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Coupling hollow semiconductor with metal–organic frameworks (MOFs) holds great promise for constructing high‐efficient CO2 photoreduction systems. However, energy band mismatch between them makes it difficult to exert their advantages to maximize the overall photocatalytic efficiency, since that the blockage of desirable interfacial charge transfer gives rise to the enrichment of photoelectrons and...
Ammonia (NH3) is a promising hydrogen (H2) carrier for future carbon‐free energy systems, due to its high hydrogen content and easiness to be liquefied. Inexpensive and efficient catalysts for ammonia electro‐oxidation reaction (AOR) are desired in whole ammonia‐based energy systems. In this work, ultrasmall delafossite (CuFeO2) polyhedrons with exposed high‐index facets are prepared by a one‐step...
Because of its high specific capacity, the silicon–graphite composite (SGC) is regarded as a promising anode for new‐generation lithium‐ion batteries. However, the frequently employed two‐section preparation process, including the modification of silicon seed and followed mixture with graphite, cannot ensure the uniform dispersion of silicon in the graphite matrix, resulting in a stress concentration...
Exploiting clean energy is essential for sustainable development and sunlight‐driven photocatalytic water splitting represents one of the most promising approaches toward this goal. Metal‐organic frameworks (MOFs) are competent photocatalysts owing to their tailorable functionality, well‐defined structure, and high porosity. Yet, the introduction of the unambiguous metal‐centered active site into...
Paracrine is an important mechanism in mesenchymal stem cells (MSCs) that promotes tissue regeneration. However, anoikis is attributed to unsuitable adhesion microenvironment hindered this paracrine effect. In this study, a living and injectable porous hydrogel microsphere with long‐term paracrine activity is constructed via the freeze‐drying microfluidic technology and the incorporation of platelet‐derived...
All‐inorganic lead halide perovskite nanocrystals (NCs) emerge as a rising star in photovoltaic fields on account of their excellent optoelectronic properties. However, it still remains challenging to further promote photovoltaic efficiency due to the susceptible surface and inevitable vacancies. Here, this work reports a 3D/2D core/shell perovskite heterojunction based on CsPbI3 NCs and its performance...
Carbon‐based quantum dots (QDs) have emerged as a fascinating class of advanced materials with a unique combination of optoelectronic, biocompatible, and catalytic characteristics, apt for a plethora of applications ranging from electronic to photoelectrochemical devices. Recent research works have established carbon‐based QDs for those frontline applications through improvements in materials design,...
Chirality transfer is of vital importance that dominates the structure and functionality of biological systems and living matters. External physical stimulations, e.g. polarized light and mechanical forces, can trigger the chirality symmetry breaking, leading to the appearance of the enantiomeric entities created from a chiral self‐assembly of achiral molecule. Here, several 2D assemblies with different...
Multi‐Layered PtAu Nanoframes
In article number 2206377, Insub Jung, Sungho Park, and co‐workers present the rationale design of multi‐layered PtAu nanoframes via multiple synthetic pathways for plasmon‐enhanced electrocatalytic activity. Plasmonic hot spots formed between the inner and outer frames promote light‐induced electrocatalytic enhancement toward the methanol oxidation reaction. Notably,...
Kinetic Controlled Chirality Transfer and Induction
Two‐dimensional hydrogen‐bonding assemblies with different chirality, e.g. achiral, homochiral and racemic, are synthesized on Au(111) surface by using achiral glycylglycine, one of the simplest polypeptides, as the building blocks. Chirality induction and related symmetry broken in assemblies are introduced by the handedness of the assembled motifs...
Low‐Dose NIR‐II Preclinical Bioimaging
Liposome‐cyanine dyes with enhanced brightness are fabricated by restricting the dyes into the hydrophobic pockets of lipids, enabling low‐dose and NIR‐II dual‐color in vivo imaging. Moreover, uniform biocompatible probes with high brightness are obtained on a large scale according to this strategy, enabling image‐guided tumor surgery in rabbit models and facilitating...
Electromyogram‐Based Lip‐Reading Systems
In article number 2205058, Petar M. Djurić, Shanshan Yao, and co‐workers present the design of a truly natural and robust electromyogram‐based lip‐reading system that can capture speech‐relevant lip gestures and decode lip movements for speech. The system allows for a mechanically imperceptible, skin‐friendly, visually unobtrusive platform for tracking and...
Janus particles are a kind of materials with asymmetric morphology or surface chemical environment. But so far, the preparation of particles with dual asymmetry is still a challenging problem. Hence the cation surfactant hexadecyl trimethyl ammonium bromide and co‐surfactant octadecylamine are applied to improve the Pickering emulsion stability, and the micron‐sized silica particles are arranged in...
Narrow Directed Black‐Phosphorus Nanoribbons
The preparation of high‐quality narrow black phosphorus nanoribbons (PNRs) aligned along the same direction is very challenging. In article number 2207538, Changxin Chen and co‐workers develop a reformative mechanical exfoliation approach combining tape and polydimethylsiloxane (PDMS) exfoliations to fabricate high‐quality, narrow and directed PNRs with...
Prostate cancer is the most commonly diagnosed tumor disease in men, and its treatment is still a big challenge in standard oncology therapy. Magnetically actuated microrobots represent the most promising technology in modern nanomedicine, offering the advantage of wireless guidance, effective cell penetration, and non‐invasive actuation. Here, new biodegradable magnetically actuated zinc/cystine‐based...
Bio‐Inspired Soft‐Rigid Hybrid Smart Artificial Muscle
In article number 2206342, Hongmiao Tian and co‐workers propose a soft‐rigid hybrid smart artificial muscle (SRH‐SAM), which ingeniously coordinates the actuation, load‐bearing, and sensory systems. Based on the SRH‐SAM, an advanced approach for a reconfigurable blazed grating plane and a new strategy for controllable attachment/detachment transformation...
hBN‐Encapsulated MoTe2
In article number 2205224, Gwan‐Hyoung Lee and co‐workers investigate phase transition in a laser‐irradiated MoTe2 with various stacked geometries. Depending on the passivation and temperature of the laser‐irradiated sample, 2H‐MoTe2 transforms into various phases, such as Td, 1T′, Mo3Te4, and Te. In the hBN‐encapsulated MoTe2, 2H‐1T′ heterophase can be patterned by local laser‐irradiation,...
Carbon Dot‐Based Hydrogels
The features of article number 2207048 by Xiaofeng Sun, Jin Zhou, Hongguang Li, and co‐workers include i) preparations of carbon dot (CD)‐based hydrogels, including CDs/polymers, CDs/low molecular weight gelators, CDs/graphene oxide, CDs/metal ions and derivatives of CD‐based hydrogels, ii) properties of CD‐based hydrogels, such as fluorescence, mechanical strength enhancement,...
Electronic textiles (e‐textiles) hold great promise for serving as next‐generation wearable electronics owing to their inherent flexible, air‐permeable, and lightweight characteristics. However, these e‐textiles are of limited performance mainly because of lacking powerful materials combination. Herein, a versatile e‐textile through a simple, high‐efficiency mixed‐dimensional assembly of 2D MXene...
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