Abstract
A facile and direct method for synthesizing magnetic periodic mesoporous organosilica nanoparticles from pure organosilane precursors is described. Magnetic ethylene- and phenylene-bridged periodic mesoporous organosilica nanoparticles (PMO NPs) were prepared by nanoemulsification techniques. For fabricating magnetic ethylene- or phenylene-bridged PMO NPs, hydrophobic magnetic nanoparticles in an oil-in-water (o/w) emulsion were prepared, followed by a sol-gel condensation of the incorporated bridged organosilane precursor (1,2 bis(triethoxysilyl)ethane or 1,4 bis(triethoxysilyl)benzene), respectively. The resulting materials were characterized using high-resolution scanning electron microscopy (HR-SEM), high-resolution transmission electron microscopy (HR-TEM), energy-dispersive X-ray (EDX) spectroscopy, powder X-ray diffraction (XRD), solid-state NMR analysis, and nitrogen sorption analysis (N2-BET). The magnetic ethylene-bridged PMO NPs were successfully loaded using a ruthenium oxide catalyst by means of sonication and evaporation under mild conditions. The obtained catalytic system, termed Ru@M-Ethylene-PMO NPS, was applied in a reduction reaction of aromatic compounds. It exhibited very high catalytic behavior with easy separation from the reaction medium by applying an external magnetic field.
| Original language | American English |
|---|---|
| Article number | 5769 |
| Journal | Applied Sciences (Switzerland) |
| Volume | 10 |
| Issue number | 17 |
| DOIs | |
| State | Published - Sep 2020 |
Bibliographical note
Funding Information:Funding: This research was funded by Casali Foundation.
Funding Information:
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Tanhde 4en.le iCmwoi mncaatlgeusnsiteohtneic sccuamtalbyetrisco smyset ewmorwkuasp aapnpdl ifeildteirnintgheprhoycdersosegs.e Wnateio bnerlieeavcetitohnato tfhaisr osmucacteicsscfouml sptroautnedgys faonrd d iets iegxnhinibgitpedu rae mhiagghn ecaticta PlyMticOp nearnfoomrmaatenrcaiel.sI ncatrnopdruocviingd et nheewmoapgpnoerttiucn1niatnieso pina rmticalnesy cina tathlyetsice We succeeded in synthesizing and characterizing new magnetic PMO nanoparticles from pure annadno osthysetresmcsi egnrteifaitclya rimeasp.roves the catalyst’s separation and recovery fromthe reaction mediumand organosilica precursors. These novel systems were utilized for designing new catalytic nanoreactors 4eli. Cominanclustesionsthe cumbersome workup and filtering processes. We believe that this successful strategy eliminates the cumbersome workup and filtering processes. We believe that this successful strategy by supporting metal nanoparticles in their mesoscopic channels. 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Omar is grateful to the Ministry of Science and Technology of Israel for her fellowship. pattern of manuotscherript.Ruscient@Ethylene ificareaPMs.ONPs, GC chromatographs and 1HNMR spectra of the hydrogenation products. FCuonndfliinctgs: TohfiIsnrteesreeasrtc:hT hweaasu ufthnodresd d beycl Caraesnaloi Fcoounnfldicattoiofni.nterest. The funders had no role in the design of the Author Contributions: Conceptualization, R.A.-R.; methodology, R.A.-R. and S.O.; formal analysis, R.A.-R. and Sstuupdpyl;einm tehneatcroylleMctiaotne,r iaanlasl:yTshees, oforl ilnowteirnpgreaatrteio anv oafi ldaabtlae; ionn tlhinee w arti twinwgo wf .tmhed mp.aicnoumsc/rxxipxt/,so1r, iFni gthuere d eSc1is:ioXnR tDo SA.Ock.;noinwvleestdiggamtieonn,t sS:.OO.;mraersiosu grcraetse,fRu.lAt o.-tRh.e; Mdaintais tcruyroaft Siocni,e nSc.Oea.;nwd Trietcinhgn—oloorgigyionfa Ils rdarealffto pr rheepraferaltloiowns, hSi.pO..; pattern of publish the Rures@Ethylene ults. PMO NPs, GC chromatographs and 1HNMR spectra of the hydrogenation products. writing—review and editing, R.A.-R. and S.O.; visualization, S.O.; supervision R.A.-R.; project administration, Conflicts of Interest: The authors declare no conflict of interest. The funders had no role in the design of the A.uAt.h-Ro.r; Cfounntdriinbgu taiocnqsu: iCsitoioncne,pRtu.aAl.i-zRa.tiAonll, Ra.uAt.h-Ror.;sm heatvheo dreolaodgya,nRd.Aa.-gRr.eaendd t So.Oth.; efoprumballiashneadly vseis,rRsio.An.-Rof. atnhde study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to m.Oan.;usincrviepstt.igation, S.O.; resources, R.A.-R.; data curation, S.O.; writing—original draft preparation, S.O.; publish the results. writing—review and editing, R.A.-R. and S.O.; visualization, S.O.; supervision R.A.-R.; project administration, Funding: This research was funded by Casali Foundation. R.A.-R.; funding acquisition, R.A.-R. All authors have read and agreed to the published version of the Acaknnuoscwrilpetd. gmentsS:. Omar is grateful to the Ministry of Science and Technology of Israel for her fellowship.
Publisher Copyright:
© 2020 by the authors.
Keywords
- Catalysis
- Hydrogenation of aromatic compounds
- Magnetic nanoparticles
- Periodic mesoporous organosilica nanoparticles
- Ruthenium nanoparticles