Particularly uniform: Monodisperse ferrite microspheres can be synthesized to have diameters of about 200–800 nm (TEM image, left). High-resolution TEM analysis (image, right and inset) shows that each microsphere is a single crystal. Their hydrophilic magnetic properties impart the microparticles many potential uses in electronics biomedicine.

Nearly monodisperse single-crystalline Cu2O nanospheres were prepared by an effective solution method with NaBH4 as the reducing agent. Sensors based on them have good sensitivity to some flammable gases because thin films formed capacious interspaces and enough spherical surfaces interact (ppm level).

A selective-control hydrothermal method has been developed in the preparation of α- and β-MnO2 single-crystal nanowires. The crystal structure morphology final products can be influenced by concentration NH4+ SO42-.

Alpha-, beta-, gamma-, and delta-MnO(2) single-crystal nanowires/nanorods with different aspect ratios have been successfully prepared by a common hydrothermal method based on the redox reactions of MnO(4)(-) and/or Mn(2+). The influences oxidant, temperature, inorganic cation (NH(4)(+) K(+)) template concentrations morphology crystallographic forms final products are discussed in this paper. It is interesting to find that all MnO(2) one-dimensional nanostructures similar formation process:...

Barreling along: 3D macrostructures (cylinder; see picture) have been assembled from single-layered graphene oxide and noble-metal nanocrystals (Au, Ag, Pd, Ir, Rh, Pt, etc.). Although the density of cylinders is very low (ca. 0.03 g cm−3), they show excellent mechanical properties utilized as a fixed-bed catalyst for Heck reaction, which proceeded with nearly 100 % selectivity conversion. Detailed facts importance to specialist readers are published "Supporting Information". Such documents...

Great attention has been focused on the design of electrocatalysts to enable electrochemical water splitting-a technology that allows energy derived from renewable resources be stored in readily accessible and non-polluting chemical fuels. Herein we report a bifunctional nanotube-array electrode for splitting alkaline electrolyte. The requires overpotentials 58 mV 184 hydrogen oxygen evolution reactions respectively, meanwhile maintaining remarkable long-term durability. prominent...

Imaging membranes in live cells with nanometer-scale resolution promises to reveal ultrastructural dynamics of organelles that are essential for cellular functions. In this work, we identified photoswitchable membrane probes and obtained super-resolution fluorescence images membranes. We demonstrated the photoswitching capabilities eight commonly used probes, each specific plasma membrane, mitochondria, endoplasmic recticulum (ER) or lysosomes. These small-molecule readily label high probe...

It's a small world! The hydrothermal synthesis of family lanthanide hydroxide single-crystal nanowires has been achieved (see picture), the properties and dimensions which can be tailored by changes in chemical potential pH value reaction media. Such materials might serve as templates for biological labeling agents, one many applications.

Assembly of single layers: Three-dimensional assembly single-layered MoS2 is achieved on a large scale via solution method. The as-prepared tubular architectures have tunable size and mesopores in the shell, which are desirable for applications. As example, they exhibit excellent lithium storage properties highly active hydrodesulfurization thiophene resulting from their structural advantages.

Abstract Single atoms immobilized on metal–organic frameworks (MOFs) with unique nanostructures have drawn tremendous attention in the application of catalysis but remain a great challenge. Various single noble‐metal now been successfully anchored well‐defined anchoring sites zirconium porphyrin MOF hollow nanotubes, which are probed by aberration‐corrected scanning transmission electron microscopy and synchrotron‐radiation‐based X‐ray absorption fine‐structure spectroscopy. Owing to...

SnO2 quantum dots (QDs) and ultrathin nanowires (NWs) with diameters of approximately 0.5-2.5 1.5-4.5 nm, respectively, were controllably synthesized in a simple solution system. They are supposed to be ideal models for studying the continuous evolution quantum-confinement effect 1D --> 0D systems. The observed transition from strong weak confinement QDs NWs is interpreted through use Brus effective-mass approximation Nosaka finite-depth well model. Photoluminescence properties that...

Highly active and robust eletcrocatalysts based on earth-abundant elements are desirable to generate hydrogen oxygen as fuels from water sustainably replace noble metal materials. Here we report an approach synthesize porous hybrid nanostructures combining amorphous nickel-cobalt complexes with 1T phase molybdenum disulfide (MoS2) via hydrazine-induced transformation for splitting. The exhibit overpotentials of 70 mV evolution 235 at 10 mA cm-2 long-term stability, which have superior...

Well-rounded: Water-dispersed colloidal spheres that are self-assembled from nanocrystals with different size, shape, composition, and surface ligand were prepared through a versatile emulsion-based self-assembly (EBS) approach. Through this emulsification process, dispersion of BaCrO4 in cyclohexane (see picture, left) can be transformed into right).

Abstract Metal–organic frameworks (MOFs) have demonstrated great potentials in a variety of important applications. To enhance the inherent properties and endow materials with multifunctionality, rational design synthesis MOFs nanoscale porosity hollow feature is highly desired remains challenge. In this work, formation series well‐defined MOF (MOF‐5, Fe II ‐MOF‐5, III ‐MOF‐5) nanocages by facile solvothermal method, without any additional supporting template reported. A...

In this paper, a hydrothermal synthetic route has been developed to prepare class of rare-earth fluoride nanocrystals, which have shown gradual changes in growth modes with decreasing ionic radii and may serve as model system for studying the underlying principle controlled nanocrystals. Furthermore, we demonstrate functionalization these nanocrystals by means doping, visible-to-the-naked-eye green up-conversion emissions find application biological labeling fields.

In this work, we have successfully synthesized free-standing ultrathin Pt–Cu alloy nanosheets of 4–6 atom thickness with tunable lateral size from 10 to 50 nm. The diameters >20 nm can be converted into nanocones in a controllable way. These and exhibit excellent electrocatalytic activities for the oxidation ethanol comparison commercial Pt black Pt/C catalysts.

Abstract Metal‐organic frameworks (MOFs) are potentially useful molecular materials that can exhibit structure flexibilities induced by some external stimuli. Such transformations furnish MOFs with improved properties. The shape‐controlled growth of combined crystal‐structure transformation is rarely achieved. Herein, we demonstrate the synthesis hierarchical Zn/Ni‐MOF‐2 nanosheet‐assembled hollow nanocubes (NAHNs) a facile surfactant‐free solvothermal approach. unique nanostructures undergo...

Nanocages with controllable shapes, tunable compositions, and narrow size distributions have been synthesized by using the monodispersed ceria clusters as templates.

Multidimensional nano-heterostructures (NHSs) that have unique dimensionality-dependent integrative and synergic effects are intriguing but still underdeveloped. Here, we report the first helical 1D/2D epitaxial NHS between CdS ZnIn2S4. Experimental theoretical studies reveal mismatches in lattice dangling bonds 1D 2D units govern growth procedure. The resulting well-defined interface induces delocalized states, thus facilitate charge transfer enhance performance photoelectrochemical cells....

Abstract Recently, the development of high-performance non-platinum electrocatalysts for fuel cell applications has been gaining attention. Palladium-based nanoalloys are considered as promising candidates to substitute platinum catalysts cathodic and anodic reactions in cells. Here, we develop a facile route synthesize dendritic palladium–copper–cobalt trimetallic robust multifunctional oxygen reduction formic acid oxidation. To best our knowledge, mass activities Pd 59 Cu 30 Co 11...

To enhance the intrinsic properties and realize novel functionalities toward desired applications, it is of great significance to construct molybdenum carbide with unique architecture but still remains highly challenging. Herein, we demonstrate a simple synthetic method. Initially, Mo-based polyoxometalate-anion-incorporated Ni-MOF (metal–organic framework) hollow structure prepared through dissolution–regrowth process. Then, carbon-containing polymer coated on surface precursor. After being...