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Metal organic frameworks (MOFs) are promising as effective electrocatalysts toward oxygen evolution reaction (OER). However, the origin of OER activity for MOF‐based electrocatalysts is still unclear because of their structure reconstruction during electrocatalysis process. Here, a novel MOF (B‐MOF‐Zn‐Co) with spherical superstructure is developed by hydrothermal treatment of zeolitic imidazolate...
Pearlescent materials are of technological importance in a diverse array of industries from cosmetics to premium paints; however, chiral pearlescent materials remain unexplored. Here, chiral pearlescent films with on‐demand iridescence and metallic appearance are simply organized by leveraging vertical pressure to direct the self‐assembly of cellulose nanocrystals. The films are formed with a bilayer...
H2O2‐fueled micromotors are state‐of‐the‐art mobile microreactors in environmental remediation. In this work, a magnetic FeOx@MnO2@SiO2 micromotor with multi‐functions is designed and demonstrated its catalytic performance in H2O2/peroxymonosulfate (PMS) activation for simultaneously sustained motion and organic degradation. Moreover, this work reveals the correlations between catalytic efficiency...
Catalytic Reactions
In article number 2207666, Xiaoguang Duan, Shaobin Wang, and co‐workers report on the application of well‐designated and multifunctional FeOx@MnO2@SiO2 micromotors as mobile microreactors for catalytic water purification. H2O2 is the fuel to generate oxygen bubble for propelling and peroxymonosulfate is the green oxidant to generate free radical species to realize the degradation...
Single‐crystalline cathodes are the most promising candidates for high‐energy‐density lithium‐ion batteries (LIBs). Compared to their polycrystalline counterparts, single‐crystalline cathodes have advantages over liquid‐electrolyte‐based LIBs in terms of cycle life, structural stability, thermal stability, safety, and storage but also have a potential application in solid‐state LIBs. In this review,...
The photoelastic effect has many uses in mechanics today, but it is usually disregarded in flexible materials. Using 2‐phenoxyethyl acrylate as a monomer and 4‐cyano‐4'‐pentylbiphenyl (5CB) as a solvent, a multiple responsive photoelastic organogel (PO) with strong birefringence but low modulus is created. 5CB is a liquid crystal molecule that does not participate in the polymerization process and...
Solar‐to‐Hydrogen Conversion
In article number 2202109, Chao Gu, Shi‐Kui Han, and co‐workers demonstrate an all‐in‐one strategy for the selective‐epitaxial hybridization of unique tripartite semiconducting sulfides, denoted as CuInS2–Cd(In) S–MoS2. The integrated architectures exhibit superior solar‐to‐hydrogen conversion performance due to their enhanced capabilities for solar absorption and charge...
The design and synthesis of advanced semiconductors is crucial for the full utilization of solar energy. Herein, colloidal selective‐epitaxial hybrid of tripartite semiconducting sulfides CuInS2Cd(In)SMoS2 heteronanostructures (HNs) via lateral‐ and vertical‐epitaxial growths, followed by cation exchange reactions, are reported. The lateral‐epitaxial CuInS2 and Cd(In)S enable effective visible to...
Magnetic photonic crystals (PCs) possess attractive magnetic orientation, flexible pattern designability, and abundant angle‐dependent colors, providing immense potential in anticounterfeiting field. However, all‐solid magnetic PCs‐based labels generally suffer from incompatibility with screen printing techniques, and inferior environmental endurance and mechanical properties. Herein, by developing...
In this work, a LaB6‐alloying strategy is reported to effectively boost the figure‐of‐merit (ZT) of Ge0.92Bi0.08Te‐based alloys up to ≈2.2 at 723 K, attributed to a synergy of La‐dopant induced band structuring and structural manipulation. Density‐function‐theory calculations reveal that La dopant enlarges the bandgap and converges the energy offset between the sub‐valence bands in cubic‐structured...
2D van der Waals (vdW) semiconductors hold great potentials for more‐than‐Moore field‐effect transistors (FETs), and the efficient utilization of their theoretical performance requires compatible high‐k dielectrics to guarantee the high gate coupling efficiency. The deposition of traditional high‐k dielectric oxide films on 2D materials usually generates interface concerns, thereby causing the carrier...
Designing highly efficient and durable electrocatalysts that accelerate sluggish oxygen reduction reaction kinetics for fuel cells and metal–air batteries are highly desirable but challenging. Herein, a facile yet robust strategy is reported to rationally design single iron active centers synergized with local S atoms in metal–organic frameworks derived from hierarchically porous carbon nanorods (Fe/N,S‐HC)...
Mn alloying in thermoelectrics is a long‐standing strategy for enhancing their figure‐of‐merit through optimizing electronic transport properties by band convergence, valley perturbation, or spin‐orbital coupling. By contrast, mechanisms by which Mn contributes to suppressing thermal transports, namely thermal conductivity, is still ambiguous. A few precedent studies indicate that Mn introduces a...
Nanocatalytic tumor therapy is an emerging antitumor option that employs catalytically‐active inorganic nanostructures to produce tumor‐damaging reactive oxygen species. However, initiation of nanocatalytic reactions in the tumor intracellular environment is a challenge due to the reliance on acidic pH. By exploiting the pH‐selective multifaceted catalytic activities of Prussian blue‐based nanomaterials...
Aqueous rechargeable zinc‐based batteries have sparked a lot of enthusiasm in the energy storage field recently due to their inherent safety, low cost, and environmental friendliness. Although remarkable progress has been made in the exploration of performance so far, there are still many challenges such as low working voltage and dissolution of electrode materials at the material and system level...
In article number 1804171, Xiang Yang Liu and co‐workers investigate the self‐collimation effect on fluorescence emission, and the design of a silk fluorescence collimator is applied to a humidity sensor and dye‐sensitized solar cells. This method of complete control of fluorescence emission by introducing mesoscopic ordered structures and its potential applications may significantly broaden the utility...
This work examines the self‐collimation effect of silk materials on fluorescence emission/detection. A macroscopic regulation strategy, coupled with meso‐reconstruction and meso‐functionalization, is adopted to amplify the fluorescence emission of organic fluorescent dyes (i.e., Rhodamine 6G (R6G)) using silk photonic crystal (PC) films. The fluorescence emission can be linearly enhanced or inhibited...
High‐energy storage devices are in demand for the rapid development of modern society. Until now, many kinds of energy storage devices, such as lithium‐ion batteries (LIBs), sodium‐ion batteries (NIBs), and so on, have been developed in the past 30 years. However, most of the commercially exploited and studied active electrode materials of these energy storage devices possess a single phase with low...
Developing cost‐effective electrocatalysts with high activity and stability for hydrogen evolution reaction (HER) plays an important role in modern hydrogen economy. Amorphous molybdenum sulfide (MoSx) has recently emerged as one of the most promising alternatives to Pt‐based catalysts in HER, especially in acidic electrolytes. Here this study reports a simple ultrasonic spray pyrolysis method to...
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