Beijing University of Chemical Technology

Gas-Film Lubrication, Leakage, and Secondary-Face Friction of a High-Speed Floating Ring Seal under Transient Operating Conditions

Gas-film floating ring seals are widely used in high-speed turbomachinery, where the establishment and decay of the gas film during transient operation strongly affect leakage performance, secondary-face friction, and rotor–ring contact risk. In this study, a transient tribologic...

A DeepMD-GNN Potential Reveals the Initiation Mechanism of a Trinitromethyl-Based Green Primary Explosive

Trinitromethyl-based green explosives have garnered extensive research interest by virtue of their high mass density, superior energy density, favorable oxygen balance, and eco-friendly properties. However, the development of new energetic materials remains challenging because ex...

Coupled Electrolysis for Energy Efficient CO2 Reduction to Formic Acid Enabled by Reconstruction of Indium-Based Catalysts

Abstract Electrochemical CO2 reduction to formate represents a promising avenue for closing the anthropogenic carbon cycle, yet the structural reconstruction of selective indium-based catalysts under operating conditions poses challenges for identifying active sites and elucidati...

Biosynthesis of vanillin glucoside in Escherichia coli

Vanillin is a widely used flavor compound in the food, cosmetic, and pharmaceutical industries. Although microbial biosynthesis offers a green alternative to conventional chemical synthesis, challenges such as unstable heterologous enzyme expression, insufficient methyl donor sup...

Ultrafast 4‐Azidopyridinium‐Based Staudinger (UApS) Ligation for Bioorthogonal Labeling and Imaging

ABSTRACT Fast click reactions that operate efficiently in aqueous buffers are highly desirable across many areas of chemistry, yet remain scarce. Herein, we report an u ltrafast 4‐ a zido p yridinium‐based S taudinger (UApS) ligation that proceeds with large bimolecular reaction...

Pseudo-Core/Shell Latex Particles Constructed via Soft/Hard Segment Phase Separation for High-Performance Si/C Anodes

Abstract Silicon-based anodes in lithium-ion batteries (LIBs) currently suffer from structural collapse and capacity decay caused by drastic volume expansion in silicon particles. To address this issue, a binder that exhibits strong interfacial interactions and suitable mechanica...

Synergistic Adsorption‐Catalytic Effect Based on Hierarchical Porous Structure and Lewis Acidic Cu + Sites in Cu 2 O@MXene for Boosting the Performance of RT Na–S Batteries

ABSTRACT Room‐temperature sodium–sulfur (RT Na–S) batteries offer high energy density and low cost but suffer from poor conductivity, sluggish redox kinetics, and polysulfide shuttling. This study introduces a multifunctional Cu 2 O@MXene separator with a hierarchical porous stru...

Structural and functional insights into QueC-family protein in QatABCD anti-phage system

Abstract QatABCD is a widespread prokaryotic anti-phage defense system comprising four protein components, out of which QatC, a QueC-family protein is the signature component. QueC family proteins are nucleoside biosynthesis enzymes involved in the biosynthesis of queuosine, a 7-...

Overcoming polarization-breakdown trade-off via hydrogen bonding-modulated molecular stacking in high-temperature high-energy-density flexible dielectric

Flexible dielectrics suffer from an inherent polarization-breakdown trade-off. Herein, we propose a hydrogen bonding-modulated molecular stacking strategy to improve high-temperature capacitive energy storage performance. A series of polyetherimide copolymers with tunable hydroge...

Pyridine Functionalization: A Facile Route to Recycled Biobased Itaconate Elastomer/Lignin Composites with Superior Mechanical and Damping Performance

Abstract A massive global annual demand exists for elastomers applied in tires, seals, and shock absorbers. Against the backdrop of sustainable development, next-generation damping elastomers are expected to integrate multiple functionalities, notably high biobased content and re...

Reshaping Chloride Exclusion in Stern Layer to Enable Durable Seawater Electrolysis

ABSTRACT Direct seawater electrolysis offers a promising route for green hydrogen by utilizing marine resources and offshore renewables, but is hindered by chloride‐induced corrosion and poor catalyst durability. Herein, the Helmholtz plane microenvironment is reshaped by in situ...

Carbon dots as a smart nanoplatform for the blood‐brain barrier penetration and ischemic stroke therapy

Abstract Ischemic stroke (IS) is one of the primary causes of global mortality and permanent neurological disability, and its clinical treatment is severely constrained by the intricate ischemic pathological cascade and the impermeable blood‐brain barrier (BBB). Cerebral ischemia...

Disentangling Elemental Roles in an Amorphous Medium‐Entropy Electrocatalyst for Oxygen Evolution

ABSTRACT Understanding elemental cooperation in high/medium‐entropy electrocatalysts is essential for rational design but remains challenging due to their compositional complexity. Herein, an amorphous medium‐entropy catalyst, FeCoNiMo‐a, with a nanoring architecture, is develope...

Improving Durability of Silicone Rubber Dielectric Elastomer Composite by Constructing Covalent‐Bonds Between the Surface‐Modified Silica and Matrix

ABSTRACT The inherent viscoelastic behaviors of dielectric elastomers (DEs), such as creep and hysteresis, are important for their long‐term service stability and energy efficiency in cyclic applications. In this work, a constrained interface between dielectric filler and silicon...

Superior Leaf Deposition and Subsequent Uptake: Nanocarrier Boosts Cyproflanilide for Enhanced Pest Control

Abstract Chemical pesticides remain indispensable for crop protection, but inefficient delivery and overapplication lead to resistance and environmental risks. Cyproflanilide is a novel meta-diamide insecticide active against a broad range of agricultural pests. Here, we develope...

Design and mechanistic study of hollow SiO 2 ‐based porous liquids for catalytic CO 2 cycloaddition

Abstract Porous liquids (PLs) are novel materials with permanent pores, showing promise for gas capture and catalysis. Hollow SiO 2 (HS) is commonly used to construct Type I PLs due to its well‐defined structure and functionalizable surface. Here, ionic liquids IL1–5 with catalyt...

Covalent organic frameworks for oxygen reduction: Coupling electron, proton, and molecular transport with kinetics

Abstract The oxygen reduction reaction (ORR) remains a central kinetic bottleneck in fuel cells. Its performance depends not only on catalyst activity, but also on electron/proton transfer, oxygen transport, and surface reaction kinetics. Because catalytic reactions and mass tran...

MWMOTE-MLLM: A cluster-level difficulty-aware oversampling multimodal large language model framework for imbalanced fault diagnosis of rolling bearings in horizontal reactors

The horizontal reactor serves as a critical piece of equipment in petrochemical production and operates under extreme conditions, including high temperature, high pressure, and strong corrosion. Under such conditions, rolling bearings are prone to faults caused by excessive vibra...

Isomer Effect of Double-Spiro Mechanophores in Polymer Mechanochemistry

Abstract Easy construction of rhodamine spiro rings and diversity of naphthalenediol enable various isomers of the naphthalene-fused double rhodamine structure and provide the possibility to study the structure–performance relationship of double-spiro mechanophores. Herein, we fo...

Spontaneous ChlorineGeneration via Interfacial Oxidationof Chloride by O2 on Acidic Microdroplets

Abstract Reactive chlorine species significantly influence atmospheric chemistry, yet their sources remain inadequately defined. We have discovered a spontaneous formation pathway for substantial molecular chlorine (Cl2) from the oxidation of chloride (Cl–) through interfacial ox...