Photocatalytic HO Production with >30% Quantum Efficiency via Monovalent Copper Dynamics.

Photocatalytic O reduction to HO is a green and promising technology with advantages in cost-effectiveness, sustainability, and environmental friendliness, but its efficiency is constrained by limited selectivity for the two-electron oxygen reduction reaction (ORR) pathway. Here, we anchored isolated Cu atoms with tunable oxidation states onto WO as effective active centers to enhance photocatalytic HO production. Due to the charge compensation between single atoms and the support, the oxidation state of Cu species exhibited a loading-dependent transition between +2 and +1 valence.

Shining Light on Hydrogen: Solar-Powered Catalysis with Transition Metals.

Artificial photosynthesis offers a promising pathway to address environmental challenges and the global energy crisis by converting solar energy into storable chemical fuels such as hydrogen. Among various photocatalysts, transition metal-based materials have garnered significant attention due to their tunable crystal phase, morphology, surface active sites, and other key properties. This review provides a comprehensive overview of recent advances in transition metal-based photocatalysts for hydrogen production, with a particular focus on modification strategies and their underlying mechanisms.

Boosted Hydrogen Evolution via Photoinduced Hole Transfer in Molecular-Level Organic Heterojunction under NIR Photon Excitation.

The energy of sunlight is predominantly concentrated in near-infrared (NIR) region, posing a paramount limitation for practical application of conventional photocatalysts. Organic semiconductors can offer NIR absorption and tunable energy levels simultaneously through molecular engineering, which presents great potential in solar-driven catalysis. However, an individual organic semiconductor typically generates Frenkel excitons with large binding energy, hindering efficient electron-hole separation.

Minimized TiO Loading Improves the Plasmonic Cu Hot Carrier-Driven Methanol Steam Reforming Under Standard Solar Irradiation.

Methanol is a promising liquid organic hydrogen carrier, and developing an efficient method to reform and release hydrogen from it with low thermal input is desirable. This study investigates plasmonic Cu nanoparticles derived from CuAl-LDH for thermo-photo catalytic (TPC) methanol steam reforming (MSR). The reduced catalyst (R-Cu/AlO) absorbs solar light up to 780 nm.

Early Congenital Syphilis Presenting With Severe Congenital Pneumonia and Cutaneous Manifestations in a Neonate at Birth: A Case Report.

Transplacental transmission of spirochetes from an infected mother to the fetus during pregnancy results in the infectious condition known as congenital syphilis (CS). Once a forgotten disease, CS has now re-emerged. We report the clinical case of an early CS in a neonate girl presented with severe congenital pneumonia (pneumonia alba) requiring intubation, along with skin lesions that were visible from birth on the palms and soles of the feet.