Materials Literature
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The functionalized porous hybrid silica as a separation medium was synthesized by using Cetyltrimethyl Ammonium Bromide(CTAB) as template, (3-aminopropyl) triethoxysilane (APTES) and tetraethyl orthosilicate (TEOS) as reactive monomer, with the existence of ammonia, reacting for 80 h at 80°C. The influences of the mai…
The excellent properties of Mg-Li alloys make them suitable light fabrication materials used extensively in many applications. The microstructure and the surface oxide film at different temperature of as-cast Mg-7Li alloy were investigated by optical microscope(OM), scanning electron microscopy(SEM), X-ray diffraction…
The acid dipping-plating pretreatment was applied on iron substrate prior to no-cyanide copper plating process. After being pretreated in dipping solution, the thin copper film formed on iron substrate which could change the cathode electronic potential and enhance the copper plating rate in the follow-up copper elect…
In this paper, vinylated magnesium hydroxide (MH) nanosheets were prepared with 3-(trimethoxysilyl) propyl methacrylate (γ-MPS) and pristine MH nanosheets, then the MH/polymer hybrid nanoparticles were prepared by in-situ emulsion copolymerization of vinylated MH nanosheets and styrene (St) monomer and styrene/butyl a…
Disulfides play important roles in biological and chemical processes. Oxidation of thiols is the most exploited method for disulfide synthesis. Trichloromonoxomolybdenum (V) has been found to be a superior oxotransfer reaction catalyst for the conversion of thiols to the corresponding disulfides in excellent yields un…
A high yield of ultralong SnO2 nanowires is successfully achieved by a simple thermal evaporation of SnO powders under air ambient. The as-synthesized SnO2 nanobelts are single crystals with rutile structure. A backgated triode device for high-current applications has been developed with beltlike SnO2 field emitters.…
A rod/coil nanocomposite was prepared by a reactive mixing process of Poly(p-phenylenebenzobisthiazole) (PBZT) and Nylon66 in polyphosphoric acid (PPA). PBZT-Nylon66 block copolymers were synthesized during the reactive mixing process to act as compatibilizers of PBZT and Nylon66. The morphology and structure of the s…
α-FeOOH nanorods were fabricated via a one-step hydrothermal approach using iron nitrate hydrate (Fe(NO3)3·9H2O) as iron source, cetyltrimethylammonium bromide (CTAB) as a template and acetic acid (CH3COOH) solution as solvent. XRD, SEM, TEM, and TGA were applied to characterize the samples. The as-prepared α-FeOOH na…
Two different dendritic 8-hydroxyquinoline ligands were synthesized through convergent approach, and the products were characterized by nuclear magnetic resonance (NMR) and infrared spectrometry (IR); the fluorescence properties of the dendritic 8-hydroxyquinoline ligands and the corresponding metallic complexes with…
The method to improving surface corrosion resistance of 6063 aluminum alloy was studied, and the mechanism of surface corrosion resistanc was discussed in theory. The results indicate that the adjustment of chemical composition is of advantage to corrosion resistance of the alloy, its property is better as Mg, Si mass…
By pretreatment of Pt/CeO2 catalysts with high temperature reduction and subsequent low temperature reoxidation, the concentration of Ce3+ species in the Pt/CeO2 catalysts could be adjusted, while at the same time the Pt particle size remained constant. Thus the pure effect of Ce3+/Ce4+ couples on the selective hydrog…
Research the kinetic mechanism of grain growth of recrystallization of Cu-20Ni-5Sn alloy. The research result shows that the recrystallization temperature declines with the increase of cold-deformation. The recrystallization temperature is at about 500°C ~650°C respectively for 50% and 60% total cold deformation, and…
The mechanical properties of Low Carbon Si-Mn Q&P steel are strongly affected by the conditions of heat treatment. Microstructures and mechanical properties of Low Carbon Si-Mn Q&P steel at different partitioning temperature and holding time was investigated. The microstructure was analysed by scanning electron micros…
Four kinds of Mg-Al-Sr alloys of Sr/Al mass ratio between 0.0～1.0 were made in the vacuum resistor furnace. The effect and effect mechanical of the ratio on phase and microstructure were studied by OM, XRD, SEM and EDS and DTA. Results showed that metallographic images of alloys changed and the microstructures were re…
Used ultra-fine silicon oxide as carrier, the catalyst was prepared with the ZSM-5 molecular sieve with high n (SiO2)/n (Al2O3) ratio as active component for the catalytic cracking of C4 alkenes to propylene and ethylene. The precursors of CaO and La2O3 were used to adjust the acidic property of the catalyst. The cata…
Dispersion polymerization of acrylamide (AM) has been carried out in ethanol/water (90 v% ethanol) media with Polyvinylpyrrolidone(PVP) as a stabilizer, several surfactants as co- stabilizers, Sodium hydrogen sulfite (NaHSO3) and ammonium persulfate ((NH4)2S2O8) as a redox initiator(I). The influences of initiators, m…
A kind of novel hypercrosslinked resin containing hydroxymethyl group was firstly synthesised via chloromethylation of benzyl alcohol monomer and succedent Friedel- Crafts alkylation polymerization. The structure and micromorphology of the resin was characterized with BET, IR and elemental analysis. The results indica…
Activated carbon fiber (ACF) supported TiO2 photocatalyst was prepared by sol-gel-adsorption method. The state of TiO2 supported on the ACF was observed using a scanning electron microscope. Photo catalytic activity of the catalyst was evaluated by degradation of methylene blue in water, and the ways in which the effi…
In this manuscript two different fluorinated acrylate copolymers films, one was non-crosslinking Stearyl acrylate/2-(perfluorooctyl) ethyl methacrylate (SA/FOEMA) and another was cross-linked SA/2-hydroxyethyl methacrylate(HEMA)/FOEMA/hexamethylene diisocyanate trimers (N3300), were prepared and their crystallinities…
We have found that La substitutions can improve the magnetic properties of the strontium ferrite films without reducing the saturation magnetization. In this work, SrCexFe12-xO19 nanocrystalline films (x=0, 0.2…0.8) with high coercivity were synthesized and deposited on SiO2 substrate by sol-gel method and sintering a…