Luminescence film material plays a very important role in display technology. In this paper, electrochemical deposition of luminescent Y2O3:Eu or Y2O3:Tb thin films on transparent conducting optically ITO glass substrates by cathodes reduction of yttrium nitric was investigated. Y(OH)3 deposits were obtained using a conventional three electrode cell that potential of work electrode was –1.2v vs. Ag/AgCl electrode for 400 s in a 0.1mol/L Y(NO)3 with 4%(mol/mol) Eu(NO)3 at 65°C.Then this glass was sintered for 2h at 500°C.The luminescence spectrum of the film prepared by this method was tested. Its luminescent spectrum is the same as that of powder which prepared by solid method. Its XRD confirmed the formation of Y2O3 and SEM revealed uniformity of film.
The oxidized multi-walled carbon nanotubes were prepared by a nitric acid treatment procedure, which were then used as additive in thin-layer chromatography stationary phases for resolution of ofloxacin, mandelic acid and 2-chloro-mandelic acid enantiomers. In a sharp contrast with pristine multi-walled carbon nanotubes/D-(-)-tartaric acid impregnated thin-layer chromatography plates, oxidized multi-walled carbon nanotubes/D-(-)-tartaric acid impregnated plates presented better enantioseparation effects for ofloxacin enantiomers.
The separation process of cobalt and nickel using microemulsion system saponified with P204 as extracting agent was studied. The influence of initial concentration, the concentration of P204, initial pH, the extracting time and the concentration of cobalt and nickel on separation coefficient were also studied. Experimental results show that the saponification microemulsion system using P204 as extractant is thermodynamic stable, and it can separate cobalt and nickel better. The optimum conditions were achieved as: the initial concentration is 0.05 mol/L, pH is 2, the concentration of P204 is 8%, extraction time is 10 minutes, the volume ratio of organic phase to water phase is 2:1.
Supported emulsion liquid membrane using copper(Ⅱ) N-dodecyl-(L)- hydroxyproline as a chiral carrier was used as a novel technique to extract L-theanine. The effects of initial concentration of L-theanine in the feed phase, chiral carrier concentration in the membrane phase and salt concentration in receiving phase on extraction performance were studied and some optimum conditions were achieved.
A tungsten-containing mesoporous molecular sieve SBA-15 (W-SBA-15) was synthesized directly by the hydrolysis of tetraethylorthosilicate and ammonium tungstate with triblock copolymer EO20PO70EO20(P123) as template in acidic medium. The W-SBA-15 was characterized by XRD, N2adsorption/desorption, UV-Vis spectroscopy, Raman spectroscopy and ICP-AES spectrometry. The W-SBA-15 exhibited high catalytic activity for the hydroxylation of cyclohexene with hydrogen peroxide (H2O2) as oxidant. The complete conversion of cyclohexene into glycol monoethers with very high selectivity (92.6%) were obtained over the W-SBA-15 catalyst.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.