Materials Literature
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This report describes a new approach to successfully synthesize high-quality nickel oxide (NiO) nanorods with an average diameter of about 60 nm and a length of less than one micrometre viathermal decomposition of a precursor complex nickel benzoate dihydrazinate at 100 °C. The structural features, crystallinity, puri…
Nanostructured materials are a new class of enzyme mimics, the inhibitors of which have not been studied. Herein, we demonstrate the screening of inhibitors for Au@Pt nanorod (NR) oxidase mimics. In addition, based on the enzyme inhibition reaction, determination of "poisoning" inhibitors is demonstrated.
Here we demonstrate a new route to achieve the sintering of silver nanoparticles (Ag NPs) at room temperature. The as-prepared Ag NPs coalesced when they were immersed in electrolyte solutions, such as NaCl and MgSO4. The square resistances of Ag NPs thin films decreased from tens of kiloohms to lower than 1 ohm after…
Both the excitation and emission processes of a fluorescent molecule positioned near a noble metal nanocrystal can interact strongly with the localized surface plasmon resonance of the metal nanocrystal. While the effects of this plasmon-fluorophore interaction on the intensity, polarization, and direction of the fluo…
National Basic Research Program of China [2007CB707803]; Chinese National Programs for High Technology Research and Development
We present a simple seed-less synthesis procedure to fabricate stable gold nanostars (AuNSs) with tunable extinction properties from the visible up to 1800 nm, depending on the average values of core size and branch length. The experimental results are compared with data from Finite Elements Method computations by usi…
We report here the biosynthesis of gold and silver nanoparticles using leaf extract of ginger (Zingiber officinale). The treatment of aqueous solution of AgNO3 and HAuCl4 with ginger leaf extract resulted in rapid formation of stable nanoparticles for both metals. The growth of nanoparticles is monitored by UV-vis spe…
Helical structures with their unique topology have attracted broad attention during the past decade. Rotational symmetry, chirality, and unusual mechanical properties are just a few attributes associated with helical geometry that make it special for materials science. Typically helical geometry was the domain of biol…
In this work, flower-like hierarchical a-MnO2 sub-microspherical superstructures were synthesized by means of a novel interfacial strategy, where the amphiphilic tri-block poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) was used both as a reaction material and a template in an acidic media. Further…
Doping CeO(2) with Pd or Pt increases the oxygen storage capacity (OSC) and catalytic activity of this environmentally important material. To date, however, an understanding of the mechanism underlying this improvement has been lacking. We present a density functional theory analysis of Pd- and Pt-doped CeO(2), and de…
With the common application of nanoscale zinc oxide (nZnO) and significant potential for its release directly into aquatic environments, it is urgent to carry out research on ecotoxicological impact of nZnO. The characterization of nZnO, the amount of ˙OH in suspensions in the presence of light and the acute toxicity…
Ultra strong polyethylene fibers can be made by gel-spinning of Ultra High Molecular Weight Polyethylene (UHMWPE). Such fibers exhibit extraordinary properties. They show very high tensile strength and stiffness and low density. On the other hand, the axial and transverse compression strength is low. This is a large d…
Polyethylene terephthalate (PET) was depolymerized to monomer bis(2-hydroxyethyl) terephthalate (BHET) using excess ethylene glycol (EG) in the presence of metal oxides that were impregnated on different forms of silica support [silica nanoparticles (SNPs) or silica microparticles (SMPs)] as glycolysis catalysts. The…
Flexible mesoporous graphitic films with high conductivities were prepared by graphitizing the composite films of graphene oxide (GO) and nanodiamond (ND). After graphitization, ND was changed into onion-like carbon (OC) and GO was reduced to conductive graphene. In the graphitic films, OC nanoparticles were sandwiche…
Adding Si3N4 into green emitting Ca3Sc2Si3O12 : Ce3+ garnet phosphor generates an additionally red emission band peaking around 610 nm that are assigned to Ce3+ ions having N3− in their local coordination. The excitation spectrum of the red band consists of not only a distinct band at 510 nm of itself but also an inte…
AgInS2–ZnS nanoparticles with well-defined heterodimer structures were synthesized using a hot injection method. The emission spectra of the obtained heterodimers under UV excitation could be tuned by controlling the diffusion of Zn in AgInS2. The ZnS component in the heterodimers played an important role in improving…
Bulk single crystals of α-BaTeMo2O9 with dimensions up to 51 × 30 × 20 mm3 were grown successfully by a top-seeded solution growth (TSSG) method using TeO2-MoO3 mixture as a flux. High-resolution X-ray diffraction measurement on the (400)-faced plate indicates that the full-width at half-maximum (FWHM) of the rocking…
ABSTRACT: The general topic of this review is protein-based underwater adhesives produced by aquatic organisms. The focus is on mechanisms of interfacial adhesion to native surfa-ces and controlled underwater solidification of natural water-borne adhesives. Four genera that exemplify the broad range of function, gener…
In this review, reports, patents and recently published papers and documents on polyurethane recycling, especially chemical recycling methods, are investigated in order to find an adequate method for waste reduction, protecting the environment and preventing waste land filling. The recycling of polyurethane has always…
We demonstrate a robust approach to functionalize the upconverted luminescent NaYF4:Yb/Er nanocrystals with folic acid (FA)–chitosan conjugates for specific targeting and imaging of lung cancer cells. In this approach, the amine groups of FA–chitosan conjugates covalently reacted with the carboxyl groups located on th…