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Reaction kinetics can be improved by the enhanced electrical contact between different components growing symbiotically. But so far, due to the necessity for material synthesis conditions match, the component structures of cooperative growth are similar, and the materials are of the same type. The collaborative growth of high‐reaction kinetics composite homogeneous core–shell heterostructure between...
Decorating platinum (Pt) with a single atom offers a promising approach to tailoring their catalytic activity. In this study, for the first time, an innovative assistive active sites (AAS) strategy is proposed to construct high–loading (3.46wt.%) single Fe─N4 as AAS, which are further hybridized with small Pt nanoparticles to enhance both oxygen reduction reaction (ORR) and methanol oxidation reaction...
Sodium‐ion batteries (SIBs) have gradually become one of the most promising energy storage techniques in the current era of post‐lithium‐ion batteries. For anodes, transitional metal selenides (TMSe) based materials are welcomed choices , owing to relatively higher specific capacities and enriched redox active sites. Nevertheless, current bottlenecks are blamed for their poor intrinsic electronic...
It is challenging yet promising to design highly accessible N‐doped carbon skeletons to fully expose the active sites inside single‐atom catalysts. Herein, mesoporous N‐doped carbon hollow spheres with regulatable through‐pore size can be formulated by a simple sequential synthesis procedure, in which the condensed SiO2 is acted as removable dual‐templates to produce both hollow interiors and through‐pores,...
2D MXene‐Ti3C2Tx holds great promise in various electronic applications, especially for electromagnetic interference (EMI) shielding devices and supercapacitors. Ti3C2Tx synthesis typically involves the use of hazardous fluorine‐containing chemicals that can result in the formation of inert fluoride functional groups on the surface of Ti3C2Tx, severely degrading its properties and posing a threat...
Rational design and development of highly efficient hydrogen evolution reaction (HER) electrocatalysts is of great significance for the development of green water electrolysis hydrogen production technology. Ru‐engineered 1D PtCo‐Ptrich nanowires (Ru‐PtrichCo NWs) are fabricated by a facile electrodeposition method. The rich Pt surface on 1D Pt3Co contributes to the fully exposed active sites and...
Intracellular bacterial pathogens hiding in host cells tolerate the innate immune system and high‐dose antibiotics, resulting in recurrent infections that are difficult to treat. Herein, a homing missile‐like nanotherapeutic (FeSAs@Sa.M) composed of a single‐atom iron nanozyme (FeSAs) core coated with infected macrophage membrane (Sa.M) is developed for in situ elimination of intracellular methicillin‐resistant...
Cell‐Free Therapies
hBMMSC‐apoVs can promote mesenchymal stem cell (MSC) osteogenesis and inhibit osteoclast formation in vitro and in vivo. The mechanisms include the release of miR1324, which inhibits the expression of the target gene SNX14, thereby activating the SMAD1/5 pathway in target cells. In article number 2205813, Xiao Zhang, Yunsong Liu, and co‐workers suggest a therapeutic strategy for...
Mesenchymal stem cells (MSCs) are widely used in the treatment of diseases. After their in vivo application, MSCs undergo apoptosis and release apoptotic vesicles (apoVs). This study investigates the role of apoVs derived from human bone marrow mesenchymal stem cells (hBMMSCs) in bone metabolism and the molecular mechanism of the observed effects. The results show that apoVs can promote osteogenesis...
Multi‐nanozymes are widely applied in disease treatment, biosensing, and other fields. However, most current multi‐nanozyme systems exhibit only moderate activity since reaction microenvironments of different nanozyme are often distinct or even incompatible. Conventional assemble strategies are inapplicable for designing multi‐nanozymes consisting of incompatible nanozymes. Herein, a versatile fiber‐based...
Single‐atom catalysts (SACs) have attracted tremendous research interest due to their unique atomic structure, maximized atom utilization, and remarkable catalytic performance. Among the SACs, the carbon‐supported SACs have been widely investigated due to their easily controlled properties of the carbon substrates, such as the tunable morphologies, ordered porosity, and abundant anchoring sites. The...
Small extracellular vesicles (sEVs) secreted by mesenchymal stem cells (MSCs) have been extensively studied in recent years. sEV contents change with the secreting cell state. When MSCs are exposed to an inflammatory environment, they release more functional growth factors, exosomes, and chemokines. Herein, MSCs are stimulated to alter sEV cargos and functions to regulate the inflammatory microenvironment...
Although organosulfur compounds can protect lithium anodes, participate in the redox reaction, and suppress the shuttle effect, the sluggish electrochemical dynamics of their bulk structure and the notorious shuttle effect of covalent long‐chain sulfurs largely impede their actual applications. Herein, sulfurized carbon nanotube@aminophenol‐formaldehyde (SC@A) with covalently linked short‐chain sulfurs...
The increasing resistance risks of conventional antibiotic abuse and the formed biofilm on the surface of wounds have been demonstrated to be the main problems for bacteria‐caused infections and unsuccessful wound healing. Treatment by reactive oxygen species, such as the commercial H2O2, is a feasible way to solve those problems, but limits in its lower efficiency. Herein, an ionic covalent‐organic...
In article number 2101151, Hao Liu, Feng Xu, and co‐workers have developed an ionically conductive organohydrogel based soft electronic device that demonstrates excellent performances at freezing and elevated temperatures as well as in underwater conditions. The ionically conductive organohydrogel‐based electronics can be adhered on the robotic hand for grasping detection at extreme temperatures,...
Hydrogel‐based electronics have found widespread applications in soft sensing and health monitoring because of their remarkable biocompatibility and mechanical features similar to human skin. However, they are subjected to potential challenges like structural failure, functional degradation, and device delamination in practical applications, especially facing extreme environmental conditions (e.g...
2D MXene‐based nanomaterials have attracted tremendous attention because of their unique physical/chemical properties and wide range of applications in energy storage, catalysis, electronics, optoelectronics, and photonics. However, MXenes and their derivatives have many inherent limitations in terms of energy storage applications. In order to further improve their performance for practical application,...
The development of high‐energy‐density Li metal batteries are hindered by electrolyte consumption and uneven lithium deposition due to the unstable lithium‐electrolyte interface (SEI). In this work, tetraglyme is introduced into ester electrolyte to regulate the Li+‐solvation structures for stable SEI while remaining appropriate voltage window for high‐voltage cathodes. In the modified solvation structures,...
In article number 1905311, Jun Yang, Yongyao Xia, and co‐workers design an O3‐type layered Ni‐rich oxide cathode through an electrochemical Li+/Na+ exchange strategy. Benefiting from its high‐active and open layered framework for fast ion transport, the Na‐intercalated cathode demonstrates a high reversible capacity and superior rate capability, which has potential applications in the field of large‐scale...
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