Ru single atoms regulate electron distribution in defective NiFe LDH for enhanced oxygen evolution reaction
Peer-Reviewed Publication
Updates every hour. Last Updated: 31-May-2026 16:15 ET (31-May-2026 20:15 GMT/UTC)
The advancement of sustainable energy solutions hinges on highly efficient oxygen evolution reaction (OER) catalysts, which are crucial for water electrolysis and metal-air batteries. Ruthenium single atoms anchored on defective nickel-iron layered double hydroxide (Ru SAs/D-NiFe LDH@NF), synthesized via hydrothermal etching, emerge as a breakthrough catalyst. It achieves a low overpotential of 206 mV at 50 mA cm-2 and exceptional stability over 350 hours in zinc-air batteries. Density functional theory confirms Ru single atoms optimize electron distribution near defects, accelerating reaction kinetics. This innovation sets a new benchmark for next-generation catalysts, driving scalable green energy technologies.
Researchers have uncovered the fundamental mechanism behind persistent dark current in Te-Se alloy-based infrared photodiodes, identifying interface metallization as the culprit. High interface stress between Te0.6Se0.4 and ZnO causes Se atoms to diffuse, forming a detrimental Te0.75Se0.25 metallic phase that hinders carrier transport. By introducing an innovative TeO2 modification layer, scientists successfully mitigated interface stress, prevented metallization, and dramatically improved device performance with significantly reduced dark current and enhanced quantum efficiency. This breakthrough in interface engineering opens new possibilities for high-performance infrared detection technologies in applications ranging from autonomous driving to medical imaging and space exploration.
Reduction of CO2 into fuels and chemicals by means of photocatalysis or electrocatalysis offers a sustainable route to mitigate greenhouse emissions. Hydrophobic metal-organic frameworks (MOFs) have emerged as promising photo/electro-catalysts for CO2 reduction due to their tunable porosity, high surface areas, and ability to repel water for suppressing competing hydrogen evolution. This review summarized the recent advances of hydrophobic MOFs for photo/electrocatalytic CO2 reduction, catalogged by the principle mechanism of CO2 reducion, design strategies of hydrophobic MOFs and the applications of hydrophobic MOFs in CO2 reduction. The personal perspectives are also proposed to inspire more efforts in design diversified hydrophobic MOFs for efficient CO2 utilization.
Assisted evolution could help corals survive future heatwaves, but careful trait choice and strong repeated selection will be needed for it to be effective.