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Hydroxyl radical (•OH) with strong oxidation capability is one of the most important reactive oxygen species. The generation of •OH from superoxide radicals (•O2−) is an important process in visible‐light‐driven photocatalysis, but the conversion generally suffers from slow reaction kinetics. Here, a hydrophobicity promoted efficient •OH generation in a visible‐light‐driven semiconductor‐mediated...
The ternary strategy is one of the effective methods to regulate the morphology of the active layer in organic solar cells (OSCs). In this work, the ternary OSCs with bulk heterojunction (BHJ) or layer‐by‐layer (LbL) active layers are prepared by using the polymer donor PM6 and the non‐fullerene acceptor L8‐BO as the main system and the fullerene acceptor PC71BM as the third component. The power conversion...
Although (oxy)hydroxides generated by electrochemical reconstruction (EC‐reconstruction) of transition‐metal catalysts exhibit highly catalytic activities, the amorphous nature fundamentally impedes the electrochemical kinetics due to its poor electrical conductivity. Here, EC‐reconstructed NiFe/NiFeOOH core/shell nanoparticles in highly conductive carbon matrix based on the pulsed laser deposition...
Janus porous biomaterials are gaining increasing attention and there are considerable efforts to develop simple, rapid, and scalable methods capable of tuning micro‐ and macro‐structures. Here, a single‐step electro‐fabrication method to create a Janus porous film by the electrodeposition of the amino‐polysaccharide chitosan is reported. Specifically, a Janus structure emerges spontaneously when electrodeposition...
Biomaterial Electro‐Fabrication
In article number 2204837, Xue Qu, Changsheng Liu and co‐workers report a one‐step electro‐fabrication method at sub‐ambient temperatures that organizes the polysaccharide chitosan over a hierarchy of length scales to form a Janus porous hydrogel structure. This water‐based fabrication method is simple, rapid and scalable, and allows a tuning of micro‐structure (e.g...
Polyphosphate (polyP) is one of the most compact inorganic polyanionic biopolymers that participates in various physiological processes. However, the development of polyP‐based nanomaterials is still in its infancy. Here, biocompatible polyphosphate‐manganese nanosheets are designed and synthesized by a hierarchical assembly strategy. The thickness and the lateral size of the resulting polyP‐Mn nanosheets...
Irradiation damage is a key issue for the reliability of semiconductor devices under extreme environments. For decades, the ionizing‐irradiation‐induced damage in transistors with silica‐silicon (SiO2‐Si) structures at room temperature has been modeled by a uniform generation of centers in the bulk silica region through the capture of irradiation‐induced holes, and an irreversible conversion from...
Noninvasive bioassays based on the principle of a hydrogen peroxide (H2O2) cathodic reaction are highly desirable for low concentration analyte detection within biofluids since the reaction is immune to interference from oxidizable species. However, the inability to selectively reduce H2O2 over O2 for commonly used stable catalysts (carbon or noble metals) is one of the key factors limiting their...
A high‐quality field emission electron source made of a highly ordered array of carbon nanotubes (CNTs) coated with a thin film of hexagonal boron nitride (h‐BN) is fabricated using a simple and scalable method. This method offers the benefit of reproducibility, as well as the simplicity, safety, and low cost inherent in using B2O3 as the boron precursor. Results measured using h‐BN‐coated CNT arrays...
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