Materials Literature
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In order to harvest the solar energy more efficiently, a novel photocatalyst was designed by introducing an organic dye sensitizer, copper phthalocyanine (CuPc), into an inorganic semiconductor Bi(2)WO(6). This composite photocatalyst exhibited an improved photo-response in the whole visible spectrum and even the near…
Monodisperse porous hollow nanospheres with superparamagnetism were prepared via a hydrothermal reaction based on solid Fe3O4 nanospheres. By investigating the effect of carbon precursors, the kinds and amounts of structure-directing agents and the reaction time on the formation of hollow spheres, it was proposed that…
Selective synthesis of titanium dioxide (TiO2) polymorphs including anatase, rutile, brookite and TiO2(B) by solvothermal treatment of water-soluble titanium complexes is described with a special focus on their morphological control. The utilization of water-soluble titanium complexes as a raw material allowed us to e…
Spin hyperpolarization can be coherently transferred to other nuclei in field-cycling NMR experiments. At low magnetic fields spin polarization is redistributed in a strongly coupled network of spins. Polarization transfer is most efficient at fields where level anti-crossings (LACs) occur for the nuclear spin-states.…
Bis-triazolyl indoleamine-based chemosensors that respond to copper, and then fluorine as presumably facilitated by the high-affinity interaction between F(-) and the NH-proton of indole, are reported. Remarkable fluorimetric as well as colorimetric alternations upon the specific ligand-ion recognitions were observed.
Converting a practically limitless energy source, such as sunlight, into chemical energy with very little or no carbon footprint will pose a major challenge in the coming decades. The technology exists to convert solar energy into chemical fuels, such as hydrogen, through overall water splitting to produce hydrogen an…
We present an overview of the recent advances pertaining to microelectrode arrays (MEAs) constructed from carbon-based nanomaterials, especially aligned carbon nanotubes (CNTs) and carbon nanofibers (CNFs). The electrochemical and chemical activities of carbon nanomaterials depend on the microstructures, especially th…
We report the synthesis and characterization of new V2O5/Al2O3-MgO catalysts and their application in oxidative dehydrogenation and epoxidation reactions. The materials were prepared by wet impregnation under excess acid conditions. Anchoring of the desired species on the support occurs via an exchange reaction betwee…
A functional 1D photonic crystal system built from a mesoporous mixed oxide multilayer is proposed that is able to switch from transparent to Bragg reflector states (characterized by a photonic stop band in the visible range) and vice versa by means of adsorption/desorption of liquid in/from the system. One-pot co-con…
The electrocatalysis of Ag/Ni bimetallic alloys to glucose oxidation was studied. It was found that the presence of Ag and Ni in the alloys facilitates each other's electrocatalysis toward glucose oxidation, exhibiting an interesting synergistic effect. At about 0.7 V vs SCE, the electrocatalysis of Ag toward glucose…
The hydrothermal method provides an effective reaction environment for the synthesis of nanocrystalline materials with high purity and well-controlled crystallinity. In this work, we started with various sizes of commercial TiO 2 powders and used the hydrothermal method to prepare TiO 2 thin films. We found that the s…
Electrospun nano-felt consisting of overlaid TiC/C composite nanofibers was surface-decorated with Pt nanoparticles (Pt NPs) for use as highly efficient and cost-effective counter electrode (CE) in dye-sensitized solar cells (DSSCs). In the nanofibers, the self-generated TiC crystallites (~70 wt%) with sizes of ~20 nm…
Novel drug delivery system aims to deliver the drug at a rate directed by the needs of the body during the period of treatment, and target the active entity to the site of action. A number of novel drug delivery systems have emerged encompassing various routes of administration, to achieve controlled and targeted drug…
In this research, dried acetone:chloroform extract of aerial parts of E. denticulata as one of the endemic plants to Iran, afforded a number of triterpenes and steroids including: betulin, 24-methylene-cycloart-3-ol, cycloart-23Z-ene-3β,25-diol, cycloart-23E-ene-3β,25- diol, ergosta-8,24-dien-3-ol (obtusifoliol) and b…
Co3O4 nanosheets were prepared by selectively dealloying CoAl alloys at room temperature, and their thicknesses could be easily controlled to be ∼6 nm, ∼100 nm and ∼500 nm. Then they were employed as anodes for lithium-ion batteries to study the electrochemical performance as a function of the thickness of the nanoshe…
CoFe2O4 porous nanosheets (CFOPNSs) on F-doped SnO2 coated glass (FTO) substrates with 30.5 nm average pore diameter were prepared through a template-free electrochemical method from aqueous solution. The CFOPNSs exhibit obvious absorption in the visible-near infrared light range, and obvious photocurrent responses un…
Gels that feature high internal porosity and have both high elasticity and ductility have potential to provide immediate load support and enable subsequent tissue regeneration of damaged soft tissue if combined with cells. Herein, we report results from a recent investigation of novel poly(methyl methacrylate-co-metha…
BACKGROUND: Inhaled nanoparticles have been reported in some instances to translocate from the nostril to the olfactory bulb in exposed rats. In close proximity to the olfactory bulb is the olfactory mucosa, within which resides a niche of multipotent cells. Cells isolated from this area may provide a relevant in vitr…
Glutaredoxins are small redox proteins able to reduce disulfides and mixed disulfides between GSH and proteins. Synechocystis sp. PCC 6803 contains three genes coding for glutaredoxins: ssr2061 (grxA) and slr1562 (grxB) code for dithiolic glutaredoxins while slr1846 (grxC) codes for a monothiolic glutaredoxin. We have…
Life is supported by cellular reactions driving conformational, folding and unfolding macromolecular movements with ionic and aqueous exchange. Here we review the state of the art of the electrochemistry of conducting polymers as elemental material models of biological reactive gels. The different experimental methodo…