Room temperature seed mediated growth of gold nanoparticles: mechanistic investigations and life cycle assesment

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dc.contributor.authorLeng, Weinanen
dc.contributor.authorPati, Paramjeeten
dc.contributor.authorVikesland, Peter J.en
dc.contributor.departmentCivil and Environmental Engineeringen
dc.date.accessed2016-03-17en
dc.date.accessioned2016-03-18T22:24:54Zen
dc.date.available2016-03-18T22:24:54Zen
dc.date.issued2015-08-04en
dc.description.abstractIn this study, we report the first room temperature seed-mediated synthesis of gold nanoparticles (AuNPs) in the presence of citrate and a gold salt. In contrast to citrate-reduction in boiling water, these mild reaction conditions provide expanded capacity to probe the mechanism of seed-mediated growth following gold salt addition. Moreover, comparative life cycle assessment indicates significant reductions in the environmental impacts for the room temperature synthesis. For this study, highly uniform gold seeds with Z-average diameter of 17.7 +/- 0.8 nm and a polydispersity index of 0.03 +/- 0.01 were prepared by a pH controlled protocol. We investigated the AuNP growth mechanism via time resolved UV-vis spectroscopy, dynamic light scattering, and transmission electron microscopy. This study indicates that citrate and its oxidation byproduct acetone dicarboxylate serve to bridge and gather Au(iii) ions around gold nanoparticle seeds in the initial growth step.en
dc.description.notesContains supplementary information fileen
dc.description.notes2015 Royal Society of Chemistry Open Access Gold Articleen
dc.description.sponsorshipVirginia Tech. Graduate School. Sustainable Nanotechnology Interdisciplinary Graduate Education Program (VTSuN IGEP)en
dc.description.sponsorshipVirginia Tech. Institute for Critical Technology and Applied Scienceen
dc.description.sponsorshipNational Science Foundation (U.S.)en
dc.format.extent15 p.en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationLeng, W., Pati, P., & Vikesland, P. J. (2015). Room temperature seed mediated growth of gold nanoparticles: mechanistic investigations and life cycle assesment. Environmental Science: Nano, 2(5), 440-453. doi:10.1039/C5EN00026Ben
dc.identifier.doihttps://doi.org/10.1039/C5EN00026Ben
dc.identifier.issn2051-8153en
dc.identifier.issue5en
dc.identifier.other2015_Leng_Room_temperature_seed_mediated_growt.pdfen
dc.identifier.otherRoom_temperature_seed_mediated_supp.pdfen
dc.identifier.otherCBET-1133746en
dc.identifier.urihttp://hdl.handle.net/10919/64956en
dc.identifier.volume2en
dc.language.isoenen
dc.publisherThe Royal Society of Chemistryen
dc.rightsCreative Commons Attribution-NonCommercial 3.0 Unporteden
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/en
dc.titleRoom temperature seed mediated growth of gold nanoparticles: mechanistic investigations and life cycle assesmenten
dc.title.serialEnvironmental Science: Nanoen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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