Zinc Single Atom Confinement Effects on Catalysis in 1T-Phase Molybdenum Disulfide.

Active sites are atomic sites within catalysts that drive reactions and are essential for catalysis. Spatially confining guest metals within active site microenvironments has been predicted to improve catalytic activity by altering the electronic states of active sites. Using the hydrogen evolution reaction (HER) as a model reaction, we show that intercalating zinc single atoms between layers of 1T-MoS (Zn SAs/1T-MoS) enhances HER performance by decreasing the overpotential, charge transfer resistance, and kinetic barrier.

Terahertz Conductivity of Semiconducting 2H and Metallic 1T Phases of Molybdenum Disulfide.

Molybdenum disulfide (MoS) has been extensively studied in its commonly occurring semiconducting 2H phase. Recent synthetic advances have enabled the bulk synthesis of the catalytically promising metallic 1T phase. However, the conductivity of bulk 1T-MoS has not been well characterized to ascertain the carrier transport properties.