Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The structure and electronic properties of normal spinel ZnFe2O4 have been investigated using density functional theory (DFT) within the generalized-gradient approximation (GGA) and the local density approximation (LDA). The calculation results show that GGA/RPBE with ultrasoft pseudopotential method is a good method…
In recent years, layered double hydroxides (LDHs) have received much interest as host materials for the construction of organic–inorganic supramolecular structures by an anion exchange method. This study demonstrates the preparation of a series of solid base catalysts through attachment of triazabicyclodecene (TBD) to…
In 2005, Wyart et al. [Europhys. Lett., 2005, 72, 486] showed that the low frequency vibrational properties of jammed amorphous sphere packings can be understood in terms of a length scale, called *, that diverges as the system becomes marginally unstable. Despite the tremendous success of this theory, it has been dif…
A series of iron modified cobalt oxide catalysts (FeaCobOx (b : a = MCo : MFe, 10 < x < 15)) were prepared by a co-precipitation method, characterized by nitrogen adsorption–desorption, XRD, Raman spectroscopy, XPS, H2-temperature programmed reduction, CO-temperature-programmed desorption, O2-temperature-programmed de…
Assembly of nanowires into ordered macroscopic structures has attracted great scientific interest in the past decade. In this work, we report on a rapid low-cost scalable oil–water (two-phase) interfacial self-assembly process for fabricating aligned Ag nanowire (AgNW) films on solid substrates. This process is much s…
A ternary hydrogen storage system, of superior cyclic stability and high capacity, was developed from a mixture of Ca(BH4)2, LiBH4 and MgH2 in molar ratios of 1 : 2 : 2. Investigation on both non-isothermal and isothermal hydrogen desorption/absorption properties shows that the hydrogen desorption starts from 320 °C a…
Material research has moved from generalization to specificity. Progress of nanoscience from synthesis to application oriented tailored synthesis has generated keen interest in the subject. The electrical and magnetic properties of spinel ferrites is one area of nanoscience that is slowing progress towards application…
A new amphiphilic homopolymer bearing an SCS pincer palladium complex has been synthesized by reversible addition fragmentation chain transfer polymerization. The amphiphile has been shown to form spherical and worm-like micelles in water by cryogenic transmission electron microscopy and small angle neutron scattering…
Mesoporous molybdenum tungsten oxynitride was synthesised by the temperature-programmed reduction of the bimetallic oxide precursor in ammonia and its electrochemical properties were investigated in 1 M H2SO4 aqueous electrolyte. The reaction product is a single-phase material, in which molybdenum and tungsten are dis…
Undoped and Al-doped ZnO (AZO) nanoparticles (NPs) have been successfully synthesized by the simple sol-gel method. The NPs have been characterized by a number of techniques as x-ray diffraction (XRD), UV-visible spectroscopy and scanning electron microscopy (SEM) at room temperature for 0%, 0.5%, 1% and 2% of Al conc…
The compression-dependence of the friction coefficients of neutral and charged polymer brushes at the same surface coverage is studied using dissipative particle dynamics (DPD) at two different shear rates. The chemical potential of the solvent particles is kept constant along the compression curve in order to mimic t…
The synthesis and characterization of two new N,N'-diarylverdazyl radical ligands and their corresponding PdCl2 complexes are described. One of the two radicals is of the "Kuhn verdazyl" structure type and was made by adaptation of standard synthetic procedures for this class of verdazyl. The N,N'-diphenyl-6-oxoverdaz…
ZnO colloidal nanoparticles were synthesized, the average size of these nanoparticles is around 25 nm with hexagonal form. It was noted that stabilization depends directly on the purifying process; in this work we do not change the nature of the solution as a difference from Meulekamp′s method, and we do not use any a…
Pre-combustion CO2 Capture applied to industrial sources is an alternative for achieving low CO2 emissions at a moderate cost. The potential of the technology to be used as retrofit would further expand its possibilities and could be a real benefit to the industry in terms of achieving CO2 emission reduction at relati…
In this paper, we report the use of electrospinning methods for the preparation of polymeric nanofibers containing Lanthanide–Organic Frameworks (LnMOFs) and present a detailed investigation of their spectroscopic properties. The nanocomposites were based in polyvinyl alcohol (PVA) and two isotypical 2D LnMOFs ([Ln(DP…
Two Dy(III) ions can be water bridged to form a textbook example of ferromagnetic short-bridged Dy-dimers where strong Ising anisotropy can be evidenced by single-crystal rotating magnetometry. The dimers present both single ion and single molecule magnet behaviour. Magnetic dilution evidences the influence of the fer…
An in situ X-ray absorption fine structure (XAFS) experiment has been performed to observe the evolution of gold nanoparticles in the ionic liquid [BMIM][AuCl4], by hard X-ray irradiation. The ionic liquid acts as both a reducing agent and a protective ligand. A synchrotron-based X-ray plays the role of the irradiatio…
The dihydride pincer complex [IrH2(POCOP)] reacts with surface silanols of mesoporous silica (SBA-15) to give the coordinatively unsaturated, yet stable hydridesiloxo Ir(III) species [IrH(O-SBA-15)(POCOP)]. The silica-grafted complex catalyses the hydrogenation of ethene and propene at low temperature and pressure wit…
Iron- and nickel-substituted decaniobates, [H2Fe(III)Nb9O28](6-) and [H3Ni(II)Nb9O(28)](6-) were hydrothermally synthesized as tetramethylammonium salts and the structures were determined by X-ray crystallography. The highly soluble title compounds were characterized by ESI-MS, FT-IR and UV-Vis titration.
The single phase Pb(0.8)Co(0.2)TiO3 thin films were synthesized on a Pt/Ti/SiO2/Si substrate by the sol-gel route. The present films exhibited homogeneous microstructure with low porosity. O 1s X-ray photoelectron spectroscopy (XPS) was used to detect the amount of oxygen vacancies. The ferroelectric measurements show…