Jiamusi

The development of highly active, cost-effective, and durable electrocatalysts is critical for efficient water splitting. Layered double hydroxides (LDHs), with their excellent conductivity, large surface area, and three-dimensional (3D) open framework facilitating mass transport and active site accessibility, are ideal candidates. In this work, a ternary nickel‑cobalt‑iron LDH (NiCoFe-LDH) is synthesized via metal ion etching, leveraging synergistic intermetallic electronic interactions to enhance electrocatalytic performance. The as-prepared NiCoFe-LDH exhibits outstanding electrocatalytic performance under alkaline conditions, achieving low overpotentials of 79.60 ± 0.50 mV for the hydrogen evolution reaction (HER) and 373.40 ± 0.50 mV for the oxygen evolution reaction (OER) at 10 mA cm^-2, along with Tafel slopes of 149.61 ± 0.50 and 77.84 ± 0.50 mV dec^-1, respectively. It also demonstrates exceptional stability, with negligible performance degradation after 72 h of rigorous testing. For overall water splitting, NiCoFe-LDH requires only 1.56 ± 0.1 V to deliver 10 mA cm^-2, highlighting its potential for efficient hydrogen production. The incorporation of Fe into NiCo-LDH induces significant electronic structure modifications, including electron delocalization and an upshift in the d-band center, while simultaneously modulating the spin states of Ni/Co ions. These synergistic effects collectively enhance both electrical conductivity and intermediate adsorption capacity. This work highlights cation exchange as an effective strategy for tailoring the electronic properties of layered hydroxides, demonstrating its potential for optimizing material performance in electrocatalysis applications.

Viral particles and proteins released during infection profoundly reshape the cellular microenvironment by disrupting host signaling, triggering inflammation, and modulating immune responses. Glucose metabolism, a critical hub for energy production and biosynthesis, is highly susceptible to viral reprogramming. This review summarizes recent findings showing that diverse viruses, including influenza virus, Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), and enteroviruses, manipulate glucose metabolic pathways to promote replication and evade immune surveillance. Specifically, viruses modulate glycolytic flux, alter the activity of key metabolic enzymes such as hexokinase (HK) and pyruvate kinase, and interfere with signaling networks like PI3K/Akt/mTOR and AMPK. These metabolic alterations further impact the immune landscape by regulating cytokine production, immune cell activation, and antiviral responses. Our analysis highlights a bidirectional interaction: while viruses hijack host glucose metabolism to favor their survival, metabolic changes also generate host-derived antiviral responses. This review highlights the bidirectional crosstalk between metabolic remodeling and microenvironmental changes during viral infection, underscoring the potential of metabolism-based antiviral strategies. A deeper understanding of these mechanisms may inform the development of more effective and targeted interventions against viral diseases.

To address challenges in heat dissipation and electromagnetic compatibility in miniaturized electronic devices, this study reports the construction of a Ni-NiO heterostructure on fluorinated boron nitride (FBN).Ni-MOF was uniformly coated onto FBN via a solvothermal synthesis process, followed by high-temperature annealing to obtain FBN@Ni-NiO composites.The FBN@Ni-NiO-700 composite achieved exceptional performance, with a min. reflection loss (RL_min) of -67.64 dB at 2.87 mm thickness in the X-band and a maximum effective absorption bandwidth (EAB_max) of 5.78 GHz.The Ni-NiO heterostructure synergistically enhances electromagnetic wave dissipation through magnetic and antiferromagnetic interactions and optimizes impedance matching, yielding broad absorption bandwidth.Also, with its innovative structural design and exceptional electromagnetic loss properties, the FBN@Ni-NiO composite demonstrates remarkable performance advantages, achieving an outstanding maximum RCS reduction of 19.82 dB m².In TC, FBN@Ni-NiO-700/UV-cured resin composites achieved a 537 % increase, from 0.2500 W m^-1 K^-1 to 1.5915 W m^-1 K^-1 at 30 wt% filler content.This pronounced enhancement is ascribed to the formation of continuous and well-ordered thermal conduction pathways facilitated by the synergistic interplay between FBN and the Ni-NiO heterostructure, which significantly improves phonon transport efficiency.Addnl., the Ni-NiO interface effectively reduces phonon scattering between the thermal fillers and the polymer matrix.These results underscore the promising potential of FBN@Ni-NiO composites for applications in 5G communication systems, radar technol., and aerospace engineering.