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Ultrathin 2D inorganic nanomaterials are good candidates for lithium‐ion batteries, as well as the micro/nanocage structures with unique and tunable morphologies. Meanwhile, as a cost‐effective method, chemical doping plays a vital role in manipulating physical and chemical properties of metal oxides and sulfides. Thus, the design of ultrathin, hollow, and chemical doped metal sulfides shows great...
A simple one‐pot solvothermal method is reported to synthesize VS2 nanosheets featuring rich defects and an expanded (001) interlayer spacing as large as 1.00 nm, which is a ≈74% expansion as relative to that (0.575 nm) of the pristine counterpart. The interlayer‐expanded VS2 nanosheets show extraordinary kinetic metrics for electrocatalytic hydrogen evolution reaction (HER), exhibiting a low overpotential...
Molybdenum diselenide (MoSe2) is widely considered as one of the most promising catalysts for the hydrogen evolution reaction (HER). However, the absence of active sites and poor conductivity of MoSe2 severely restrict its HER performance. By introducing a layer of MoO2 on Mo foil, MoSe2/MoO2 hybrid nanosheets with an abundant edge and high electrical conductivity can be synthesized on the surface...
2D layered materials with sensitive surfaces are promising materials for use in chemical sensing devices, owing to their extremely large surface‐to‐volume ratios. However, most chemical sensors based on 2D materials are used in the form of laterally defined active channels, in which the active area is limited to the actual device dimensions. Therefore, a novel approach for fabricating self‐formed...
Sandwich‐like MoS2@SnO2@C nanosheets are prepared by facile hydrothermal reactions. SnO2 nanosheets can attach to exfoliated MoS2 nanosheets to prevent restacking of adjacent MoS2 nanosheets, and carbon transformed from polyvinylpyrrolidone is coated on MoS2@SnO2, forming a sandwich structure to maintain cycling stability. As an anode for sodium‐ion batteries, the electrode greatly deliverers a high...
In article number 1703818, Ming Zhang and co‐workers prepare sandwich‐like MoS2@SnO2@C nanosheets by two‐step hydrothermal reactions, which show high capacities and excellent cycling stability for sodium/potassium ion batteries. This work may provide a new strategy to prepare other composites which can be applied to new kinds of rechargeable batteries.
Herein, bimetallic iron (Fe)–manganese (Mn) oxyhydroxide ((Fe1−x,Mnx)OOH, FeMnOOH) nanosheets on fluorine‐doped tin oxide conducting substrates and on semiconductor photoanodes are synthesized by a facile, room temperature, electroless deposition method as catalysts for both electrochemical and photo‐electrochemical (PEC) water splitting, respectively. Surprisingly, Mn‐doped FeOOH can significantly...
Layered inorganic solids as an attractive classification of 2D materials offer material diversity and a wide range of interesting properties. Layered inorganic solids provide an expandable 2D nanospace between each individual layer, the so called interlayer space, to accommodate/arrange guest species such as molecules, nanoparticles, and polymer chains and design unique nanoarchitectures, resulting...
Metal oxides have advantages over the traditional noble metals to be used as substrate materials for surface‐enhanced Raman spectroscopy (SERS) with low cost, versatility, and biocompatibility, but their enhancement factors are generally quite low with a poor limit of detection. Here, ultrathin molybdenum dioxide (MoO2) nanosheets synthesized by chemical vapor deposition demonstrated in large area...
In article number 1802260, Byeong‐Soo Bae, Il‐Doo Kim, and co‐workers describe a highly sensitive, flexible sensing platform that employs Pt‐loaded SnO2 nanosheets (Pt‐SnO2 NSs) and an Ag nanowires embedded glass‐fabric reinforced hybrimer heater substrate. The ultrathin Pt‐SnO2 NSs‐loaded flexible heater substrate offers not only high mechanical stability but also a superior response towards 1 ppm...
The development of flexible chemiresistors is imperative for real‐time monitoring of air quality and/or human physical conditions without space constraints. However, critical challenges such as poor sensing characteristics, vulnerability under toxic chemicals, and weak reliability hinder their practical use. In this work, for the first time, an ultrasensitive flexible sensing platform is reported...
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