Materials Literature
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Pd-Ag shell catalysts impregnated with two different ionic liquids show considerable improvements both in ethylene selectivity and reduced ethane formation in the selective hydrogenation of acetylene under tail-end conditions.
In this paper, thermal behavior of calcite as raw material of CaO-based expansive agent was investigated. The products were characterized by using differential thermal analysis (DTA), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR) and X-ray powder diffraction (XRD). DTA curves show t…
Owing to their noninvasive nature, coronary artery stents have become popular demand for patients undergoing percutaneous coronary intervention. Late restenosis, in-stent restenosis, and late thrombosis, all mediated by the denuded endothelium, represent the most recurrent failures of vascular stent induction. Higher…
Single-crystalline, high-quality branched ZnTe-core/ZnO-branch nanoheterostructures were synthesized by an in situ strategy in an environmental scanning electron microscope. Composition and structure characterization confirmed that ZnO nanowires were perfectly epitaxially grown on ZnTe nanowires as branches. Noticeabl…
We report molecular fluorescence enhancement of free-standing nanoporous gold in which the nanoporosity can be arbitrarily tailored by the combination of dealloying and electroless gold plating. The nanoporous gold fabricated by this facile method possesses unique porous structures with large gold ligaments and very s…
Collagen I is the major structural protein in mammals where it exhibits highly organized fibrillar distributions in connective tissues. In vitro, acidic solutions of collagen I display lyotropic liquid crystal organization. These concentrated organized liquid phases can be stabilized by a pH increase to generate in vi…
Cobalt oxides have been extensively used as conductive additives for Ni-MH batteries. We report in this paper the performances of an original nanometric cobalt oxide, close to Co 3 O 4 , as electrode material for hybrid supercapacitors. This spinel type phase contains hydrogen, lithium, cobalt vacancies, and especiall…
Polyhydroxybutyrate (PHB) is widely used as a biomaterial in medical and tissue-engineering applications, a relatively high crystallinity limits its application. Blending PHB with ethyl-cellulose (EtC) was readily achieved to reduce PHB crystallinity and promote its degradation under physiological conditions without u…
The degree of degradation in a polymer composite is directly related to the amount of moisture it absorbs. Plasticization and swelling are among the undesirable consequences of absorbed water. This effect is rather important in materials under severe requirements. The use of these composites as coatings requires study…
Carboplatin and oxaliplatin are commonly used platinum anticancer agents that are sold as ready-to-use aqueous infusion solutions with shelf lives of 2 and 3 years, respectively. The observed rate constants for the hydrolysis of these drugs, however, are too large to account for their long shelf lives. We here use ele…
A facile and versatile synthesis method, called the partitioned cooperative self-assembly process (PCSA process), is developed to prepare mesoporous SBA-15 silicas using P123 surfactant as template and cheap sodium silicate (SS) as silica precursor. It is demonstrated for the first time that by simply partitioning the…
Luminescent down-shifting (LDS) as a purely optical approach increases a solar cell's ultra-violet to blue response by shifting short-wavelength light to longer-wavelengths where the external quantum efficiency (EQE) of solar cells is higher. We propose a simple, universally applicable, optical model to analyze EQE sp…
A facile one-pot method was reported to fabricate noble metal nanoparticles encapsulated in silica hollow nanospheres with radially oriented mesopores, and the anionic amino acid surfactant, N-lauroylsarcosine sodium, played multiple roles: reducing agent, stabilizer, emulsion droplets and mesopore template.
Transparent nanocomposites have been developed which consist of nanocrystals embedded in an organic matrix. The materials are comprised of up to 60% by volume of 7–13 nm crystals of the phosphor CexLa1−xF3, and are greater than 70% transparent in the visible region at a thickness of 1 cm. Consistencies of the nanocomp…
This study explores a bifunctional hydrocarbon, which has two non-planar dibenzocycloheptatriene moieties linked by three cumulative C–C double bonds. This flexible conjugated molecule can adopt two conformations, namely, syn and anti, in its crystals. Of particular interest is that the molecule’s solids not only func…
Cavitation often involves an abrupt phase change phenomenon. This phenomenon causes cavitation erosion on the material surface. In particular, violent bubble collapse near the material surface causes severe erosion. Numerical simulation is a powerful approach by which to clarify the high-speed, complex bubble collapse…
A series of K2NiF4-type compounds, La2−xPrxNiO4 (x = 0, 0.6, 1.0, 1.4, and 2.0), were synthesized by solid state reaction for use as cathodes in an intermediate-temperature (500–700°C) solid oxide fuel cell (IT-SOFC). La2−xPrxNiO4 (x = 0 and 0.6) crystallize in the Fmmm space group, while La2−xPrxNiO4 (x = 1.0, 1.4, a…
The synthesis and catalytic application of supported CuAu is discussed. Different thermal treatments of a dried precursor of copper nitrate and tetrachloroauric acid on silica lead to catalysts with significantly different structures and properties. Direct calcination gives a catalyst which contains very large gold en…
Sr2CeO4:Eu3+ phosphors containing various activator contents have been systemically investigated by temperature-dependent fluorescent method. The temperature-dependent photoluminescence spectra and the integrated emission intensity of Sr2CeO4:Eu3+ at different temperatures indicate that these samples can exhibit disti…
Gold nanoparticles (AuNPs) have always been considered as superior tools for biosystem applications owing to their characteristic optical properties in form of surface plasmon resonance and amperometric properties with very low or no immediate toxicity. Biosystem application based tools have been designed based on man…