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dc.creatorJokić, Bojan
dc.creatorTanasković, Dušanka
dc.creatorJanković-Častvan, Ivona
dc.creatorDrmanić, Saša
dc.creatorPetrović, Rada
dc.creatorJanaćković, Đorđe
dc.date.accessioned2021-03-10T10:43:14Z
dc.date.available2021-03-10T10:43:14Z
dc.date.issued2007
dc.identifier.issn0884-2914
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/1090
dc.description.abstractNanosized calcium hydroxyapatite particles were synthesized by the catalytic decomposition of urea with urease. The influence of the synthesis parameters, i.e., temperature and ratio of the reagents/urease concentrations, on the size and morphology of the hydroxyapatite particles were investigated. As reagents for the synthesis of hydroxyapatite, various amounts of CaCl2, NaH2PO4, urea, and urease were used. The urease-catalyzed decomposition of urea leads to the homogeneous precipitation of hydroxyapatite because of the release of OH- ions during the hydrolysis of urea. In the same process, CO32- ions are also released and incorporated into the crystal structure of the hydroxyapatite. In the temperature range from 30-40 degrees C, it was found that low crystalline carbonate hydroxyapatite was formed in all cases. It was found that decreasing the ratio of the concentrations of the reagents to the urease concentration leads to decrease in the particle size to below 100 nm and the morphology changes from leafy-like to spherical.en
dc.publisherCambridge Univ Press, New York
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/142070/RS//
dc.rightsrestrictedAccess
dc.sourceJournal of Materials Research
dc.titleSynthesis of nanosized calcium hydroxyapatite particles by the catalytic decomposition of urea with ureaseen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage1161
dc.citation.issue5
dc.citation.other22(5): 1156-1161
dc.citation.rankM21
dc.citation.spage1156
dc.citation.volume22
dc.identifier.doi10.1557/JMR.2007.0170
dc.identifier.scopus2-s2.0-34250208704
dc.identifier.wos000246258300005
dc.type.versionpublishedVersion


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Приказ основних података о документу