Guosheng Zhou

Direct seawater oxygen evolution reaction (OER) is critically hampered by chloride‐induced competitive oxidation, corrosion, and active‐site poisoning, driving the urgent need for highly active and chlorine‐tolerant electrocatalysts. Herein, a surface‐engineered electrocatalyst comprising osmium nanoparticles (Os NPs) anchored onto CoFe layered double hydroxide (Os/CoFe LDH) was prepared. X‐ray photoelectron spectroscopy revealed that the incorporated Os NPs stabilized high‐valence Co/Fe species, which preferentially promote OH ⁻ adsorption over Cl ⁻ and function as the genuine active centers for OER. Furthermore, in situ Raman spectroscopy demonstrates that Os NPs anchoring modulates the interfacial water structure, thereby enhancing water adsorption and facilitating seawater OER kinetics. The optimized Os/CoFe LDH‐40 achieves an overpotential of only 244 mV at 10 mA cm ⁻² in simulated alkaline seawater and operates stably for over 300 h in an anion exchange membrane electrolyzer at 300 mA cm ⁻² . This work not only develops a high‐performance catalyst for alkaline seawater OER but also offers new perspectives for advancing osmium‐based materials in electrocatalysis.

This review systematically explores strategies to enhance product selectivity in PEC CO ₂ RR, and further analyzes recent advances in C ₁ /C ₂ product synthesis, challenges in selectivity control, and future directions.

Heusler alloys have gradually attracted extensive research interests in the electrochemical hydrogen evolution reaction (HER) due to their unique structural features. However, the inherent half‐metallic characteristics of them impede their application. Therefore, reasonable tuning the electronic structure of Heusler alloy catalysts is crucial for enhancing their catalytic activity. Here, we modulated the Fe₂MnSi Heusler alloy by precisely substituting Mn with Ru using arc melting and prepared Fe₂Mn_xRu_1‐xSi materials with enhanced HER properties. The incorporation of highly electronegative Ru introduces substantial electronegativity gradients among the metals, prompting a pronounced Ru‐induced electron enrichment effect that facilitates significant charge redistribution. This electronic modulation enhances conductivity and fine‐tunes the d‐band center, ultimately optimizing the hydrogen adsorption energy barrier at the Si active site. As a result, the overpotential at a current density of 10 mA cm⁻² is significantly reduced from 525 mV to 19 mV under acidic conditions. This work provides insights into the design of highly efficient HER electrocatalysts and expands the potential applications of Heusler alloys in electrocatalysis.

The photoconversion of CO ₂ into valuable chemical products using solar energy is a promising strategy to address both energy and environmental challenges. However, the strongly adsorbed CO ₂ frequently impedes the seamless advancement of the subsequent reaction by significantly increasing the reaction activation energy. Here, we present a BiFeO ₃ material with lattice strain that collaboratively regulates the d/p‐2π* orbitals hybridization between metal sites and *CO ₂ as well as *COOH intermediates to achieve rapid conversion of solidly adsorbed CO ₂ to critical *COOH intermediates, accelerating the overall CO ₂ reduction kinetics. Quasi in situ X‐ray photoelectron spectroscopy and in situ Fourier Transform infrared spectroscopy combined with theoretical calculation reveals that the optimized Fe sites enhance the adsorption and activation effect of CO ₂ , and continuous internal electrons are rapidly transferred to the reaction sites and injected into the surface *CO ₂ and *COOH under the condition of illumination, which promotes the rapid formation and stability of *COOH. Certainly, the performance of CO ₂ photoreduction to CO is improved by 12.81‐fold compared with the base material. This work offers a new perspective for the rapid photoreduction process of strongly adsorbed CO ₂ .

The photoconversion of CO ₂ into valuable chemical products using solar energy is a promising strategy to address both energy and environmental challenges. However, the strongly adsorbed CO ₂ frequently impedes the seamless advancement of the subsequent reaction by significantly increasing the reaction activation energy. Here, we present a BiFeO ₃ material with lattice strain that collaboratively regulates the d/p‐2π* orbitals hybridization between metal sites and *CO ₂ as well as *COOH intermediates to achieve rapid conversion of solidly adsorbed CO ₂ to critical *COOH intermediates, accelerating the overall CO ₂ reduction kinetics. Quasi in situ X‐ray photoelectron spectroscopy and in situ Fourier Transform infrared spectroscopy combined with theoretical calculation reveals that the optimized Fe sites enhance the adsorption and activation effect of CO ₂ , and continuous internal electrons are rapidly transferred to the reaction sites and injected into the surface *CO ₂ and *COOH under the condition of illumination, which promotes the rapid formation and stability of *COOH. Certainly, the performance of CO ₂ photoreduction to CO is improved by 12.81‐fold compared with the base material. This work offers a new perspective for the rapid photoreduction process of strongly adsorbed CO ₂ .