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1、MaterialsLetters63(2009)1693–1695ContentslistsavailableatScienceDirectMaterialsLettersjournalhomepage:www.elsevier.com/locate/matletRapidremovaloforganictemplatefromSBA-15withmicrowaveassistedextractionaa,⁎,Ya-ChuLinabb,⁎Teh-LongLai,Youn-YuenShu,Wan-Ni
2、ngChen,Chen-BinWangaEnvironmentalAnalysisLaboratory,DepartmentofChemistry,NationalKaohsiungNormalUniversity,Kaohsiung802,Taiwan,ROCbDepartmentofAppliedChemistryandMaterialsScience,ChungChengInstituteofTechnology,NationalDefenseUniversity,Tahsi,Taoyuan,
3、33509,Taiwan,ROCarticleinfoabstractArticlehistory:Theremovalofsurfactanttemplatesfromtheporesofas-preparedSBA-15wasstudiedbymeansofmicrowaveReceived17March2009assistedextraction(MAE).OccludedsurfactantmoleculeswithinSBA-15werecompletelyremovedwithinAcc
4、epted7May20096minbytheMAEmethod,resultinginframeworkswithhighersurfacearea,lowerstructuralshrinkageandAvailableonline14May2009richersilanolgroupsthanthatofthermocalcinedsamples.TheMAEsampleexhibitedlargersurfacearea2−12−1(ca.1000m·g)thanthesampletreate
5、dbythermocalcining(ca.560m·g).AsdeterminedtheKeywords:enrichmentofPAHsonMAEwithcalcinedsamplesbyon-linesolid-phaseextractionHPLC,theMAEsamplePorosityNanomaterialspossessedmoreenrichmentandlowerdetectionlimitthanthecalcinedsample.©2009ElsevierB.V.Allrig
6、htsreserved.1.Introductionmethodtoeliminateorganictemplatebymicrowaveassistedextraction(MAE),whichshowsmanybenefitsoverothermethodsHexagonallyorderedSBA-15silicapossesseshighsurfacearea,suchaslowerstructuralshrinkage,largersurfaceareasandhigheroutstandi
7、ngthermalstability,poresizeadjustment,andtailoredsilanolgroupdensity.particlemorphology[1].TheSBA-15silicahasalreadybeenappliedindifferentfieldsofseparation[2],catalysis[3],andadvancedoptical2.Experimentalmaterials[4].Themostcommonmethodsusedinremovingt
8、heorganictemplatesarecalcinationremovetechnique[5],extractionThesilicamesophasewaspreparedaccordingtothesynthesistechniques[4–6](byconventionalsolventorbysupercriticalfluid),outlinedbyGrieken[1].Themolarcompositionofthemixtureforozonetre
