Biomimetic spherical silica production using phosphatidylcholine and soy lecithin

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dc.contributor.authorCurley, Ricky
dc.contributor.authorRussell A.
dc.contributor.authorBanta, Russell A.
dc.contributor.authorHolmes, Justin D.
dc.contributor.authorFlynn, Eoin J.
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderGlantreo Ltd., Irelanden
dc.date.accessioned2021-05-19T15:28:16Z
dc.date.available2021-05-19T15:28:16Z
dc.date.issued2021-04-17
dc.date.updated2021-05-19T10:41:28Z
dc.description.abstractSpherical silica particles are traditionally made via Stöber and modified-Stöber processes, which commonly use environmental toxins as reagents. Here we report a process to synthesise spherical silica particles using environmentally friendly biomolecules (phosphatidylcholine and soy lecithin) and employing water and soybean oil as solvents, rather than potentially harmful organic solvents. This scalable method represents an important step towards sustainable industrial silica syntheses. Under mildly acidic conditions phosphatidylcholine and soy lecithin can control the condensation of sodium silicate to form discrete, spherical silica particles. Silica particles with diameters ranging between 329 and 2232 nm were readily produced using phosphatidylcholine as the templating agent and soybean oil as the solvent in the presence of sodium silicate. Narrower size distributions (262–1272 nm) were achieved using soy lecithin as the templating agent in an aqueous acetate buffer solution containing sodium silicate. Silica particles grown using low concentrations of phosphatidylcholine and soy lecithin as templating agents formed by a combination of coalescence and Ostwald ripening, whilst particles grown at high concentrations predominantly formed through Ostwald ripening behaviour. The possibility of sustainably producing spherical silica particles in a simple biomolecule-templated synthesis is shown.en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationCurley, R., Banta, R. A., Garvey, S., Holmes, J. D. and Flynn, E. J. (2021) 'Biomimetic spherical silica production using phosphatidylcholine and soy lecithin', Applied Nanoscience, 11(5), pp. 1721-1735. doi: 10.1007/s13204-021-01839-yen
dc.identifier.doi10.1007/s13204-021-01839-yen
dc.identifier.endpage1735en
dc.identifier.issn2190-5509
dc.identifier.issued5en
dc.identifier.journaltitleApplied Nanoscience (Switzerland)en
dc.identifier.startpage1721en
dc.identifier.urihttps://hdl.handle.net/10468/11358
dc.identifier.volume11en
dc.language.isoenen
dc.publisherSpringeren
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Centres/12/RC/2278/IE/Advanced Materials and BioEngineering Research Centre (AMBER)/en
dc.relation.urihttps://link.springer.com/article/10.1007/s13204-021-01839-y
dc.rights© King Abdulaziz City for Science and Technology 2021. This is a post-peer-review, pre-copyedit version of an article published in Applied Nanoscience. The final authenticated version is available online at: http://dx.doi.org/10.1007/s13204-021-01839-yen
dc.subjectBiomimetic synthesisen
dc.subjectBiomineralisationen
dc.subjectBiomoleculesen
dc.subjectSpherical silicaen
dc.subjectStöber processen
dc.titleBiomimetic spherical silica production using phosphatidylcholine and soy lecithinen
dc.typeArticle (peer-reviewed)en
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