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The electronic states of metal catalysts can be redistributed by the rectifying contact between metal and semiconductor e.g., N‐doped carbon (NC), while the interfacial regulation degree is very limited. Herein, a deep electronic state regulation is achieved by constructing a novel double‐heterojunctional Co/Co3O4@NC catalyst containing Co/Co3O4 and Co3O4/NC heterojunctions. When used for dilute electrochemical...
Artificial optoelectronic synapses (OES) have attracted extensive attention in brain‐inspired information processing and neuromorphic computing. However, OES at near‐infrared wavelengths have rarely been reported, seriously limiting the application in modern optical communication. Herein, high‐performance near‐infrared OES devices based on VO2/MoO3 heterojunctions are presented. The textured MoO3...
Nanoparticles composed of high‐entropy alloys (HEA NPs) exhibit remarkable performance in electrocatalytic processes such as hydrogen evolution and oxidations. In this study, two types of quinary HEA NPs of PtRhPdIrRu, are synthesized, featuring disordered and crystallized nanostructures, both with and without a boiling mixture. The disordered HEA NPs (d‐HEA NPs) with a size of 3.5 nm is synthesized...
LiMn1‐yFeyPO4 (LMFP) is a significant and cost‐effective cathode material for Li‐ion batteries, with a higher working voltage than LiFePO4 (LFP) and improved safety features compared to layered oxide cathodes. However, its commercial application faces challenges due to a need for a synthesis process to overcome the low Li‐ion diffusion kinetics and complex phase transitions. Herein, a solid‐state...
Lithium‐Ion Batteries
In article number 2309629, Yingqiang Wu, Li Wang, Fengli Bei, Xiangming He, and co‐workers present a LiMnxFe1‐xPO4 solid‐state synthesis method using LiFePO4 and nano LiMn0.7Fe0.3PO4 that coexist at room temperature, happen at low sintered temperatures (300–600 °C) and complete at high sintered temperatures (700∼800 °C). Following sintering at high temperatures, LiMnxFe1‐xPO4...
The shuttle effect limits the practical application of lithium‐sulfur (Li‐S) batteries with high specific capacity and cheap price. Herein, a three‐dimensional carbon substrate containing Ni3S2 nanoparticles is created to modify the separator. The in situ optical visualization battery proves that the material can realize the rapid conversion of Li2S6. Moreover, the impact of lithium‐ion diffusion...
Nano Cell Cycle Checkpoint Inhibitors
In article number 2300736, Daishun Ling, Fangyuan Li, and co‐workers demonstrate that ultra‐small iron oxide nanoparticles (IONPs) can serve as a selective nano cell cycle checkpoint inhibitor (NCCI) to catalyze the intracellular H2O2 into abundant ·OH, cleave heat shock protein 90 (Hsp90), and thus induce the degradation of the client protein ATR/CHK1, leading...
Cell cycle checkpoint activation promotes DNA damage repair, which is highly associated with the chemoresistance of various cancers including acute myeloid leukemia (AML). Selective cell cycle checkpoint inhibitors are strongly demanded to overcome chemoresistance, but remain unexplored. A selective nano cell cycle checkpoint inhibitor (NCCI: citric acid capped ultra‐small iron oxide nanoparticles)...
Effective photocatalytic carbon dioxide (CO2) reduction into high‐value‐added chemicals is promising to mitigate current energy crisis and global warming issues. Finding effective photocatalysts is crucial for photocatalytic CO2 reduction. Currently, metal‐based semiconductors for photocatalytic CO2 reduction have been well reviewed, while review of nonmetal‐based semiconductors is almost limited...
Anti‐Infection Therapies
In article number 2205471, Jianqing Gao, Fangyuan Li, Daishun Ling, and co‐workers report a silver‐based enzymatic nanoadjuvant (EnzNA) by self‐assembling silver nanoclusters that can modulate intracellular and extracellular infectious microenvironments with pH discrepancy to overcome antimicrobial resistance of pathogens. The EnzNA‐mediated modulation of the infectious microenvironment...
The emergence and evolution of antimicrobial resistance (AMR) pose a significant challenge to the current arsenal to fight infection. Antibiotic adjuvants represent an appealing tactic for tackling the AMR of pathogens, however, their practical applications are greatly constrained by the harsh infectious microenvironment. Herein, it is found that silver nanoclusters (Ag NCs) can possess tunable enzymatic...
Nanozymes exhibiting antioxidant activity are beneficial for the treatment of oxidative stress‐associated diseases. Ruthenium nanoparticles (RuNPs) with multiple enzyme‐like activities have attracted growing attention, but the relatively low antioxidant enzyme‐like activities hinder their practical biomedical applications. Here, a size regulation strategy is presented to significantly boost the antioxidant...
Near‐field radiative heat transfer (NFRHT) can exceed the blackbody radiation limit owing to the coupled evanescent waves, implying a significant potential for energy conversion and thermal management. Coupled surface plasmon polaritons (SPPs) and hyperbolic phonon polaritons (HPPs) with small ohmic losses enable a long propagation wavelength that is essential in NFRHT. However, so far, there still...
Radiative Heat Transfer
In article number 2108032, Jinlin Song, Zixue Luo, Qiang Cheng, and co‐workers measure the near‐field radiative heat transfer between graphene/hexagonal boron nitride systems, where the coupling of hyperbolic phonon polaritons and surface plasmon polaritons is examined. The largest ever radiative heat flux is achieved for a gap space of ≈400 nm, which is six times higher than...
Constructing solid‐state lithium–oxygen batteries (SSLOBs) holds a great promise to solve the safety and stability bottlenecks faced by lithium–oxygen batteries (LOBs) with volatile and flammable organic liquid electrolytes. However, the realization of high‐performance SSLOBs is full of challenges due to the poor ionic conductivity of solid electrolytes, large interfacial resistance, and limited reaction...
Suitable anode materials with high capacity and long cycling stability, especially capability at high current densities, are urgently needed to advance the development of potassium ion batteries (PIBs) and sodium ion batteries (SIBs). Herein, a porous Ni‐doped FeSe2/Fe3Se4 heterojunction encapsulated in Se‐doped carbon (NF11S/C) is designed through selenization of MOFs precursor. The porous composite...
Drug Resistant Bacteria Treatment
In article number 2106936, Yuanhong Xu, Jing Sun, and co‐workers present how antimicrobial peptides mimetic copolypeptoids with optimized amphiphilic balance show excellent in vitro and in vivo antimicrobial property and high selectivity without inducing drug resistance. The polypeptoids also possess potent antibiofilm activity, inherently fast bactericidal property...
The preparation of a type of innovative cationic copolypeptoid antimicrobials containing various hydrophobic moieties that resemble both structure and membrane‐lytic antibacterial mechanism of natural antimicrobial peptides (AMPs) is reported. By finely tuning the hydrophilic/hydrophobic balance, the polypeptoids exhibit a wide spectrum of antibacterial activity against both Gram‐positive bacteria...
A flexible fiber acoustic transducer is created by designing a parallel configuration of a Rubidium iron boron (NdFeB) magnet fiber and an aluminum fiber. The former provides a stable magnet field, while the latter vibrates to phonate upon applying alternating current or generates alternating voltage in the sound field. This single device exhibits dual functions as a loudspeaker or a microphone. As...
Gold nanoparticles (AuNPs) pose a great challenge in the development of nanotracers that can self‐adaptively alter their properties in response to certain cellular environments for long‐term stem cell tracking. Herein, pH‐sensitive Au nanotracers (CPP‐PSD@Au) are fabricated by sequential coupling of AuNPs with sulfonamide‐based polymer (PSD) and cell‐penetrating peptide (CPP), which can be efficiently...
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