Materials Literature
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A zinc-iron layered double hydroxide (Zn-Fe LDH) with sulfate as the interlayer ainon has been prepared by the coprecipitation method. The LDH was dehydrated in three steps below 300°C and transformed to the amorphous phase. The recrystallization from the amorphous phase to ZnO (zincite), ZnFe2O4 (spinel) and Zn3O(SO4…
Simulation of Electrochemical Impedance Spectra of Solid Oxide Fuel Cells Using Transient Physical Models, Shi, Yixiang, Cai, Ningsheng, Li, Chen, Bao, Cheng, Croiset, Eric, Qian, Jiqin, Hu, Qiang, Wang, Shaorong
The crystalline photochromism of a diarylethene pyridyl ligand is applied to the modulation of the electronic environment of a high-spin Fe(II) metal ion.
An energy based model [W. D. Armstrong, J. Appl. Phys. 81, 2321 (1997); J. Atulasimha, Ph.D. thesis, Aerospace Engineering, University of Maryland, College Park, MD, 2006] is employed to predict the actuation (λ−H and B−H at various compressive stresses) and sensing behavior (B−σ and ε−σ at various bias fields) of sin…
Some types of phthalocyanines (MPc (M = H(2), Cu, or Zn), a p-type semiconductor) were used in combination with 3,4,9,10-perylenetetracarboxyl-bisbenzimidazole (PTCBI, an n-type semiconductor), with which those photoelectrode characteristics in the water phase were investigated in terms of kinetics. Each film of the P…
Three different approaches, including (1) manipulating the site chemistry, (2) controlling the spacing between neighbouring sites and (3) altering the adsorbates by the use of chelates, were successfully used to prepare MCM-41 adsorbents with excellent selectivity for silver adsorption from solutions containing copper.
Formation of new bio-nanohybrid material was obtained by immobilization of alkaline phosphatase within a Mg(2)Al LDH by "soft chemistry" coprecipitation synthesis, resulting in an original spongy gel-like morphology allowing the preservation of the enzyme structure and activity even at low pH values thanks to the buff…
There is a need for advanced, corrosion-resistant electrocatalyst support materials for use in fuel cells. To this end, electrically conducting diamond powder was prepared by depositing a layer of boron-doped nanocrystalline diamond on 100 and diamond powders. The doped layer was deposited by microwave plasma-assisted…
Thin films of Ga(2)O(3) have been produced from [Ga(NMe(2))(3)](2) and ROH (R = CH(2)CH(2)NMe(2), CH(CH(2)NMe(2))(2), CH(CH(3))CH(2)NMe(2), CH(2)CH(2)OMe and C(CH(3))(2)CH(2)OMe) by aerosol assisted chemical vapour deposition on glass. Transparent, unreflective films were obtained at a deposition temperature of 550 de…
The analytical and physical properties are reported for nanohole arrays prepared with glancing angle deposition (GLAD) or plasma treatment of a nanosphere lithography (NSL) mask prior to the deposition of a thin Au film. The nanohole arrays obtained with a 450 nm nanospheres mask are characterized using atomic force m…
Hybrid composite phenolic foams are reinforced with chopped glass and aramid fibers in varied proportions. The mechanical properties are measured and compared with those of foams reinforced with only aramid and glass fibers. The compression and shear properties of the hybrid reinforced foams are also compared with tho…
The effect of equilibrium moisture content (ranging from 4 to 12.5% moisture, corresponding to 20 to 90% relative humidity) on piloted ignition times of single wall and tri-wall corrugated paperboard samples has been measured over a range of external radiant heat flux (10 to 60 kW/m2) in the Fire Propagation Apparatus…
When ceria is deposited over supported PGM catalysts its reducibility is dependent on the work function of the underlying metal.
An attempt to prepare ferric hydroxide supported Au subnano clusters via modified co-precipitation without any calcination was made. High resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) have been employed to study the structure and chemical states…
A series of prototypic, paramagnetic all-organic liquid-crystalline (LC) compounds containing a chiral nitroxide unit as a spin source in the mesogen core have been prepared. Their unique electric and magnetic properties in their rod-like LC phases are summarized.
Binary SnO-P2O5 (SP) glasses with 52-72 SnO mol% were examined. Glass transition temperature, density, refractive index and absorption edge were studied for transparent SP glasses. The structure of SP glasses was evaluated by FT/IR and Raman spectroscopy. The water durability was investigated by weight loss and Raman…
Gelatin, a natural biologic macromolecule, was successfully used as a new binder in place of poly (ethylene oxide) (PEO) in the fabrication of sulfur cathode in lithium-sulfur batteries. The change of a gelatin binder sulfur cathode in the discharge-charge process was investigated by X-ray diffraction and differential…
The degradation of anode-supported cells was studied over 1500 h as a function of cell polarization either in air or oxygen on the cathode side.Based on impedance analysis, contributions of the anode and cathode to the increase of total resistance were assigned.Accordingly, the degradation rates of the cathode were st…
Two one-dimensional (1D) azido, carboxylato and DMSO triply bridged coordination polymers of formula [Cu(mu1,1-N3)(mu1,3-(C4H3S-CH2COO))(mu-DMSO)]n (1) and [Cu3(mu1,1-N3)4(mu1,3-(C4H3S-COO)2)(mu-DMSO)2]n (2) have been synthesized, structurally characterized, and their magnetic properties have been studied. Cu(II) atom…
Adding sodium salts to a dilute sodium laurate (SL) aqueous solution, slow phase transition was observed from the micelle solution to a gel phase. The phase-transition process has great resemblance to crystal salt-out. The observation by transmission electron microscopy (TEM) proved that the hydrogel is a network stru…