摘要
Aseriesofwell-dispersedtitania-dopedceriananoparticlesCe1-xTixO2wererapidlypreparedbyanovelsalt-assistedsolutioncombustionprocessusingcorrespondentmetalnitratesasoxidizersandethylglycolasfuel,andthencoatedwithamorphoussilicabyseededpolymerizationusingtetraethylorthoslicate(TEOS).Theas-preparedsampleswerecharacterizedbytransmissionelectronmicroscopy(TEM),X-raydiffraction(XRD),Fourier-transforminfraredspectroscopy(FTIR),andultraviolet-visiblelight(UV-Vis)diffusereflectancespectroscopy.Theresultsindicatedthatcomparedwiththeas-preparedpureceriananoparticles,thered-shiftphenomenonoccurredforTi-dopedceriananoparticleswithTiincorporation.Meanwhile,theabsorptionintensityintheUVlightregionslightlydecreasedandtransmissionrateinvisiblelightregionwassomewhatenhanced.Incomparisonwiththesilica-coatedCeO2nanopowders,thesilica-coatedCe0.95Ti0.05O2nanopowdersdisplayedthesameabsorptionintensityintheUVlightregion,broaderUVabsorptionbandandhighertransmissionrateinvisiblelightregion.
出版日期
2011年08月18日(中国期刊网平台首次上网日期,不代表论文的发表时间)