Materials Literature
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Several methods have been offered for silver nanoparticles production. A new method has been developed including shape-controlled synthesis of silver nanoparticles in different shapes. Dendrite, cubic, spherical and porous structures were formed by self-arrangement of the surfactant as a template under ultrasound radi…
We model quantitatively the chemical dynamics of terra rossa formation that we deduced earlier from new field and petrographic evidence. The key phenomenon is that authigenic kaolinite (a proxy for kaolinite solid solutions and other clays) replaces limestone at a downward-moving reaction front at the base of the exis…
Abstract In this article, we describe electrically conductive nanoblends containing poly(aniline‐ co ‐3‐ aminobenzoic acid) (PANABA), poly(styrene‐ alt ‐maleic acid) (PSMAC), and polystyrene. PANABA copolymers on a nanoscale were prepared under ultrasonic irradiation by the oxidative copolymerization of aniline and 3‐…
Abstract In this work, new steels (1#, 2#, and 3#) were developed for low‐temperature sulfuric acid dew point corrosion. The mass loss rate, macro‐ and micro‐morphologies and compositions of corrosion products of new steels in 10, 30, and 50% H 2 SO 4 solutions at its corresponding dew points were investigated by imme…
Solid-state synthesis and investigation of crystal structure and magnetic properties of Bi 0.86 La 0.14− x Sm x FeO 3 (0 ⩽ x ⩽ 0.14) ceramics were performed. It was found that a rhombohedral to orthorhombic phase transition took place in the series with decreasing average ionic radius of the substituting elements occu…
It is shown that both graphite oxide (GO) and oxidized graphene nanoribbons (OGN) can be safely reduced by using hydrogen iodide (hydroiodic acid). FT-IR spectroscopy and TGA-DTG were used to show that HI 67% is able to lead to a complete reduction of GO while HI 57% is less effective. In terms of FT-IR spectroscopy a…
Fundamentally, methanol represents one of the simplest molecules for understanding extended hydrogen-bonded networks, and from a practical perspective it constitutes a very important chemical feedstock. The interaction of methanol with transition metal surfaces is of relevance to many catalytic processes. Gold-based c…
An improved procedure has been developed for photodehydrocyclization of stilbenes for the synthesis of phenanthrenes and helicenes. This procedure involves the use of THF as a scavenger of hydriodic acid produced during iodine mediated photodehydrocyclization. The use of THF is advantageous due to its higher boiling p…
Since the experimental discovery of an easy method to produce graphene (Novoselov et al., 2004; 2005), there is a continuous rising of interest on this fascinating material. Due to its own peculiar electronic band structure, graphene is a promising material for the future electronic nanodevice industry. In any product…
Tree of a kind: An integrated artificial photosynthetic system is developed by reassembling raw materials from plants as support matrix for the encapsulation of porphyrins. The hybrids allow visible-light-driven regeneration of NADH and production of fine chemicals. The synthetic wood not only provides a microenvironm…
Abstract Poly(Lactic acid) (PLA)‐layered silicate nanocomposite films were prepared by solvent casting method. The films were irradiated with Co 60 radiation facility at dose of 30 kGy. The effect of γ irradiation on mechanical properties of the neat PLA and nanocomposites was evaluated by data obtained from tensile t…
The ferrocene-based trimethylsilyl chalcogenide reagents [FcC(O)OCH(2)CH(2)ESiMe(3)] (2, E=S, 3 E=Se, Fc=[Fe(η(5)-C(5)H(5))(η(5)-C(5)H(4))]) and [FcC(O)NHCH(2)CH(2) SSiMe(3)] (8b) have been synthesized. The reagents were reacted with solubilized transition-metal acetates to yield functionalized complexes and clusters,…
In this report electrostatic force microscopy (EFM) is used to study different peptide self-assembled structures such as tubes and particles. It is shown that not only geometrical information can be obtained using EFM, but also information about the composition of different structures. In particular we use EFM to inve…
Normal mode analysis is an important tool for studying the structure and dynamics of nanosized systems. The vibrational frequencies obtained can be used to relate observed spectra to the details of the molecular structure, dynamics and other thermodynamic properties. It is important to understand the energetic, stabil…
Abstract We present the results of using Raman molecular imaging and atomic force microscopy (AFM) investigation of the composition, stability, and photodegradation of polyelectrolyte multilayer microcapsules and coated microparticles containing copper–phthalocyanine and iron–phthalocyanine. The influence of laser lig…
Arc-discharge method was first used by Krastchmer and Hoffman to synthesize C 60 In the last two decades, it was widely used to prepare carbonwww.intechopen.com
A combination of x-ray diffraction, magnetization, and $^{75}\mathrm{As}$ nuclear magnetic resonance (NMR) experiments were performed on single-crystal EuFe${}_{1.9}$Co${}_{0.1}$As${}_{2}$. The strength of the hyperfine interaction between the $^{75}\mathrm{As}$ nuclei and the Eu${}^{2+}$ 4$f$ states suggests a strong…
Abstract The current distribution of carbon steel beneath intact organic coating exposed to 3.5% NaCl solution was investigated by the wire beam electrode (WBE) method. The electrochemical impedance spectroscopy (EIS) of individual electrodes with high current was characterized to analyze the behavior of the coating d…
While conjugated vegetable oils are currently used as additives in the drying agents of oils and paints, they are also attractive molecules for making bio-plastics. Moreover, conjugated oils will soon be accepted as nutritional additives for "functional food" products. While current manufacture of conjugated vegetable…
The fraction of dissociation processes fD for H2 on platinum that take place on low-coordinate sites of nanoparticles is strongly dependent on the gas temperature of the incoming molecules and on the diameter d of the nanoparticles (see picture). For high gas temperatures and large nanoparticles, dissociation occurs m…