Materials Literature
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Phosphotungstic acid (PTA) was successfully supported on synthesized mesoporous carbon (MC) through impregnating method to yield a series of PTA/MC catalysts, the content of PTA from 16 to 43 wt %. The catalysts were characterized by FTIR spectroscopy, X-ray diffraction, N2 adsorption-desorption isotherm tests and tra…
Fluorescent nanocrystals composed of semiconductor materials were first introduced for biological applications in the late 1990s. The focus of this review is to give a brief survey of biological applications of quantum dots (QDs) at the single QD sensitivity level. These are described as follows: 1) QD blinking and bl…
This paper deals with thermal-plastic analysis for the metal honeycomb structure. The heat transfer equation and thermal elastoplastic constitutive equation of a multilayer panel are established and studied numerically using ANSYS software. The paper elucidates that only the outer skin produces easily plastic deformat…
Wool fiber shows excellent moisture absorption and water permeation properties, which are due to its hierarchic matrix branching channel net widespread inside the fiber. The fractal derivative method is employed to build a model for predicting water permeation through the fiber. The results show that both the water pe…
The carboxylated short multiwalled carbon nanotubes (Sh‐MWCNT‐COOH) were first modified by isatin derivative to form Sh‐MWCNT‐Amide and then by hydrazine to produce Sh‐MWCNT‐Spiro. All products were characterized by the Fourier transform infrared spectroscopy, Raman spectroscopy, scanning electron microscope, elementa…
We report a unique strategy for efficiently exfoliating large size and high quality single-layer graphene directly from graphite into DMF dispersions by growing ZnO nanorod arrays between the graphene layers in graphite.
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A novel aldehyde-bearing trithiocarbonate has been synthesized and reacted with carbon nanostructures with different dimensionalities (nanotubes, fullerenes, graphite). The decoration of these carbon nanostructures with trithiocarbonate moieties should provide a powerful tool for the design of advanced carbon nanofill…
K4Fe4P5O20 shows an interesting natrolite-like structure with a spin-tetrahedron lattice built by mixed valence Fe ions. Single crystals of the title compound are successfully grown by the flux method using KF as flux. Magnetic results combined from magnetic, heat capacity, and (57)Fe Mössbauer spectra measurements sh…
We report ultrasonication-induced fibril-formation by a bolaform peptide, 1. While undisturbed cooling of hot THF solution of 1 led to the formation of microcrystals, bath-sonication of a similar solution resulted in predominant fibrillation with concomitant gelation. Spectroscopic studies indicated that 1 assembled p…
We use thermal carbonization with acetylene and nitrogen to treat hydrothermally grown ZnO nanorods on silicon substrates. The method is found to be strongly temperature dependent. Treatment temperatures below 800 °C do not induce any morphological changes of the rods, while temperatures above 800 °C cause significant…
In this study, it is investigated the synthesis and characterizations of polymerizable vinyl sugars. Carbohydrate containing polymers were synthesized via free radical polymerization. Thermal behavior of polymer derivatives was analyzed by using DSC and TG. Molecular weight dispersion of polymer derivatives was also a…
Excess iron in Fe 1+x Se superconductor plays a crucial role in the observation of superconductivity in this material. We have investigated the effect of off-stoichiometry at the Fe site in Fe 1+x Se 0.5 Te 0.5 ( x = -0.01, 0.01 and 0.03) superconductor through magnetization, electrical transport and specific heat mea…
In the present work we report the preparation and photoluminescence characteristics of Dy3+ doped borate phosphor K2Al2B2O7:Dy3+. The fine polycrystalline powder samples of K2Al2B2O7:Dy3+ has been prepared by a novel combustion technique. This method is based on the exothermic redox reaction involves, metal nitrates a…
Lophocereus schottii is a Mexican cactus known as garambullo whose bark is used for the treatment of cancer, diabetes, ulcers, sores, stomach disorders and tuberculosis. The aim of this study was to evaluate the cytotoxic effect of the ethanolic extract of bark of L. Schottii. To assess these effects we established a…
Ceramic compositions [Ba(Nd0.1Ti0.8Nb0.1)O3](1-x) [Na0.5Bi0.5TiO3]x with x = 0.0, 0.25, 0.40, 0.50, 0.55, 0.60, 0.65 and 0.70 were prepared by modifying the relaxor dielectric material Ba(Nd0.1Ti0.8Nb0.1)O3 with ferroelectric Na0.5Bi0.5TiO3 using conventional solid state sintering route. The X-ray diffraction studies…
a a a b ( a 014010) ( b 350108) DFT DFTU Ca, Ba, Sm Zr CeO 2 . , , ; , ; , CeO 2 , Zr Sm CeO 2 , Fermi ; CeO 2 , Ca 2 Ba 2 Ce 4 , Fermi ; CeO 2 Zr CeO 2 Ce 3 , Ce4f O2p , CeO 2 ; Ca, Ba Sm CeO 2 Ce 4 . NEB , , ; Ca, Ba, Sm Zr , CeO 2 ; , Ba , , Ba.
Sodium lead slag, generated during secondary lead production, is characterized as hazardous waste. The aim of the study was to investigate leaching mechanism and behaviour of lead and arsenic from sodium lead slag previously stabilized/solidified in concrete using additives: MgO, CaO, Ba(OH) 2 and gypsum. The influenc…
Hydrophobic surface can be achieved by synergistic effect of lowering of surface energy and increase in surface roughness. Present work emphasizes on the development of thin hydrophobic sol-gel coatings on aluminium substrate using a long chain C-16 silane precursor i.e., Hexadecyltrimethoxysilane (HDTMS) crosslinked…
Multiferroics in which ferroelectric and ferro(antiferro-) magnetic (and/or ferroelastic) properties are simultaneously combined in one material are a subject of intensive research due to prospective applications as, e.g. next-generation memory storage materials [11]. The Aurivillius phases of the Bi4Ti3O12-BiFeO3 sys…