalysts based on van der Waals heterostructures of ReS2.

A crossed molecular beam study on the dynamics of F atom reaction with SiH4

In this report, the dynamics of the F+SiH4 reaction has been studied using the universal crossed molecular beam method. Angular resolved time-of-flight spectra have been measured for all reaction products in a single set of experiments. Two different reaction channels have been observed: HF+SiH3 and SiH3F+H. Product angular distributions as well as energy distributions were determined for these two product channels. Experimental results show that the HF product is forward scattered relative to the F atom beam direction, while the SiH3F product is backward scattered relative the F atom beam direction, suggesting that two reaction channels proceed with distinctive reaction dynamics. The relative branching ratios of the two channels have also been estimated.