Materials Literature
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In this study, we investigated the electrochemical behavior of various types of activated carbons with different properties, such as the specific surface area and pore size distribution in an electrolyte containing TEA-BF4 and in that containing a spiro-type quaternary ammonium salt (SBP-BF4). EDLC cells using 1 M SBP…
Research Article| January 01, 2010 An Efficient Cluster Expansion Method for Binary Solid Solutions: Application to the Halite-Silvite, NaCl-KCl, System Victor Vinograd; Victor Vinograd Institute of Geosciences, University of Frankfurt, Frankfurt a.M., Germany, v.vinograd@kristall.uni-frankfurt.de, b.winkler@kristall.…
Herein we describe an unusual localized corrosion that initiates on large {111} surfaces and ends with the complete fragmentation of the gold nanoplates, which is expected to develop into a specific method for processing large metal nanomaterials into smaller ones with desired shapes.
We develop a computer model of drug diffusion from polymer core–shell nanoparticles. In particular, our coarse-grained model simultaneously captures the dynamics of the polymer nanoparticle and the diffusion of the encapsulated drug. This allows us to investigate the drug release from nanoparticles with different shel…
In order to clarify the physics of the crossover from a spin-density-wave (SDW) Mott insulator to a charge-density-wave (CDW) Peierls insulator in one-dimensional (1D) systems, we investigate the Hubbard-Holstein Hamiltonian at half filling within a density matrix renormalisation group (DMRG) approach. Determining the…
A new family of quaternary fluoro-antimonides A(5)Cd(2)Sb(5)F (A = Sr, Ba, Eu) and oxyantimonides Ba(5)Cd(2)Sb(5)O(x) (0.5<x<0.7) have been synthesized and structurally characterized. The title compounds are isotypic, and crystallize with a novel structure type in the orthorhombic space group Cmcm (Z = 4, Pearson symb…
Various concentrations of anionic surfactant, sodium dodecyl sulfate (SDS), were used to control the growth of calcium carbonate crystals. The obtained calcium carbonate particles were characterized by Fourier transform infrared spectrometry (FT-IR), X-ray diffraction (XRD), field emission-scanning electron microscopy…
Free-standing, highly ordered porous aluminium oxide templates were fabricated by three-step anodization in oxalic, sulfuric or phosphoric acid solutions, followed by dissolution of the aluminium substrate in HgCl(2). Opening of the pore bottoms on the barrier layer side of these templates was carried out by using che…
The present study describes the texture changes in ‘nematic’ N-(4-methoxybenzylidene)-4-butylaniline (MBBA) by in situ synthesis of silver nanoparticles in the system without any external reducing or stabilizing agents. Optical polarizing microscopy (OPM), differential scanning calorimetry (DSC), nuclear magnetic reso…
The crystal and molecular structure of 2-hydroxy4-methylbenzenesulfonic acid dihydrate C6H3(CH3)(OHSO− 3 H5O2 + (I) was studied by X-ray diffraction and vibrational spectroscopy. The compound crystallized in the monoclinic crystal system; crystal data: a=10.853(2) Å, b=7.937(2) Å, c=12.732(3) Å, β=112.13(3)°, V=1015.9…
Novel complementary split ring resonator (CSRR) is introduced to increase the stop bandwidth. Despite of their exotic behavior due to negative permittivity, their performance is limited by their stop bandwidth. The orientation of CSRR etched on the ground has strong coupling that can be altered for the increased stop…
Large-scale La(OH)3 nanorod/nanotube arrays have grown directly on Cu substrates via a template-free electrodeposition and selective etching process.
The superwetting or dewetting properties of a silicon nanowire (SiNW) surface are studied. The SiNW arrays were grown vertically on SiO 2 or Si substrates by a vapor–liquid–solid process. After a critical length or roughness, the nanowire surface exhibits superhydrophilic property with a contact angle close to 0°. How…
The biopolymers dextran and xyloglucan were used to attenuate structural development of a range of metal oxide materials. Dextran was used to prepare catalytic iron, iron–gold, and cerium–copper oxide porous sponges composed of joined nanoparticles. Zinc oxide sponges and nanoparticles coated with <5 nm gold particles…
Corrosion performance of zinc coatings containing aluminum in excess of 5% was assessed in modified salt-spray tests. X-ray diffraction studies indicated that the corrosion products consisted mainly of simonkolleite Zn5(OH)8Cl2·H2O, hydrozincite Zn5(OH)6(CO3)2, and zinc aluminum carbonate hydroxide hydrate Zn6Al2(OH)1…
Exact analysis of spin crossover in infinite elastic chain of two-spin exchange clusters was performed theoretically beyond mean-field approximation. Statistical mechanics of the system was exactly calculated by means of the transfer matrix technique. A possibility of spin-Peierls-like magneto-structural transition in…
Herein we describe the unique luminescent behavior observed in [Ce(IV)(W(5)O(18))(2)](8-) clusters and examine the photophysical properties using density functional theory.
Bent In2O3(ZnO)n/ZnO (n = 4 and 5) heterostructure nanobelts were successfully synthesized by a simple thermal vapor method for the first time, using Au as a catalyst. The heterostructures were characterized by transmission electron microscopy and nanoprobe X-ray energy dispersive. The relationship between the strain…
The Environmental Impacts of Fire-Fighting Foams Extinguishing foams are commonly used for extinguishing the fire of flammable liquids, whereby their insulating, choking and quenching effects are exploited. The purpose of the paper is to consider and compare the foams currently used in fire departments, regarding main…
A new heterometallic Mn/Cr molecular wheel complex has been synthesized using zerovalent manganese, Reineckes salt, ammonium thiocyanate and triethanolamine (H(3)tea) as starting materials. The compound [Mn(3)Cr(4)(NCS)(6)(Htea)(6)] (1) has been characterized in terms of its electrochemical, IR and EPR spectroscopic a…