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Synergistic effects are widely accepted as the main reason for the enhancement of the perovskite oxides/carbon material composite electrocatalyst for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). In article number 1802767, Jaephil Cho, Guntae Kim, and co‐workers found that the simultaneous boosting of the ORR/OER via electron transfer between N‐doped graphene and perovskite...
In article number 1803613, Larysa Baraban, Denys Makarov, and co‐workers present an experimental and theoretical study of visible light‐driven Ag/AgCl Janus micromotors revealing high motility in pure H2O. The propulsion efficiency is dependent on the intensity of visible light and contributed by the coupled effect of the plasmonic light absorption of Ag/AgCl and the efficient photochemical decomposition...
As a popular strategy, interlayer expansion significantly improves the Li‐ion diffusion kinetics in the MoS2 host, while the large interlayer spacing weakens the van der Waals force between MoS2 monolayers, thus harming its structural stability. Here, an oxygen‐incorporated MoS2 (O‐MoS2)/graphene composite as a self‐supported intercalation host of Li‐ion is prepared. The composite delivers a specific...
As a promising energy‐storage device, rechargeable Zn‐air batteries have attracted considerable interests. Herein, a bifunctional oxygen electrode film prepared by adhering NiCo2O4 nanosheets to a nitrogen and oxygen dual‐doped carbon nanotubes film in a large scale is reported. The resulting self‐supporting film electrode is multifunctional, which integrates a porous conducting structure for air...
For muscle regeneration, a uniaxially arranged micropattern is important to mimic the structure of the natural extracellular matrix. Recently, cell electrospinning (CE) has been tested to fabricate cell‐laden fibrous structures by embedding cells directly into micro/nanofibers. Although homogenous cell distribution and a reasonable cell viability of the cell‐laden fibrous structure fabricated using...
Immunoblotting confers protein identification specificity beyond that of immunoassays by prepending protein electrophoresis (sizing) to immunoprobing. To accurately size protein targets, sample analysis includes concurrent analysis of protein markers with known molecular masses. To incorporate protein markers in single‐cell western blotting, microwells are used to isolate individual cells and protein...
Although 2D black phosphorus (BP) shows excellent optical and electronic properties, there are few reports on the photoluminescence (PL) properties of BP nanostructures because of the low yield of mechanical exfoliation, instability in water, and relatively weak emission. Herein, liquid exfoliation is combined with surface passivation to produce fluorescent BP quantum dots (BPQDs) with a high yield...
Durability is still one of the key obstacles for the further development of photocatalytic energy‐conversion systems, especially low‐dimensional ones. Encouragingly, recent studies show that nanoinsulators such as SiO2 and MgO exhibit substantially enhanced photocatalytic durability than the typical semiconductor p25 TiO2. Extending this knowledge, MgO–Au plasmonic defect nanosystems are developed...
The photodiode is a prevailing architecture for photodetection with the merits of fast response and low dark current. However, an ideal photodiode is also desired for both high responsivity and high external quantum efficiency (EQE), which may facilitate more applications. Here the photoconducting effect in a photodiode is discussed and an Au–PbS colloidal quantum dot (CQD)–indium tin oxide Schottky...
Layered serpentine Ni3Ge2O5(OH)4 is compositionally active and structurally favorable for adsorption and diffusion of reactants in oxygen evolution reactions (OER). However, one of the major problems for these materials is limited active sites and low efficiency for OER. In this regard, a new catalyst consisting of layered serpentine Ni3Ge2O5(OH)4 nanosheets is introduced via a controlled one‐step...
Paper is emerging as a promising flexible, high surface‐area substrate for various new applications such as printed electronics, energy storage, and paper‐based diagnostics. Many applications, however, require paper that reaches metallic conductivity levels, ideally at low cost. Here, an aqueous electroless copper‐plating method is presented, which forms a conducting thin film of fused copper nanoparticles...
Molybdenum sulfide (MoS2) is a layered material with high activity for electrocatalytic hydrogen evolution reaction (HER). In conventional MoS2, the high electrical resistance between the layers hampers the bulk charge transfer and therefore greatly limits its performance in electrolysis. Herein, ultrathin MoS2 nanosheets with bent layers on reduced graphene oxide (RGO) are reported. In sharp contrast...
Atomic thin transition‐metal dichalcogenides (TMDs) are considered as an emerging platform to build next‐generation semiconductor devices. However, to date most devices are still based on exfoliated TMD sheets on a micrometer scale. Here, a novel chemical vapor deposition synthesis strategy by introducing multilayer (ML) MoS2 islands to improve device performance is proposed. A four‐probe method is...
Traditionally, ammonia (NH3) is synthesized via the Haber–Bosch process, which is not only commanded by harsh conditions but causes serious environmental pollution. Electrochemical reduction is recognized as a mild and environmentally benign alternative approach for NH3 synthesis, but an efficient electrocatalyst is a prerequisite for NH3 production. In this communication, the first experimental demonstration...
Fabricating perovskite oxide/carbon material composite catalysts is a widely accepted strategy to enhance oxygen reduction reaction/oxygen evolution reaction (ORR and OER) catalytic activities. Herein, synthesized, porous, perovskite‐type Sm0.5Sr0.5CoO3‐δ hollow nanofibers (SSC‐HF) are hybridized with cross‐linked, 3D, N‐doped graphene (3DNG). This rationally designed hybrid catalyst, SSC‐HF‐3DNG...
Osteoporosis, a common and serious bone disorder affecting aged people and postmenopausal women, is characterized by osteoclast overactivity. One therapeutic strategy is suppressing the bone resorption function of hyperactive osteoclasts, but there is no effective drug in clinical practice so far. Herein, it is demonstrated that fullerenols suppress the bone resorption of osteoclasts by inhibiting...
Visible light‐driven nano/micromotors are promising candidates for biomedical and environmental applications. This study demonstrates blue light‐driven Ag/AgCl‐based spherical Janus micromotors, which couple plasmonic light absorption with the photochemical decomposition of AgCl. These micromotors reveal high motility in pure water, i.e., mean squared displacements (MSD) reaching 800 µm2 within 8...
Highly stable and low‐cost electrocatalysts with multi‐electrocatalytic activities are in high demand for developing advanced energy conversion devices. Herein, a unique trifunctional amorphous iron‐borate electrode is developed, which is capable of boosting hydrogen evolution, oxygen evolution, and oxygen reduction reactions simultaneously. The amorphous iron borate can self‐assemble into well‐defined...
Arrays of nanoscale pyramidal cages embedded in a silicon nitride membrane are fabricated with an order of magnitude miniaturization in the size of the cages compared to previous work. This becomes possible by combining the previously published wafer‐scale corner lithography process with displacement Talbot lithography, including an additional resist etching step that allows the creation of masking...
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