Regulating Spin Polarization via Axial Nitrogen Traction at Fe-N Sites Enhanced Electrocatalytic CO Reduction for Zn-CO Batteries.

Single Fe sites have been explored as promising catalysts for the CO reduction reaction to value-added CO. Herein, we introduce a novel molten salt synthesis strategy for developing axial nitrogen-coordinated Fe-N sites on ultrathin defect-rich carbon nanosheets, aiming to modulate the reaction pathway precisely. This distinctive architecture weakens the spin polarization at the Fe sites, promoting a dynamic equilibrium of activated intermediates and facilitating the balance between *COOH formation and *CO desorption at the active Fe site.

High-performance seawater oxidation by a homogeneous multimetallic layered double hydroxide electrocatalyst.

SignificanceSeawater is one of the most abundant resources on Earth. Direct electrolysis of seawater is a transformative technology for sustainable hydrogen production without causing freshwater scarcity. However, this technology is severely impeded by a lack of robust and active oxygen evolution reaction (OER) electrocatalysts.

[Determination of bisphenol A in milk by liquid chromatography-tandem mass spectrometry coupled with solid phase extraction of monodisperse magnetic submicron particles as adsorbent].

Monodisperse magnetic submicron particles were synthesized by a solvothermal reduction method. A solid phase extraction (SPE) based on the monodisperse magnetic submicron particles and high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method for the determination of bisphenol A (BPA) at trace level in milk has been established. The important parameters that affect the extraction efficiency such as the solution pH, dosage of magnetic submicron particles, nature of elution solution and its volume were optimized.