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[ASAP] Free-Standing Black Phosphorus Thin Films for Flexible Quasi-Solid-State Micro-Supercapacitors with High Volumetric Power and Energy Density
Janus membrane decorated via a versatile immersion-spray route: controllable stabilized oil/water emulsion separation satisfying industrial emission and purification criteria
DOI: 10.1039/C8TA11452H, Paper
A PANI–SiNP-decorated Janus membrane was fabricated for highly efficient stabilized oil-in-water and water-in-oil emulsion separation, meeting industrial purification standards.
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Rapid synthesis of ultrathin 2D materials through liquid-nitrogen and microwave treatments
DOI: 10.1039/C8TA11497H, Communication
A new universal and rapid method to exfoliate bulk layered materials into ultrathin 2D structures with thicknesses of less than 5 nm through liquid-nitrogen and microwave treatments.
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Correction: High capacity potassium-ion battery anodes based on black phosphorus
DOI: 10.1039/C9TA90016K, Correction
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
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3D printed electrochemical energy storage devices
DOI: 10.1039/C8TA11860D, Review Article
Recent progress in 3D printing of electrochemical energy storage devices.
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Enhanced photocatalytic activity for water splitting of blue-phase GeS and GeSe monolayers via biaxial straining
DOI: 10.1039/C8NR08908F, Paper
Enhanced photocatalytic activity for water splitting of blue-phase GeS and GeSe monolayers via biaxial straining.
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Controllable Growth of Graphene on Liquid Surfaces
Recent advancement in the controllable growth of graphene on liquid surfaces is comprehensively reviewed. Melted liquids offer a smooth surface, which enables uniform tailoring of the morphologies of graphene, and a rheological surface, which allows for self‐adjusted movement of the graphene grains. The exciting progress in controlled growth behaviors of graphene on a liquid surface is presented and discussed in depth.
Abstract
Controllable fabrication of graphene is necessary for its practical application. Chemical vapor deposition (CVD) approaches based on solid metal substrates with morphology‐rich surfaces, such as copper (Cu) and nickel (Ni), suffer from the drawbacks of inhomogeneous nucleation and uncontrollable carbon precipitation. Liquid substrates offer a quasiatomically smooth surface, which enables the growth of uniform graphene layers. The fast surface diffusion rates also lead to unique growth and etching kinetics for achieving graphene grains with novel morphologies. The rheological surface endows the graphene grains with self‐adjusted rotation, alignment, and movement that are driven by specific interactions. The intermediary‐free transfer or the direct growth of graphene on insulated substrates is demonstrated using liquid metals. Here, the controllable growth process of graphene on a liquid surface to promote the development of attractive liquid CVD strategies is in focus. The exciting progress in controlled growth, etching, self‐assembly, and delivery of graphene on a liquid surface is presented and discussed in depth. In addition, prospects and further developments in these exciting fields of graphene growth on a liquid surface are discussed.
Polyelemental Nanolithography via Plasma Ion Bombardment: From Fabrication to Superior H2 Sensing Application
A general method for polyelemental nanopatterning is developed by using low‐energy Ar+ plasma. This method is not restricted to the selection of elements and their combination, and complex shapes and arrays with high‐resolution (≈10 nm) and tunable inner structures can be achieved. Using a Pd–Au nanopattern for a hydrogen gas sensor, the fastest sensing speed is observed.
Abstract
The development of complex nanostructures containing a homo‐ and heteromixture of two or more metals is a considerable challenge in nanotechnology. However, previous approaches are considerably limited to the number of combinations of metals depending on the compatibility of elements, and to the complex shape control of the nanostructure. In this study, a significant step is taken toward resolving these limitations via the utilization of a low‐energy argon‐ion bombardment. The multilayer films are etched and re‐sputtered on the sidewall of the pre‐pattern, which is a secondary sputtering phenomenon. In contrast to the precursor mixing method, most metallic combinations can be fabricated. The degree of mixing is tuned by the control of the sequence and thickness of multilayers. In addition, the feature shape and dimensions are controlled by changing the pre‐pattern or by controlling the ion‐beam angle. Using this method, the shortest response time (2 s to 1% H2) in comparison with those of Pd‐based H2 sensors reported previously and a limit of detection below 1 parts per million (ppm) for Pd/Au and Pd/Pt bimetallic line arrays are achieved. This study is expected to realize a family of polyelements that can be used in various applications.
[ASAP] Reusable Enzymatic Fiber Mats for Neurotoxin Remediation in Water
[ASAP] Fouling-Resistant and Self-Cleaning Aliphatic Polyketone Membrane for Sustainable Oil–Water Emulsion Separation
Self-Healing and Superwettable Nanofibrous Membranes for Efficient Separation of Oil-in-Water Emulsions
DOI: 10.1039/C8TA10254F, Paper
The development of a practical and efficient separation membrane is significant for the purification of emulsified oily wastewaters; however, circumventing certain critical limitations such as low flux, membrane fouling and...
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Disordered Structures in Biology Can Provide Material Properties not Obtained with Precise Hierarchy
Disordered biological materials are found throughout biology. Herein, materials from four different classes are explored: soft and organic (mussel byssus, human skin), hard and organic (hedgehog quills), soft and an organic/inorganic composite (oyster adhesive, tuatara shells), and hard and an organic/inorganic composite (barnacle exoskeleton, oyster shells). Within each class disorder is found to provide increased flexibility and fracture resistance.
Abstract
Biological organisms exist in an astounding array of habitats. The materials produced by these organisms correspondingly exhibit significant diversity in function and form. Highly ordered and structured biological materials have been the subject of intense scientific investigation, especially in the context of exploring possible models for functional materials. Biological materials lacking in organized structure, on the other hand, such as barnacle exoskeletons, have largely been ignored. Here disordered biological materials falling into four different classes are discussed: soft and organic, hard and organic, soft and a composite of organic and inorganic, and hard and a composite of organic and inorganic. Across the examples within each class of materials one can see disorder at different length scales providing increases in fracture resistance or flexibility, suggesting disordered biological materials have much to teach us in terms of materials design.
Micro/Nanometer‐Structured Scaffolds for Regeneration of Both Cartilage and Subchondral Bone
Micro/nanostructured surfaces in bredigite scaffolds are successfully prepared via a hydrothermal process. In vitro, the micro/nanostructured surface significantly promotes differentiation of chondrocytes by activating integrins α5β1 and αvβ1, and stimulates osteogenic differentiation of rabbit bone marrow stromal cells through the synergetic effects of integrin α5β1 and RhoA. Furthermore, the micro/nanostructured surface possesses dual physiological functions for the regeneration of both cartilage and subchondral bone.
Abstract
Treatment of osteochondral defects remains a great challenge in clinical practice because cartilage and subchondral bone possess significantly different physiological properties. In this study, the controlled surface micro/nanometer structure of bioactive scaffolds in a combination of biomaterial chemistry is harnessed to address this issue. Model bioactive biomaterials, bredigite (BRT) scaffolds, with controlled surface micro/nanostructure are successfully fabricated by combining 3D printing with a hydrothermal process. It is found that the growth of micro/nano–calcium phosphate crystals on the surface of BRT scaffolds notably enhances their compressive strength by healing the microcracks on the strut surface. The micro/nanostructured surface distinctly facilitates the spread and differentiation of chondrocytes by activating integrin αvb1 and α5b1 heterodimers, regulates cell morphology, and promotes osteogenic differentiation of rabbit bone marrow stromal cells (rBMSCs) through the synergetic effect of integrin α5b1 and RhoA, in which the microrod surface demonstrates the highest stimulatory effect on the differentiation of chondrocytes and rBMSCs. The in vivo study shows that the micro/nanostructured surface of the 3D printed scaffolds obviously promotes the regeneration of both cartilage and subchondral bone tissues. This study suggests that the construction of controlled micro/nanostructured surface in porous 3D scaffolds offers a smart strategy to induce bilineage bioactivities for osteochondral regeneration.
Morphology Controlled Synthesis of Low Bandgap SnSe2 with High Photodetectivity
DOI: 10.1039/C8NR08138G, Communication
Engineering the properties of layered metal dichalcogenides (LMDs) requires stringent control of their morphology. Herein, using a scalable one-step solvothermal technique, we report synthesis of SnSe2 under two different conditions,...
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Cold Plasma gas loaded microbubbles as a novel ultrasound contrast agent
DOI: 10.1039/C8NR08451C, Paper
Nowadays, cold atmospheric plasma (CAP) that contains lots of active free radicals has tremendous potential applications in biomedical engineering, and target delivery of a controllable dose of plasma gas is...
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A Liquid Metal-Based Self-Adaptive Sulfur-Gallium Composite for Long-Cycle Lithium-Sulfur Batteries
DOI: 10.1039/C8NR08625G, Communication
Lithium-sulfur (Li-S) batteries have been regarded as a promising candidate for energy storage owing to the ultrahigh theory capacity and low cost. However, the commercial application of Li-S batteries have...
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Electrical switching properties and structural characteristics of GeSe–GeTe films
DOI: 10.1039/C8NR07832G, Paper
The local structural motifs in GeSe–GeTe have been determined, which is essential to understand its thermal and electrical switching behavior.
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High-speed imaging and tracking of very small single nanoparticles by contrast enhanced microscopy
DOI: 10.1039/C8NR06789A, Paper
Nanoparticles have been used extensively in biology-related research and many applications require direct visualization of individual nanoparticles under optical microscopy. For long-term and high-speed measurements, scattering-based microscopy is a unique...
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Shaping iron oxide nanocrystals for magnetic separation applications
DOI: 10.1039/C8NR05864D, Paper
The large magnetophoretic mobility stemming from the large magnetic susceptibility and the very small coercivity of octapod-shaped iron oxide nanoparticles improve their capability for magnetic separation.
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Self-assembly on optical fibers: a powerful nanofabrication tool for next generation “lab-on-fiber” optrodes
DOI: 10.1039/C8NR06002A, Review Article
A comprehensive review of the self-assembly techniques applied to the development of nanostructured sensing devices based on optical fibers.
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[ASAP] Killing Two Birds with One Stone: Coating Ag NPs Embedded Filter Paper with Chitosan for Better and Durable Point-of-Use Water Disinfection
Two-dimensional black phosphorus: its fabrication, functionalization and applications
DOI: 10.1039/C8NR07395C, Review Article
Phosphorus, one of the most abundant elements in the Earth (∼0.1%), has attracted much attention in the last five years since the rediscovery of two-dimensional (2D) black phosphorus (BP) in 2014.
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An artificial intelligence atomic force microscope enabled by machine learning
DOI: 10.1039/C8NR06734A, Paper
An AI-AFM is capable of classification, feature identification, and adaptive experimentation, all without human interference.
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Ultra-sensitive and plasmon-tunable graphene photodetectors for micro-spectrometry
DOI: 10.1039/C8NR04996C, Paper
We demonstrate an ultra-sensitive photodetector based on a graphene/monolayer MoS2 vertical heterostructure working at room temperature.
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Structure and properties of intrinsic and extrinsic defects in black phosphorus
DOI: 10.1039/C8NR06640J, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
The electronic and geometric structures of a range of intrinsic and extrinsic defects in black phosphorus (BP) are calculated using Density Functional Theory (DFT) and a hybrid density functional.
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Efficient light trapping and broadband absorption of the solar spectrum in nanopillar arrays decorated with deep-subwavelength sidewall features
DOI: 10.1039/C8NR06210B, Paper
Deep subwavelength sidewall scalloping (DSSS) on the broadband absorption of nanopillar arrays.
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In situ grown nickel selenide on graphene nanohybrid electrodes for high energy density asymmetric supercapacitors
DOI: 10.1039/C8NR06345A, Paper
A NiSe–G∥AC asymmetric supercapacitor with both pseudocapacitance and EDLC mechanisms provides an energy density of 50.1 W h kg−1 and a power density of 816 W kg−1.
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Preparation of fluorinated PCL porous microspheres and a super-hydrophobic coating on fabrics via electrospraying
DOI: 10.1039/C8NR05793A, Paper
One-step single-solvent electrospray technology to produce fluorinated PCL honeycomb-like microspheres with a pore structure and a super-hydrophobic coating on fabrics via electrospraying.
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Highly conductive and bendable gold networks attached on intertwined cellulose fibers for output controllable power paper
DOI: 10.1039/C8TA08293F, Paper
Paper-based gold networks obtained by a double bottom-up growth strategy enables low-cost fabrication of flexible electronics.
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Promise and Challenge of Phosphorus in Science, Technology, and Application
The synthesis, properties, functionalization, and applications of phosphorus are reviewed to reveal the challenges and opportunities facing present and future research on phosphorus‐based functional materials. The topological constructions of various phosphorus‐based functional materials are an encouraging prospect in the rapid development of nanotechnology.
Abstract
Tremendous progress has been made in scientific research and application of phosphorus allotropes and their hybrid materials in recent decades. In particular, nanomaterial design has emerged as a promising solution to tackle many fundamental problems in conventional materials. This review discusses phosphorus‐based functional materials from the perspective of topological structures, which have several advantages such as good chemical stability, high surface areas, adjustable particle sizes and compositions, as well as various functionalities that enable a good performance in energy storage and conversion as well as other applications. Then, the progress on these functional materials for application in batteries, supercapacitors, catalysis, field‐effect transistors, optoelectronics, flexible electronics, sensors, biomedicine, etc., is discussed and summarized as well. Special attention is given to the research efforts to overcome the inherent shortcomings faced by red/black phosphorus. The aim is to elucidate the relationship between the phosphorus‐based topological structures and their performance. Finally, this review casts an insightful outlook on the future direction of the phosphorus‐based materials in nanotechnology.


