Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Au nanoparticles with small sizes (2-3 nm) were effectively stabilized in the mesopores of (S)-(-)-2-pyrrolidinone-5-carboxylic acid-modified SBA-15, which showed superior catalytic properties in aerobic oxidation of alcohols, compared with pyrrolidone-free SBA-15 supported Au catalysts.
Layer-by-layer assembled multilayer films composed of gold nanoparticles (Au NPs) and titania nanosheets were constructed on a glass or ITO substrate in an arbitrary layering order. Coverage of Au NPs with 1 to 3 layers of titania nanosheets enhances their plasmon resonance-based absorption and photocurrents. Absorpti…
Reversible operation of a microtubular solid oxide fuel cell (SOFC) with high electrochemical efficiency is reported. These devices can ideally produce hydrogen from electricity and steam [solid oxide electrolyser (SOE)] and then use the stored hydrogen to generate electricity and heat (SOFC), acting as a storage devi…
A synthetic strategy for magnetite crystallite size control is reported, along with the detailed characterization and electrochemical measurements of samples of varying crystallite sizes. Nanocrystalline is prepared by coprecipitation induced by triethylamine from aqueous iron(II) and iron(III) chloride solutions of v…
Electrostatic self-assembly is an important area presenting fascinating opportunities for the design of functional and responsive nanostructures. In this contribution we highlight a recent approach that allows the formation of nanoscale assemblies with a variety of shapes – spheres, rods, hollow spheres, networks and…
In this review, we summarize the current state of understanding of the mechanisms that are important in determining the distribution of particles on fluid–liquid interfaces and of a technique that uses an externally applied electric field to control the microstructure of monolayers on interfaces. When particles come i…
Cu1.94S–ZnS heterostructured nanorods are prepared by injecting Zn(acac)2-dodecanethiol solution into hot reaction systems containing Cu1.94S nanocrystals which catalyze the pyrolysis of Zn(acac)2 and the following epitaxial growth of ZnS on Cu1.94S seeds. Crystallographic analysis suggests that the built-in p–n type…
Reddish-orange long-lasting phosphorescence materials, various amounts of Eu 2+ -and Tm 3+ -co-doped phosphors ͑Ca 2 Si 5 N 8 :Eu 2+ ,Tm 3+ ͒, were prepared by the conventional high temperature solid-state reaction method, and their luminescence properties were systematically investigated by photoluminescence spectra,…
Mixed ionic and electronic conducting (MIEC) oxides are promising materials for use as cathodes in solid oxide fuel cells (SOFCs) due to their enhanced electrocatalytic activity compared with electronic conducting oxides. In this paper, the MIEC oxide was prepared by the sol–gel route. Graded cathodes were deposited o…
Titanium and its alloys have been in industrial use for over half a century; however, applications have been restricted primarily to the aerospace industry, where high strength and light weight are the most critical parameters, and to the chemical industry, where titanium's resistance to corrosion is the most criti- c…
Hierarchical tree-, mushroom- and cockscomb-like ZnO arrays with increasing branching order and complexities have been grown in situ on cheap zinc plates by a simple hydrothermal oxidation approach. Their morphology, crystal structure and orientation relationship are characterized by powder X-ray diffraction, scanning…
The gelation dynamics of a sol of colloidal silica of approximately 7 nm radius particles is studied using a combination of light scattering and rheometry. By changing the ionic strength (by addition of a salt solution resulting in different ultimate molarities) of the mixture, a stable sol can be destabilized, leadin…
The presence of alkylammonium groups covalently grafted on bisphosphonato ligands induces photochromic properties to ligand-coordinated polyoxomolybdate systems. Such intrinsically photoactive polyanions can be used for the preparation of materials combining photochromic polyoxometalates and functional countercations.
Two novel compounds have been hydrothermally synthesized and characterized by IR spectra and single crystal X-ray diffraction analyses. Crystal structure analyses reveal that and exhibit novel 2-D framework structures constructed from tungsten polyoxoanions, metal ions and 4,4-byp units, respectively.
Zn-doped TiO2 nanofibers shelled with ZnO hierarchical nanoarchitectures have been fabricated combining electrospinning of TiO2 (anatase) nanofibers and metal–organic chemical vapor deposition (MOCVD) of ZnO. The proposed hybrid approach has proven suitable for tailoring both the morphology of the ZnO external shell a…
Photoluminescent lanthanopolyoxotungstate core/shell nanoparticles are prepared by the encapsulation of lanthanide-containing polyoxometalates (POMs) with amorphous silica shells. The preparation of morphological well-defined core/shell nanoparticles is achieved by the hydrolysis of tetraethoxysilane in the presence o…
In this paper we report on the magnetic properties of single- and multiwalled carbon nanotubes synthesized using different chemical vapour deposition methods and with variety of catalyst materials (ferromagnetic Fe, FeCo and diamagnetic Re). Different methods yield carbon nanotubes with different morphologies and diff…
Two 15beta-hydroxycardenolides (1,2) and a 16alpha-hydroxycalactinic acid methyl ester (3) along with eleven known compounds including 16alpha-hydroxycalotropagenin, coroglaucigenin, 16alpha-hydroxycalotropin, calactinic acid, calotoxin, 6'-O-(E-4-hydroxycinnamoyl)desglucouzarin, 12beta-hydroxycoroglaucigenin, frugosi…
Single crystal diamond tips with perfect pyramidal geometry were obtained by a combination of chemical vapor deposition and selective oxidation of polycrystalline films. The parameters of the deposition process were chosen to provide growth of a textured film consisting of micrometer sized diamond crystallites embedde…
Reactions of a Co(III) salt with pyrazoles in the presence of a base have yielded metallacyclic {Co(3)}, {Co(10)} and {Co(12)} species whose structural characterization points to a parallel between analogous carboxylate and pyrazolate motifs.