%0 Journal Article
%T PreparationofTiO2NanoparticlesCoatedCottonFibersatLowTemperatureandTheirPhotocatalyticActivity
%A 石中亮
%A 卢昌岁
%A 王海波
%A 潘永娥
%A 姚淑华
%J 过程工程学报
%D 2010
%X TiO2nanoparticlescoatedcottonfibercompositewassuccessfullypreparedbyusingasol-gelmethodatlowtemperature(about100℃)usingtetrabutyl-titanate[Ti(OBu)4]asrawmaterial.ThepreparationoftheTiO2colloidandthecompositeweredescribed.ThepropertiesofresultingmaterialswerecharacterizedbySEMandXRD,thephotocatalyticdegradationperformancewastestedusingmethyleneblue(MB)asthetargetpollutantinaqueoussolution.TheresultsshowedthattheamorphousTiO2nanoparticlesweredistributedevenlyontheoutersurfacesofcottonfibers,whichshowsefficientphotocatalyticpropertieswhenexposedtoUVlight,thedegradationrateofMBreached95.35%undertheconditionsofcatalystdosage2.5g/L,MBconcentration50mg/L,irradiationtime120min,andpH10,andthephotocatalyticactivityofTiO2/cottonfibersremainedabove90%ofitsactivityas-preparedafterbeingusedfourtimes,thedegradationrateofMBcouldreach88.78%whenirradiationtimewas120min.ThephotocatalyticdegradationofMBcouldbeproperlydescribedbythefirst-orderkineticlaw.BycomparisonoftheremovalratesofMBwithandwithoutUVlight,itcouldbeaffirmedthatthedisappearanceofMBwasduetophotodegradationratherthanadsorptiononcottonfibers.
%K TiO2nanoparticles
%K cottonfibers
%K photocatalysis
%K methyleneblue
%U http://www.jproeng.com/qikan/Cpaper/zhaiyao.asp?bsid=15648