Photocatalytic Semiconductor-Metal Hybrid Nanoparticles: Single-Atom Catalyst Regime Surpasses Metal Tips.

Semiconductor-metal hybrid nanoparticles (HNPs) are promising materials for photocatalytic applications, such as water splitting for green hydrogen generation. While most studies have focused on Cd containing HNPs, the realization of actual applications will require environmentally compatible systems. Using heavy-metal free ZnSe-Au HNPs as a model, we investigate the dependence of their functionality and efficiency on the cocatalyst metal domain characteristics ranging from the single-atom catalyst (SAC) regime to metal-tipped systems.

Effect of Exposed Facets and Oxidation State of CeO Nanoparticles on CO Adsorption and Desorption.

CeO nanoparticles exhibit potential as solid adsorbents for carbon dioxide (CO) capture and storage (CCS), offering precise control over various facets and enhancing their efficiency. This study investigated the adsorption and desorption behaviors of two types of CeO nanoparticles: cubic CeO with primarily {001} facets and polyhedral CeO with mainly {111} facets. The results showed that despite polyhedral CeO's lower quantity, it demonstrated successful adsorption-desorption cycles in both oxidized and reduced states.

October 7th 2023 mass casualty incident in southern Israel: lessons for emergency preparedness and management.

Background: Mass Casualty Incidents (MCIs) pose significant challenges for healthcare systems. While policies are typically crafted based on past experiences, the lessons learned from each incident play a crucial role in enhancing emergency preparedness. On October 7th, 2023, Israel came under the largest terror attack in its history.