Showing papers in "Materials Chemistry and Physics in 2011"

TL;DR: In this article, the surface of carbon felt electrodes has been modified for improving energy efficiency of vanadium redox flow batteries, and the effects of various surface modifications such as mild oxidation, plasma treatment, and gamma-ray irradiation were investigated at optimized conditions.

TL;DR: In this paper, thermal decomposition of ZnO and CdO nanorods without any catalyst at 350°C was used to synthesize a simple and low-cost method to prepare nanorod.

TL;DR: In this paper, a green synthetic route for the production of highly stable silver nanoparticles using aqueous garlic extract is reported for the first time, where the garlic extract components served as both reducing and capping agents in the synthesis of the nanoparticles.

TL;DR: In this paper, a new formulation based on natural rubber-PLA blends has been developed, where the processing windows, temperature, time, and rotor rate, and the rubber content have been optimized in order to obtain a blend with useful properties.

TL;DR: In this article, the effect of the ethyl acetate extract of Uncaria gambir on the corrosion of mild steel was investigated by weight loss measurement as well as potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques.

TL;DR: In this paper, a BiVO4-graphene photocatalyst was prepared by a facile one-step hydrothermal method and characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman Spectroscopy, XPS, and transmission electron microscopy (TEM) techniques.

TL;DR: In this paper, the effect of 2-((5-mercapto-1,3,4-thiadiazol-2-ylimino)methyl)phenol Schiff base (MTMP) on mild steel corrosion in 0.5 m HCl solution was studied.

TL;DR: In this article, composite nanofiber membranes were prepared by electrospinning from poly(vinylidene fluoride) (PVDF)−SiO2 blend solutions with different SiO2 contents.

TL;DR: In this paper, the properties of pure (crystal) and complex (product of corrosion) iron oxides, magnetite (Fe 3 O 4 ), hematite (α-Fe 2 O 3 ) and goethite (β-FeO·OH), were determined by means of molecular dynamics analysis (MDA) and instrumented indentation.

TL;DR: In this paper, the free ion Hamiltonian model and Judd-Ofelt theory have been used to analyze the spectroscopic properties of Dy3+ ions in lead fluorophosphate glasses.

TL;DR: In this paper, stable aqueous printable inks were formulated by using the combination of a triblock copolymer and high intensity focused ultrasound (HIFU) to overcome the strong agglomeration of the particles in dispersion medium.

TL;DR: In this paper, the surface microhardness, roughness and wettability of AISI 316L stainless steel resulting from surface mechanical attrition treatment (SMAT) are discussed.

TL;DR: In this paper, a solution cast of polyvinyl pyrrolidone (PVP) complexed with different weight percent ratios of KBrO4 salt was prepared by using solution cast technique and the glass transition temperature and relative percentage of crystallinity of these films were determined using differential scanning calorimetry (DSC).

TL;DR: In this paper, the synthesis of silver nanoparticles employing a shadow-dried Stevia rebaudiana leaf extract in AgNO 3 solution is reported, and it is shown that nanoparticles are spherical and polydispersed with diameters ranging between 2 and 50nm with a maximum at 15nm.

TL;DR: In this paper, the effect of partial replacement of polyethylene glycol polyol (PEG) by the prepared bio polyol on physical, mechanical, thermal conductivity, and thermal stability of polyurethane foam was studied.

TL;DR: In this article, the incorporation of reduced graphene oxide (rGO) in Co 3 O 4 matrix is systematically investigated through a chemical route for supercapacitors, and the morphology and electrochemical activity of the rGO/Co 3 o 4 composites are influenced significantly by the mass ratios of rGO to Co 3 o4.

TL;DR: In this paper, the effects of the addition of Zn element on the microstructures, mechanical properties and bio-corrosion properties of Mg-3Ca alloys are investigated.

TL;DR: In this paper, the synergistic effect of combining multi-walled carbon nanotubes and boron nitride (BN) flakes on thermally conductive epoxy composite was investigated.

TL;DR: In this paper, nano-ZnO nanoparticles were applied to 3.5 and 5.5-wt% NaCl solution for up to 60 days to investigate the nano-indentation properties of epoxy composites.

TL;DR: In this article, a systematic investigation has been carried out to study the tribocorrosion behavior of AISI 304 stainless steel under unidirectional sliding in 0.5 mM NaCl solution, using a pin-on-disk tribometer integrated with a potentiostat for electrochemical control.

TL;DR: In this paper, the role of channel layer composition on the electrical performance and stability exhibited by thin-film transistors was investigated by magnetron sputtering using ceramic targets of different compositions.

TL;DR: Morphological characterization using scanning electron microscopy showed that the aligned nanofiber diameter distribution obtained by electrospinning of polymer blend increased with the increase of chitosan content which was similar to that of randomly oriented nanofibers.

TL;DR: In this paper, a graphitic carbon nitride with a structure based on heptazine blocks was synthesized starting from melamine and uric acid, which can be assimilated to an in situ chemical vapor deposition (CVD).

TL;DR: In this paper, the physicochemical properties of regenerated cellulose films have been characterized by scanning electron microscopy, and the effects of experimental parameters, such as reaction temperature, additives on the solubility and degree of polymerization (DP) were also studied, which can attribute to the fact that the beta-1,4-glycosidic bond of the cellulose chains cannot be broken because of the relative low concentration of Cl(-).

TL;DR: In this paper, polyvinyl alcohol (PVA)/polyaniline (PANI) thin films were chemically synthesized by adopting two step process: initially a thin layer (200nm) of PVA was spin coated by using an aqueous PVA solution onto fluorine doped tin oxide (FTO) coated glass substrate, afterwards PANI was chemically polymerized from aniline monomer and dip coated onto the precoated substrate.

TL;DR: The present study led to the conclusion that copper nanoparticles are toxic to A549 cells in a dose dependent manner.

TL;DR: In this paper, a rapid method was developed to prepare organic montmorillonite (organo-MMT) using three novel Gemini surfactants by microwave irradiation of 1-h, which was more effective than conventional heating method of 8-48h.

TL;DR: The microstructures, hardness and corrosion behavior of high chromium cast irons with 20, 27 and 36.%Cr have been compared as discussed by the authors, and the type of the secondary carbide is M 7 C 3 with stoichiometry as (Cr 3.37, Fe 3.63 )C 3, (Cr 4.75, Fe 2.25 ), (Cr 5.55, Fe 1.45 )C3, respectively.

TL;DR: In this paper, two types of unfunctionalized and functionalized multi-wall carbon nanotubes (MWCNTs) were prepared to be applied in fabrication of MWCNT-ZnO nanocomposite thin films with various MWCNT contents.

TL;DR: In this article, a modified sol-gel method was used in the preparation of (in wt.%) (100 − x) polyvinyl alcohol (PVA)/x ZnO nanocomposite films, with x = 0, 1, 2, 3, 4, and 5.