搜索结果: 1-15 共查到“Sol-Gel”相关记录41条 . 查询时间(0.247 秒)
The sol-gel derived Co-Mn/TiO2 catalysts for light olefins production
Fischer-Tropsch synthesis light olefins characterization
2014/2/28
In this research work, two 30%(Co-Mn)/TiO2 catalysts were prepared using sol-gel (catalyst A) and co-precipitation (catalyst B) methods. The activity and selectivity to C2~4 light olefins in Fischer-T...
Low temperature CO oxidation over mesoporous CuFe2O4 nanopowders synthesized by a novel sol-gel method（图）
Carbon monoxide oxidation CuFe2O4 solid solution Sol-gel Nanopowder Propylene oxide Iron oxide
2013/9/16
Mesoporous CuFe2O4 solid solution nanopowders with high specific surface areas were synthesized by a novel, very simple and inexpensive sol-gel route using propylene oxide as gelation agent, and used ...
Microwave Assisted Sol-Gel Synthesis of MgO Nanoparticles and Their Catalytic Activity in the Synthesis of Hantzsch 1,4-Dihydropyridines（图）
magnesium oxide microwave-assisted sol-gel method nanoparticle Hantzsch 1,4-dihydropyridine
2012/9/11
A microwave-assisted sol-gel method was employed for the preparetion of nano-sized MgO particles using Mg(NO3)2·6H2O as precursor and deionized water as solvent. The sample calcined at 500 °C had a hi...
Structure and electrorheological properties of nanoporous BaTiO3 crystalline powders prepared by sol-gel method
Porous BaTiO3 Electrorheological properties Sol–gel
2009/6/14
In this paper, a novel nanoporous barium titanate (BaTiO3) crystalline powder was synthesized by using triblock poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO) based systems (P-123) as the ...
Optical humidity sensing behaviour of sol–gel processed nanostructured ZnO films
humidity sensors optical fiber
2009/3/10
This paper reports the humidity sensing behaviour of sol–gel processed ZnO films deposited on U-shaped borosilicate rods as substitute of optical fiber having the same radius of curvature. The films p...
Red-emitting LiEuW2O8 phosphor for white emitting diodes prepared by sol–gel process
phosphors sol–gel near-UV
2009/2/10
Scheelite-type LiEuW2O8 (LEW) phosphors with the optical function of color conversion from near-UV to red were prepared by sol–gel method using a lithium acetate dehydrate, europium(III) nitrate pent...
Silica-based versus silica-titania sol–gel materials – comparison of the physical properties: surface tension, gelation time, refractive index and optical transmittance
silica-titania sol–gel materials surface tension
2009/1/6
Knowledge of the physical parameters and optical constants of sols and sol–gel materials is important in view of their possible applications. In this work, silica and silica-titania sols were examined...
Sol-Gel法制备NiTiSMA/FC复合材料的界面结构研究
复合材料 界面结构 薄膜
2008/11/6
借助XRD、SEM研究了Sol-Gel法制备NiTiSMA/FC薄膜复合材料在650℃晶化退火处理后的界面结构。结果表明，陶瓷薄膜层的约束抑制了NiTiSMA基体的高温时效反应；由于NiTiSMA基体表面的高温氧化产生的TiO2过渡层，使NiTiSMA与铁电陶瓷两异质之间良好结合。
Superhydrophobic cotton fabrics prepared by sol–gel coating of TiO2 and surface hydrophobization
superhydrophobicity titania sol UV shielding cotton fabrics
2008/9/1
By coating fibers with titania sol to generate a dual-size surface roughness, followed by
hydrophobization with stearic acid, 1H, 1H, 2H, 2H-perfluorodecyltrichlorosilane or their
combination, hydro...
A novel method for synthesis of -Si3N4 nanowires by sol–gel route
sol–gel nanowires -Si3N4
2008/3/13
Silicon nitride (Si3N4) nanowires have been prepared by carbothermal reduction followed
by the nitridation (CTRN) of silica gel containing ultrafine excess carbon obtained by the
decomposition of de...
In the case of electrically conducting layers prepared on a glass substrate, sodium diffuses into the SnO2 film and deteriorates their electric properties. Sodium barrier diffusion properties of thin ...
AFM examination of sol–gel matrices doped with photosensitizers
atomic force microscope (AFM) sol–gel material nanostructure
2008/1/5
Various compounds may be entrapped into the sol–gel materials, including the photosensitive agents. The nanostructure of the final material depends on the matrix itself, as well as on the structural p...
Formation and structural characterization of silver nanoparticles in ormosil sol–gel films
silver nanoparticles ormosil sol–gel composite
2008/1/5
Silver nanoparticles were obtained in situ in ormosil sol–gel films with attached urethane groups. Optical spectra of the silver nanoparticles in the films show red shift of absorption maximum with in...
Fluorescence properties of sol–gel materials doped with photosensitizers
fluorescence sol–gel material
2008/1/5
Sol–gel materials may found plenty of applications, e.g., as carriers for various substances, which can be exploited for sensing purposes or as drug releasing carriers. In this work, the fluorescence ...
络合作用对Sol-gel法制备Er3+掺杂TiO2粉末光致发光特性影响
2007/12/12
摘要 以钛酸正丁酯为前驱体, 乙酰丙酮为络合剂, 分别在室温和70°C进行对前驱体改性的络合反应, 获得改性前驱体Ti(O-Bu)4-x(AcAc)x. 以异丙醇为溶剂, 采用溶胶-凝胶(sol-gel)法制备0.1~3.0mol% Er 3+掺杂TiO2粉末. 差热-热重(TG-DTA)分析结果表明, 由室温络合改性前驱体制备的粉末, 无定型到锐钛矿和锐钛矿到金红石的相变温度, 较由70°C络合...