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Anti‐Tumor Immunity
An “ABC” ternary membrane‐derived nanosystem blended from antigen‐presenting mature dendritic cell membranes (“A”), bacterial E. coli cytoplasmic membranes (“B”), and cancer cell membranes (“C”), shows great promise for use as a personalized tumor nanovaccine. ABC nanovaccine elicits immune responses on patient‐derived dendritic cells (DCs) by homologous vaccines and promotes recovery...
The use of orally‐administered therapeutic proteins for treatment of inflammatory bowel disease (IBD) has been limited due to the harsh gastrointestinal environment and low bioavailability that affects delivery to diseased sites. Here, a nested delivery system, termed Gal‐IL10‐EVs (C/A) that protects interleukin 10 (IL‐10) from degradation in the stomach and enables targeted delivery of IL‐10 to inflammatory...
Cancer vaccines generally are limited by insufficient tumor‐specific cellular immunogenicity. Herein, a potent “ABC” ternary membrane‐derived vaccine system blended from antigen‐presenting mature dendritic cell membranes (“A”), bacterial E. coli cytoplasmic membranes (“B”), and cancer cell membranes (“C”) is developed using a block‐copolymer micelle‐enabled approach. The respective ABC membrane components...
Oxygen evolution reaction (OER) is one of the important half‐reactions in energy conversion equipment such as water‐spitting devices, rechargeable metal‐air batteries, and so on. It is beneficial to develop efficient and low‐cost catalysts that understand the reaction mechanism of OER and analyze the reconstruction phenomenon of transition metal sulfide. Interestingly, copper sulfide and cuprous sulfide...
Heterojunctions coupled into micro‐mesoscopic structures is an attractive strategy to optimize the light harvesting and carrier separation of semiconductor photocatalysts. A self‐templating method of ion exchange is reported to synthesize an exquisite hollow cage‐structured Ag2S@CdS/ZnS that direct Z‐scheme heterojunction photocatalyst. On the ultrathin shell of the cage, Ag2S, CdS, and ZnS with Zn‐vacancies...
Because of the instability and Fenton reactivity of non‐precious metal nitrogen‐carbon based catalyst when processing the oxygen reduction reaction (ORR), seeking for electrocatalysts with highly efficient performance becomes very highly desired to speed up the commercialization of fuel cell. Herein, chromium (Cr)‐N4 electrocatalyst containing extraterrestrial S formed axial S1‐Cr1N4 bonds (S1Cr1...
Electrochemical nitrate reduction to ammonia (NRA) provides an efficient, sustainable approach to convert the nitrate pollutants into value‐added products, which is regarded as a promising alternative to the industrial Haber–Bosch process. Recent studies have shown that oxygen vacancies of oxide catalysts can adjust the adsorption energies of intermediates and affect their catalytic performance. Compared...
Surface strains are necessary to optimize the oxygen adsorption energy during the oxygen reduction reaction (ORR) in the four‐electron process, but the surface strains regulation for ORR in the two‐electron process to produce hydrogen peroxide (H2O2) is rarely studied. Herein, it is reported that the tensile strained B‐doped Ni nanoparticles on carbon support (Ni‐B@BNC) could enhance the adsorption...
Solar‐driven production of hydrogen peroxide (H2O2), as an important industrial chemical oxidant with an extensive range of applications, from oxygen reduction is a sustainable alternative to mainstream anthraquinone oxidation and direct hydrogenation of dioxygen methods. The efficiency of solar to hydrogen peroxide over semiconductor‐based photocatalysts is still largely limited by the narrow light...
Electrochemical sodium‐ion storage has come out as a promising technology for energy storage, where the development of electrode material that affords high volumetric capacity and long‐term cycling stability remains highly desired yet a challenge. Herein, Ti3C2Tx (MXene)‐based films are prepared by using sulfur (S) as the mediator to modulate the surface chemistry and microstructure, generating S‐doped...
The interface between two material phases typically exhibits unique electronic states distinct from their pure phases, thus, providing a very promising channel to construct catalysts with excellent activity and stability. Here, water‐induced formation of Ni2P–Ni12P5 through a one‐step phosphorization of nickel foam (NF) is demonstrated for the first time. The abundant interfaces endow Ni2P–Ni12P5/NF...
Proteins, like actors, play different roles in specific applications. In the past decade, significant achievements have been made in protein‐engineered biomedicine for cancer therapy. Certain proteins such as human serum albumin, working as carriers for drug/photosensitizer delivery, have entered clinical use due to their long half‐life, biocompatibility, biodegradability, and inherent nonimmunogenicity...
An all‐carbon pressure sensor is designed and fabricated based on reduced graphene oxide (rGO) nanomaterials. By sandwiching one layer of superelastic rGO aerogel between two freestanding high‐conductive rGO thin papers, the sensor works based on the contact resistance at the aerogel–paper interfaces, getting rid of the alien materials such as polymers and metals adopted in traditional sensors. Without...
Although chemoselective hydrogenation of unsaturated aldehydes is the major route to highly valuable industrially demanded unsaturated alcohols, it is still challenging, as the production of saturated aldehydes is more favorable over unsaturated alcohols from the view of thermodynamics. By combining the structural features of porous nanowires (NWs) and metal‐organic frameworks (MOFs), a unique class...
Development of highly active and stable Pt‐free oxygen reduction reaction catalysts from earth‐abundant elements remains a grand challenge for highly demanded metal–air batteries. Ag‐based alloys have many advantages over platinum group catalysts due to their low cost, high stability, and acceptable oxygen reduction reaction (ORR) performance in alkaline solutions. Nevertheless, compared to commercial...
It is critical to detect and analyze the heavy metal pollutions in environments and foods. Chemosensors have been widely investigated for fast detection of analytes such as heavy metals due to their unique advantages. In order to improve the detection sensitivity of chemosensors, recently electrospun nanofibrous membranes (ENMs) have been explored for the immobilization of chemosensors or receptors...
The electrocatalytic activity of Pt‐based alloys exhibits a strong dependence on their electronic structures, but a relationship between electronic structure and oxygen reduction reaction (ORR) activity in Ag‐based alloys is still not clear. Here, a vapor deposition based approach is reported for the preparation of Ag75M25 (M = Cu, Co, Fe, and In) and AgxCu100−x (x = 0, 25, 45, 50, 55, 75, 90, and...
An ingenious strategy is put forward to evaluate accurately the thermoelectric performance of carbon nanotube (CNT) thin films, including thermal conductivity, electrical conductivity, and Seebeck coefficient in the same direction. The results reveal that the as‐prepared CNT interconnected films and CNT fibers possess enormous potential of thermoelectric applications because of their ultrahigh power...
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