Materials Literature
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Schichtförmiger Montmorillonit (MMT) wurde als Nanoreaktor für die Erzeugung von planaren pyridinischen und pyrrolischen N-Zentren in N-dotiertem Graphen (NG) verwendet (siehe Bild). Die Selektivität für die Bildung der planaren N-Zentren war umgekehrt proportional zum Schichtabstand (δ) des MMT und erreicht ein Maxim…
Simple organic cooperative assembly of triazine molecules leads to three-dimensional macroscopic assemblies of low-dimensional graphitic carbon nitrides (g-CNs), for example, nanoparticles, nanotubes, and nanosheets. The approach enables the characterization of the cooperative properties and photocatalytic activities…
With H2 O or NH3 stimuli, the blue cobalt-based metal-organic framework (MOF) BP can reversibly transform to red RP. The removal/recovery of terephthalate ligands accompanied by the transformation leads to a gate effect, which allows the encapsulation and release of small solvent molecules under certain conditions. Th…
Developing nonprecious group metal based electrocatalysts for oxygen reduction is crucial for the commercial success of environmentally friendly energy conversion devices such as fuel cells and metal-air batteries. Despite recent progress, elegant bottom-up synthesis of nonprecious electrocatalysts (typically Fe-N(x)/…
The effect of the CO 2 content (up to 30%) on the methane catalytic combustion over a perovskyte-based monolith has been investigated at high pressure (up to 8 bar). Catalytic tests have been performed by varying the preheating temperature and the operating pressure. The CO 2 adsorption over the catalytic surface has…
Abstract Drug delivery through tissue‐engineered scaffolds provides a composite approach to address the regenerative limitations of simple material implantation, providing expanded avenues for therapeutic tissue‐repair strategies in the clinic. Both nano‐ and microfibrous scaffolds generated by a variety of techniques…
The compound Au10Mo4Zn89 has been synthesized, and its structure has been analyzed by single-crystal X-ray diffraction. The compound crystallizes in cubic space group F43m (No. 216) with a unit cell that contains 412 atoms. The structure is largely tetrahedrally closely packed, but an octahedral arrangement of atoms i…
The kinetic parameters affected by allosteric mechanisms contain collections of rate constants that vary based on differences in the relative rates of individual steps in the reaction. Thus, it may not be useful to compare enzymes with similar allosteric mechanisms unless the point of regulation has been identified. R…
Abstract Amino‐substituted pyrrole‐fused perylenebis(dicarboximides) have been prepared from tri‐ or tetrabromoperylene prcursors by using the classical azidation conditions for the substitution of aromatic halogen, that is, NaN3, sodium ascorbate, CuI, and N,N‐dimethylethane‐1,2‐diamine in DMSO/H2O. The pyrrole‐fused…
Sisal fibers were pretreated by alkali and maleic anhydride, and then mixed with polypropylene to fabricate sisal fiber-reinforced composites by a self-made vane extruder based on elongational flow field. Maleic anhydride-grafted polypropylene was used as compatilizer to increase the fiber/matrix interactions. The inf…
The Thirteenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-13), September 11-13, 2013, Sapporo, Japan.
Despite major advances in addressing the dispersion of carbon nanotubes (CNTs) in polymers and their interfacial interactions, exploring a facile approach for massively creating them is still fascinating. We interestingly find that the CNT dispersion is considerably improved in polypropylene (PP), and ∼19.1 wt % of PP…
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Dynamic heterogeneities in ethylene–vinyl acetate (EVA) random copolymers were studied using broadband dielectric spectroscopy (BDS) over a broad frequency and temperature range. BDS data for EVA copolymers show relatively broad spectra extending over several frequency decades, which make interpretation of the data co…
Der „Goldstandard“ für Nanothermometer: Fluoreszierende Gold-Nanocluster (AuNCs) mit Emission im Nahinfrarotbereich können als intrazelluläre Thermometer genutzt werden. Die starke Temperaturabhängigkeit der AuNC-Fluoreszenz ermöglicht die Temperaturmessung in Kombination mit Fluoreszenzbildgebung in HeLa-Zellen.
Abstract In this work, hierarchical flowerlike Bi2S3 structures constructed by polycrystalline nanoplates combined with urchinlike and wirelike Bi2S3 were synthesized by using a thioglycolic acid assisted solvothermal method. On the basis of the time‐dependent experimental results, an anion exchange process and a self…
An 8 -mol. % Y2O3-doped zirconia/10-mol. % GdO2-doped ceria (YSZ/GDC) bilayer electrolyte and a Gd0.5Sr0.5CoO3 (GSCO) cathode were deposited by a single-processing, pulsed laser deposition (PLD) method to fabricate anode support cells. No additional heat treatment was needed. Laser frequencies of 10, 20, and 100 Hz we…
Using ab initio calculations based on density functional theory, we have studied the equibiaxial strain effect on the electronic and optical properties of bulk and monolayer MoSe 2 . Very low value of the elastic constants of monolayer MoSe 2 compared to bulk MoSe 2 suggests that the tailoring of the electronic struct…
利用X射线衍射、N2吸附等温线、X射线光电子能谱、X射线吸收谱、H2-程序升温还原、甲基橙选择化学吸附和等电点测定等方法研究了共沉淀方法制备的一系列Cex Ti1-x O2复合氧化物的结构. 成功发展了甲基橙选择化学吸附和等电点方法研究Cex Ti1-x O2复合氧化物的最外层表面结构, 并定义了等价CeO2表面覆盖度来描述Cex Ti1-x O2复合氧化物的最外层表面结构. Cex Ti1-x O2复合氧化物 (x ≥ 0.7)形成立方萤石相固溶体, Ce0.3Ti0.7O2表现出纯的单斜相, 而其它复合氧化物表现出混合相. CexTi1-x O2复合氧化物最外层表面结构的演变行为不同于其体相结构. Ce0.7Ti0.3O2立方…
Superhydrophobic cotton fabrics are prepared using silica and titania hybrid sol and hexadecyltrimethoxysilane. The surface morphology of cotton fabrics is characterized by scanning electron microscopy. The water contact angles on the as-prepared superhydrophobic cotton fabrics is 159° when the volume ratio between so…