Sintesis Nanopartikel perak (Ag) melalui metode reduksi kimia dengan variasi molar MSA dan karakterisasi struktur kristal dan morfologi / Rina Fitrianingsih
| Main Author: | Fitrianingsih, Rina |
|---|---|
| Format: | Thesis NonPeerReviewed |
| Terbitan: |
, 2012
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| Subjects: | |
| Online Access: |
http://repository.um.ac.id/20566/ |
Daftar Isi:
- KatakuncireduksikimiananopartikelstabiliserSintesisnanopartikelperak(Ag)melaluimetodereduksikimiadenganvariasimolarMSAdankarakterisasistrukturkristaldanmorfologi.Nanosilveriscurrentlyoneofthemostcommonengineerednanomaterialsandisusedinmanyapplicationsthatleadtothereleaseofsilvernanoparticlesandsilverionsintoaqueoussystems.Nanosilveralsopossessesenhancedantimicrobialactivityandbioavailabilitythatmaylessenvironmentalriskcomparedwithothermanufacturednanomaterials.Describedinthisresearcharethesynthesisofsilvernanoparticleproducedbychemicalreductionfromsilvernitrate(AgNO3)solution.AsareducingagentSodiumBorohydride(NaBH4)wasusedandMercaptosuccinicAcid(MSA)asstabilizertopreventthenanoparticlefromaglomerating.Itwasalsousedtwokindsofsolventtheyarewaterandmethanol.IntypicalexperimentMSAwasdissolveinmethanolwithanumberofvariationofmolarityi.e.003M006M012M015Mandthemixturewaskeptundervigorousstirringinanicebath.Asolutionofsilvernitrateof340mgin6792mlwaterwasadded.Afreshlypreparedaqueoussolutionofsodiumborohydride(7566mLin100mLofwater)wasaddeddropwisely.Thesolutionwaskeptforhalfanhourforstirringandwereallowedtosettledowninmethanol.CharacterizationofthesilvernanoparticleconductedbyusingXRDpatternandScanningElectronMicroscopy(SEM)toobtaintheirstructuresofsilvernanoparticlesmorphologyandsizes.Experimentalresultshowedthatdiameterofsilvernanoparticlesizedabout243nm(AgMSA003M)204nm(AgMSA006M)168nm(AgMSA012M)169nm(AgMSA015M)whichwascalculatedbyScherrerformulabytakingtheFWHMfromfittingtoGaussian.Thephasesandlatticeparametershowedthatthereisnochangeinvolumesignificantlybyincreasingmolarityofstabilizer.Incontrastthesizeofparticlesisdecreasing