Materials Literature
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A bi-layered PPy film consisting of an inner layer doped with Keggin-structure anions of PMo12O403- and HPO42- (PPy-PMo12) and an outer layer doped with organic anions of dodecyl sulfate (PPy-DoS) exhibited a self-healing property when coated on steel. When a defect was introduced into the PPy-coated steel immersed in…
Abstract Conductance switching of a diarylethene–gold nanoparticles network was demonstrated by cyclization reaction induced with chemical oxidation and cycloreversion reaction with photoirradiation. The electrochromic reaction enables the cyclization reaction of the diarylethene whose photocyclization is strongly que…
Homogeneous nanostructured Si3N4-TiN composite powder was obtained by nitration of a TiSi2 powder precursor in a nitrogen flow. Mechanoactivation of titanium disilicide increases the nitration rate and reduces the temperature of formation of the Si3N4 and TiN. The properties of hot pressing (HP) and spark plasma sinte…
Transparent Pr-doped YAG nanoceramics composed of grains with an average size of about 42 nm, were fabricated with the Low Temperature High Pressure (LTHP) sintering technique using the corresponding nanopowders as the starting materials. The structure of the nanoceramics was analyzed by X-ray diffraction (XRD). The e…
Abstract Carbon spheres were successfully prepared via hydrothermal treatment of glucose, and spherical size (0.5–8 μm) could be tuned by adding different amount of oxalic acid. The surface of obtained carbon spheres contains hydrophilic functionalities including –OH, –C=O, and COOH groups, which were not destroyed by…
CeF3 and CeF3:Tb3+ water soluble nanoparticles (NPs) were prepared by wet chemistry, and their structure and luminescence properties were studied systematically. The results of XRD indicate that the obtained CeF3 and CeF3:Tb3+ NPs have a hexagonal structure with the P 6(3)/mcm space group. The average size of CeF3 NPs…
A core-shell multilayered composite microsphere with electric and magnetic features was designed and prepared on the basis of mutilayered fabrication. This kind of microspheres was obtained by introducing a rod-like conductive polyanilline (PANI) or its derivatives onto the surface of magnetic Fe3O4 nanoparticles with…
Two silicas with different particle sizes have been synthesized by the Stöber method. The particles have been functionalized with methacryloyl groups. In situ emulsion polymerization of butyl acrylate and methyl methacrylate in the presence of functionalized silica particles was performed. The ratio of butyl acrylate…
This report describes a commercial plasma reactor system for the GHG-free production of hydrogen enriched natural gas (HENG) using natural gas as a feedstock. The process demonstrated stable operation for the production of 20 vol% HENG fuel. The specific energy requirements of the process were found to be competitive…
In order to understand the stable passivity of stainless steels, the critical factors including the mechanism of reductive dissolution relating to breakdown and repair of passive film have been reviewed based on recent evidence. The Cr enrichment in the passive film by two stage process and alloying effect are discuss…
Water dispersible Fe3O4 nanoparticles (coated with Poly Vinyl Pyrolidone (PVP) and Poly oxy ethylene 25-propylene glycol stearate (POES)) and complexed with Doxorubicin has been prepared and characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). The…
Trace elements in Group IIIA-VA activate aluminum alloys anodically in chloride environment. The present focus is on trace element Sn. Surface segregation by heat treatment and resulting surface activation on model AlSn alloys, containing 30 to 1000 ppm of Sn, were characterized, respectively, by use of surface-analyt…
Here we demonstrate the preparation of samarium doped yttrium oxide nanoparticles using samarium chloride as a samarium source by co-precipitation method. The samarium doped yttria nanoparticles are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron micr…
The effect of tungsten additions on the oxidation behavior of zirconium diboride-based ceramics was studied. Four mole percent tungsten carbide was added to ZrB2. The oxidation behavior was studied using thermal gravimetric analysis and isothermal testing in flowing air. Upon heating to 1500{degree sign}C, the mass ga…
It is believed that studies on the early hydroxyapatite (HAp) deposition on nano-sized substrates may possibly allow us to understand the formation mechanisms of biominerals at the molecular level. In this study, bacterial cellulose (BC) nanofibers were phosphorylated and used as nano-sized templates for early mineral…
Paclitaxel is one of the anticancer agents most often used in clinical oncology practice for the treatment of ovarian, breast and non-small cell lung cancers. Nanoengineered polymeric capsules (NPCs) represent a new and very effective tool for the encapsulation and smart release of different compounds. In present work…
Diamonds like carbon (Ag-DLC) films of nine Ag contents were deposited on (100) Si substrate in a mid-frequency dual-magnetron system. The influence of Ag content and nanograin size on the microstructure, mechanical properties and sliding tribological behaviors of the films has been investigated. It is found that (i)…
The solubility of calcium in calcium chloride - calcium oxide is of interest in processes reducing metal oxides in calcium chloride based salt systems. The solubility of calcium in calcium chloride was measured as 2.7mol% at 1073K. This reduced to 0.4mol% at a calcium oxide content of 9.0mol%. Experimental data for th…
The accelerated oxidation of metals and alloys by a thin surface film of fused salt is controlled by the local salt (acid-base) chemistry and oxidizing potential at the salt/scale interface, as can be monitored using ec surface probes. The solubility of chromium oxide in fused sodium sulfate as a function of melt chem…
Two different dimensional inorganic–organic hybrid heterometallic sulfide, [Ni(pda)2]Cu4Sb2S6 (1) and [Ni(dien)2]CuSb3S6 (2) were obtained by using 1,2-propanediamine (pda) and diethylenetriamine (dien) as the ligand, respectively.