{"?xml":{"@version":"1.0"},"edm:RDF":{"@xmlns:dc":"http://purl.org/dc/elements/1.1/","@xmlns:edm":"http://www.europeana.eu/schemas/edm/","@xmlns:wgs84_pos":"http://www.w3.org/2003/01/geo/wgs84_pos","@xmlns:foaf":"http://xmlns.com/foaf/0.1/","@xmlns:rdaGr2":"http://rdvocab.info/ElementsGr2","@xmlns:oai":"http://www.openarchives.org/OAI/2.0/","@xmlns:owl":"http://www.w3.org/2002/07/owl#","@xmlns:rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","@xmlns:ore":"http://www.openarchives.org/ore/terms/","@xmlns:skos":"http://www.w3.org/2004/02/skos/core#","@xmlns:dcterms":"http://purl.org/dc/terms/","edm:WebResource":[{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-21RJONBA/767602d9-9ca3-470a-afc2-078b98e4ab1c/HTML","dcterms:extent":"19 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-21RJONBA/5bd72abe-0d14-4f7a-bf21-273dd4317d3b/PDF","dcterms:extent":"731 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-21RJONBA/b6569c7e-6a92-490d-b0c6-7ac2cc7f5552/TEXT","dcterms:extent":"18 KB"}],"edm:TimeSpan":{"@rdf:about":"2000-2024","edm:begin":{"@xml:lang":"en","#text":"2000"},"edm:end":{"@xml:lang":"en","#text":"2024"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:DOC-21RJONBA","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/urn:nbn:si:spr-ihg6vo21"},{"@xml:lang":"sl","#text":"Materiali in tehnologije"}],"dcterms:issued":"2007","dc:creator":["Bele, Marjan","Čampelj, Stanislav","Drofenik, Mihael","Jamnik, Janko","Makovec, Darko"],"dc:format":[{"@xml:lang":"sl","#text":"številka:2"},{"@xml:lang":"sl","#text":"letnik:41"},{"@xml:lang":"sl","#text":"5 strani"},{"@xml:lang":"sl","#text":"str. 103-107"}],"dc:identifier":["ISSN:1580-2949","COBISSID:604586","URN:URN:NBN:SI:doc-21RJONBA"],"dc:language":"sl","dc:publisher":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"dc:subject":[{"@xml:lang":"sl","#text":"citronska kislina"},{"@xml:lang":"sl","#text":"maghemit"},{"@xml:lang":"sl","#text":"nanodelci"},{"@xml:lang":"sl","#text":"silika"},{"@xml:lang":"sl","#text":"suspenzije"},{"@rdf:resource":"http://www.wikidata.org/entity/Q420924"}],"dcterms:temporal":{"@rdf:resource":"2000-2024"},"dc:title":{"@xml:lang":"sl","#text":"Sinteza magnetnih nanodelcev, funkcionaliziranih s tanko plastjo silike| Synthesis of magnetic nanoparticles functionalized with thin layer of silica|"},"dc:description":[{"@xml:lang":"sl","#text":"In this paper we describe the synthesis of maghemite nanoparticles coated with silica. The process was divided into three separate steps. In first step we have synthesized particles with co-precipitation of Fesup{2+} and Fesup{3+} ions. In the second step the particles were coated with citric acid in order to prevent agglomeration and dispersed in water. The success of dispersion was determined by weight percent of dispersed particles in water. The quantity of dispersed particles depends on pH value at which the citric acid was adsorbed on the surface of particles and on the concentration of dissolved citric acid. The third step was coating the nanoparticles with silica, which took place in the water suspension. The key factor for successful coating of nanoparticles with silica is the stability of suspension of nanoparticles coated with citric acid"},{"@xml:lang":"sl","#text":"V prispevku opisujemo pripravo maghemitnih nanodelcev prevlečenih s siliko. Postopek je potekal v treh ločenih stopnjah. V prvi smo delce sintetizirali s koprecipitacijo ionov Fena{2+} in Fena{3+}. V drugi smo delce prevlekli s citronsko kislino, da bi preprečili aglomeracijo, in jih dispergirali v vodi. Uspešnost dispergiranja smo spremljali z ugotavljanjem masnega deleža delcev, dispergiranih v vodi. Vsebnost delcev je odvisna od pH-vrednosti pri kateri secitronska kislina adsorbira na površini in koncentracije raztopljene citronske kisline. Tretja stopnja postopka je vsebovala prevlačenje nanodelcev s siliko, ki je potekalo v vodni suspenziji. Ključnega pomena za uspešno prevlačenje nanodelcev s siliko je stabilnost suspenzije nanodelcev oblečenih s citronsko kislino"}],"edm:type":"TEXT","dc:type":[{"@xml:lang":"sl","#text":"znanstveno časopisje"},{"@xml:lang":"en","#text":"journals"},{"@rdf:resource":"http://www.wikidata.org/entity/Q361785"}]},"ore:Aggregation":{"@rdf:about":"http://www.dlib.si/?URN=URN:NBN:SI:DOC-21RJONBA","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-21RJONBA"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-21RJONBA/5bd72abe-0d14-4f7a-bf21-273dd4317d3b/PDF"},"edm:rights":{"@rdf:resource":"http://rightsstatements.org/vocab/InC/1.0/"},"edm:provider":"Slovenian National E-content Aggregator","edm:intermediateProvider":{"@xml:lang":"en","#text":"National and University Library of Slovenia"},"edm:dataProvider":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:DOC-21RJONBA/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-21RJONBA"}}}}