Single-Atom-Embedded Nitrogen-Doped Graphene as Efficient Electrocatalysts for the CO Reduction Reaction.

Single-atom catalysts (SACs) have displayed unprecedented activity and selectivity for electrochemical CO reduction reaction (CORR). Herein, a series of metal single atoms embedded on nitrogen-doped graphene (M-NG, where M = In, Tl, Ge, Sn, Pb, Sb, and Bi) is systematically evaluated as CORR electrocatalysts by density functional theory (DFT) calculations. The computational results show that most M-NG exhibit better CORR selectivity over the hydrogen evolution reaction (HER).

Two-step metabolic activation to ortho-benzoquinone intermediate and its role in 2,3,5,4'-tetrahydroxystilbene-2-O-β-D-glucoside-induced liver injury in mice.

2,3,5,4'-tetrahydroxystilbene-2-O-β-D-glucoside (TSG) is the most abundant constituent of Polygonum multiflorum and is exclusively found in this herb. This renowned herbal medicine has been documented to lead to liver damage in humans. The present study demonstrated that TSG underwent 2-step metabolic activation to generate a reactive metabolite, involving both intestinal and hepatic metabolisms.

NaMPO (M = K, Rb): Two Potential Zero-Order Waveplate Materials with DUV Cutoff Edges.

Zero-order waveplates (ZOWPs) are crucial for polarization measurements and the laser industry. In this work, two deep-ultraviolet (DUV) optical crystals, NaMPO (M = K, Rb), were synthesized successfully by introducing alkali metals and isolated [PO] groups with the low polarizability. Comprehensive characterization reveals that NaMPO (M = K, Rb) feature DUV cutoff edges (<200 nm) and tiny birefringence (0.

Observation of Bloch Flatbands and Localized States in Moiré Bilayer Grating.

Here, we explore the formation of Bloch flatbands in photonic moiré bilayer grating. The stacking-induced interlayer coupling contrast serves as a crucial condition for flatband formation. The number of Bloch flatbands is related to the number of antinodes present within one unitcell of monolayer grating.