We report a facile approach to synthesize nanocomposites with Fe3O4 nanopaticles (NPs) attached reduced graphene oxide (rGO) sheets by solvothermal process, which combines the growth of NPs and reduction GOs in one single step. These Fe3O4/rGO were further used fabricate thin film supercapacitor electrodes using spray deposition technique without addition insulating binders. It was found that showed much higher specific capacitances than either pure rGO or NPs. carried out electrochemical...

Ink-jet printing of thermoelectric nanomaterials is successfully used to fabricate flexible thin film TE devices for power generation and cooling. As a service our authors readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed may be re-organized online delivery, but not copy-edited or typeset. Technical support issues arising from (other than missing files) should addressed Please note: The publisher responsible content functionality...

Olivine-type LiMPO4 (M = Fe, Mn, Co, Ni) has become of great interest as cathodes for next-generation high-power lithium-ion batteries. Nevertheless, this family compounds suffers from poor electronic conductivities and sluggish lithium diffusion in the [010] direction. Here, we develop a liquid-phase exfoliation approach combined with solvothermal lithiation process high-pressure high-temperature (HPHT) supercritical fluids fabrication ultrathin nanosheets (thickness: 3.7-4.6 nm) exposed...

In this work, we investigated the kinetic balance between ammonia-catalyzed hydrolysis of tetraethyl orthosilicate (TEOS) and subsequent condensation over growth silica particles in Stöber method. Our results reveal that, at initial stage, reaction is dictated by TEOS to form silanol monomers, which denoted as pathway I responsible for nucleation small via neighboring monomers siloxane network clusters derived thereafter. Afterward, newly formed onto earlier particles, II enlargement size...

A facile method was developed to synthesize free-standing Si nanosheets by using graphene oxide as a template. The resulting were well-crystallized and showed high stable Li ion storage performance compared with nanoparticles because of the dimensional feature.

Three dimensional (3D) ordered hierarchically porous electrodes with an entrapped active nanoparticles configuration afford extremely effective conductive 3D network from the micrometer to nano meter scale for fast electron and Li-ion transport, also allow development of a stable solid electrolyte interphase over electrode materials, therefore exhibiting extraordinary rate capabilities.

Materials with ordered mesoporous structures have shown great potential in a wide range of applications. In particular, the combination mesoporosity, low dimensionality, and well-defined morphology nanostructures may exhibit even more attractive features. However, synthesis such is still challenging polar solvents. Herein, we report preparation ultrathin two-dimensional (2D) nanoflakes transition-metal phosphates, including FePO4, Mn3(PO4)2, Co3(PO4)2, highly nonpolar solvent. The...

Nanodroplets on a solid surface (i.e. nanodroplets) have practical implications for high-throughput chemical and biological analysis, lubrications, lab-on-chip devices, near-field imaging techniques. Oil nanodroplets can be produced solid-liquid interface in simple step of solvent exchange which good oil is displaced by poor solvent. In this work, we experimentally theoretically investigate the formation process under well-controlled flow conditions. We find that contact angle independent...

Abstract 2D materials based on main group element compounds have recently attracted significant attention because of their rich stoichiometric ratios and structure motifs. This review focuses the phases in various binary including III–VI, IV–VI, V–VI, III–V, IV–V, V–V materials. Reducing 3D to introduces confinement surface effects as well stabilizes unstable form. Their crystal structures, stability, preparation, applications are summarized theoretical predictions experimental explorations....

Global demand for green and clean energy is increasing day by owing to ongoing developments the human race that are changing face of earth at a rate faster than ever. Exploring alternative sources replace fossil fuel consumption has become even more vital control growing concentration CO2, reduction CO2 into CO or other useful hydrocarbons (e.g., C1 C≥2 products), as well N2 ammonia, can greatly help in this regard. Various materials have been developed N2. The introduction pores these...

Heavy reliance on petrochemical-based plastic foams in both industry and society has led to severe pollution (the so-called "white pollution"). In this work, we develop a biodegradable, recyclable, sustainable cellulose/bentonite (Cel/BT) foam material directly from resource-abundant natural materials (i.e., lignocellulosic biomass minerals) via ambient drying. The strong resistance the capillary force-driven structural collapse of preformed three-dimensional (3D) network during drying...

Enhancing ion and electron transport kinetics together with improving cycle life are important issues to be considered when developing high-performance Li batteries. Here we demonstrate a three dimensional ordered macroporous conductive electrode concept by entrapping active nanoparticles in an interpenetrating carbon inverse opal. The electrodes featured simultaneously enhanced as well geometrically constrained nanoparticles. can deliver up 94.17% of theoretical capacity over 1000...

We report here a study on the Li ion storage performance of binary phased SnO2/rGO and ternary SnO2–Fe2O3/rGO composite nanostructures. The were prepared by facile wet-chemical approach. performances these samples closely related to weight ratio SnO2 : rGO or Fe2O3 rGO. It was found that nanostructures (e.g. with = 11 1 13) showed significant enhancement specific capacities cyclabilities as compared samples. For example, electrode depicted capacity 958 mA h g−1 at current density 395 (0.5 C)...

Significance The phenomenon of spontaneous nanodroplet formation termed the “Ouzo effect” is basis for many processes, from preparation pharmaceutical products, to formulation cosmetics and insecticides, liquid–liquid microextraction. This work attempts disentangle effects concentration gradients extrinsic mixing dynamics by spatiotemporally following Ouzo effect confined in a quasi-2D geometry. We observe striking universal branch structures nucleating droplets under external diffusive...

Ultrasonic treatment was employed to improve the dispersibility of Fe3O4 nanoparticles dispersed in aqueous solutions. Electrophoresis and XPS spectra indicate that ultrasonic can induce generation chemisorbed hydroxyl groups oxidation Fe2+ ions on surface magnetic nanoparticles, thus resulting improved nanoparticles. After growth silica protection layers with different times treatment, Fe3O4/SiO2 core/shell amounts cores were successfully prepared.

Ultrathin single-crystalline V2O5·0.76H2O nanosheets with a thickness of 1.5–2.6 nm are prepared on the basis molecular-level ‘oriented attachment’ through special sol–gel chemistry. The initial formation 3–7 nanodiscs by confining condensation reactions within ab plane is critical to form nanosheets. As proof-of-concept, these exhibit good properties for hydrogen sensors and supercapacitors. service our authors readers, this journal provides supporting information supplied authors. Such...

Despite advancements in biomimetic mineralization techniques, the repair of large-scale bone defects remains a significant challenge. Inspired by formation process, multidimensional cascade strategy is developed replicating biomineralization cascade, emulating hierarchical structure bone, and biomimicking its biological functions for efficient regeneration. This involves photocrosslinking sodium methacrylate carboxymethyl cellulose-stabilized amorphous magnesium-calcium phosphate with...

Solvent exchange is a simple process of forming surface nanodroplets on an immersed substrate. In this process, the droplets nucleate and grow in response to transient oversaturation when good solvent droplet liquid displaced by poor solvent. Here we will show how final size influenced solution composition exchange. To do this, produced water hydrophilic substrate cyclohexane hydrophobic using tertiary system cyclohexane, ethanol, water. The was varied systematically one-phase region phase...

Solvent exchange is a simple process to form oil nanodroplets at solid-liquid interfaces with well-defined location and morphology. In this process, good solvent of the displaced by poor solvent, leading nucleation growth droplets from transient oversaturation mixing front. Our recent work has shown that final volume related flow conditions. work, we investigate effects type composition solvents on droplet formation under same Water were produced ethanol/cyclohexane (solution A) cyclohexane...

Abstract Durability is still one of the key obstacles for further development photocatalytic energy‐conversion systems, especially low‐dimensional ones. Encouragingly, recent studies show that nanoinsulators such as SiO 2 and MgO exhibit substantially enhanced durability than typical semiconductor p25 TiO . Extending this knowledge, MgO–Au plasmonic defect nanosystems are developed combine stable photoactivity from surface defects with energy‐focusing plasmonics Au nanoparticles (NPs), where...

Monodisperse magnetizable silica composite particles were prepared from heteroaggregates of carboxylic polystyrene latex and Fe(3)O(4) nanoparticles. It was found that the heteroaggregation nanoparticles is dependent on pH solution. At low value (pH = 2-4), aggregation proceeds effectively due to opposite charges surfaces magnetic high (pH>8), no observed negative charge both surface The heteroaggregate be stable in a wide range values, existence coordination interactions at interface After...