Showing papers in "Materials Letters in 2012"

TL;DR: In this article, the authors synthesize a zeolitic imidazolate framework (ZIF) material for the first time in aqueous solution at room temperature and investigate its stability up to 350°C and 5 days in boiling methanol.

TL;DR: Copper nanoparticles synthesized using modified polyol method by the reduction of copper acetate hydrate in the presence of Tween 80 showed more inhibitory activity in bacteria than the fungus and it showed more zone of inhibition in E.coli than C. albicans.

TL;DR: In this article, high quality fluorescent carbon dots have been synthesized through low-temperature carbonization and simple filtration using watermelon peel, a waste and reproducible raw resource, as a novel carbon resource.

TL;DR: A green synthetic method for silver nanoparticles using Ficus benghalensis leaf extract which acts as a reducing and capping agent was reported in this paper. But this method was not suitable for the use of nanoparticles in medical applications.

TL;DR: In this article, tuned metal organic frameworks (MOFs) are used as electrodes for supercapacitors with high surface area, tailored pore size and good electrical conductivity.

TL;DR: In this paper, aqueous silver ions when exposed to the leaf broth of Arbutus unedo were reduced and stabilized over long periods of time resulting in the green synthesis of surface functionalized silver nanoparticles.

TL;DR: In this article, the size and microstrain of NiO nanoparticles were calculated using Williamson-Hall plots and compared with the results obtained from the Scherrer equation, showing that the straight line obtained in the Williamson-hall plotting shows the homogeneity of the nanoparticles.

TL;DR: In this article, the state-of-the-art achievements regarding the doping of graphene sheets and nanoribbons are summarized and the perspectives and future research related to doped graphenes are discussed.

TL;DR: Alga Tetraselmis kochinensis is used in the intracellular synthesis of gold nanoparticles of dimensions 5–35 nm, which are more concentrated upon the cell wall than on the cytoplasmic membrane.

TL;DR: In this paper, an undoped ZnO film was obtained at ambient temperature using magnetron sputtering and further annealed in vacuum and oxygen atmosphere, and a (103) texture was observed on the surface of as-deposited (002)-preferred Zn-O film.

TL;DR: In this article, a novel biological route for the synthesis of TiO 2 NPs was demonstrated by using Eclipta prostrata leaf extract for the biosynthesis of titanium dioxide nanoparticles.

TL;DR: In this paper, a cone calorimetry test was conducted on polyvinyl alcohol (PVA) and graphene nanosheets to evaluate their flame retardant properties.

TL;DR: The thermal conductivities of the composites with 20-wt.% glass fibers at 300°C and 600°C were 0.025 and 0.030 W/(m K) respectively.

TL;DR: In this paper, a modified sol-gel method was used to synthesize titanium dioxide (TiO2) nanoparticles with different ratios of anatase to rutile transformation, and the optical properties were investigated by UV-vis diffuse reflectance spectrophotometry.

TL;DR: The pigment, C-phycoerythrin (C-PE) extracted from the marine cyanobacterium, Phormidium tenue NTDM05 was used to synthesize CdS nanoparticles, characterized adopting UV–Visible spectrum, Fourier transform infra-red spectrum, EDAX and transmission electron microscopy.

TL;DR: A new type of patented biodegradable biomedical magnesium alloy Mg-Nd-Zn-Zr (hereafter, denoted as JDBM) was prepared in this article.

TL;DR: In this paper, the synthesis of silver nanoparticles (AgNPs) has been demonstrated using a metabolically versatile actinobacteria Rhodococcus sp. by reducing aqueous silver nitrate.

TL;DR: In this article, a dynamic mask based on a digital mirror array which projects blue light (light emitting diodes with a wavelength of 460 nm) onto the resin was used to determine the mechanical properties of sintered bulk samples (biaxial strength) and cylindrical cellular structures (compressive strength).

TL;DR: In this paper, nano-sized nickel oxides have been synthesized in a water-in-oil microemulsion and the as-synthesized samples were characterized by powder X-ray diffraction (XRD), transmission electronic microscopy (TEM) and nitrogen adsorption/desorption.

TL;DR: In this article, a facile sonochemical method was developed for preparing colloidal silver nanoparticles (Ag-NPs) in aqueous gelatin solutions, and the effect of the reducing agent and Ag + concentrations, ultrasonic time, and ultrasonic amplitude on the particle size has been investigated.

TL;DR: In this article, the effect of alkali treatment on the composition and structure of Napier grass fibers was studied by chemical, FTIR and solid-state 13 C NMR methods.

TL;DR: In this paper, the chitosan deposits on stainless steel AISI 316 L were analyzed and the coating quality (thickness, defectiveness, corrosion protection ability) was seen to depend on the electric field used for EPD.

TL;DR: In this paper, the effects of additional iron (Fe) as a result of dilution from the steel substrate were investigated and it was found that for Fe contents of up to around 25 wt, chromium borides with higher Fe fractions could form but further increase of the Fe content to over 40 wt% entirely suppressed the precipitation of primary Cr borsides.

TL;DR: In this article, a facile hydrothermal route was used to obtain Co3O4@graphene nanocomposite, which was then used for supercapacitors.

TL;DR: In this paper, a green synthesis of TiO 2 nanoparticles by using 0.3% aqueous extract prepared from latex of Jatropha curcas L was presented.

TL;DR: In this article, a homogeneous anchoring of TiO2 nanoparticles on graphene sheets was achieved via esterification between hydroxyl groups of the nanoparticles and carboxylic groups of graphene acid.

TL;DR: In this paper, the synthesis of silver nanoparticles (AgNPs) by green synthesis that has advantages over conventional methods involving chemical agents associated with environmental toxicity was investigated. But the results were promising and rapid in the production of silver nano-articles with a surface plasmon resonance occurring at 430nm.

TL;DR: In this paper, the authors used precipitation method to synthesize CuO nanoparticles and obtained a high surface area of 143.7 m 2 /g which is a considerable surface area.

TL;DR: Graphene/polyaniline nanocomposite was synthesized using in situ polymerization of aniline monomer in the presence of graphene sheets under acid conditions as discussed by the authors.

TL;DR: In this paper, a hybrid process combining plasma electrolytic oxidation (PEO) and electrophoretic deposition (EPD) was used to develop a composite MgO/hydroxyapatite composite coating on AZ31 magnesium alloy in order to control its biodegradability.