GENERAL ENQUIRIES: Tel: + 27 12 841 2911 | Email: callcentre@csir.co.za

Show simple item record

dc.contributor.author Motlatle, Abesach M
dc.contributor.author Kesavan Pillai, Sreejarani
dc.contributor.author Scriba, Manfred R
dc.contributor.author Ray, Suprakas S
dc.date.accessioned 2017-07-28T09:38:20Z
dc.date.available 2017-07-28T09:38:20Z
dc.date.issued 2016-10
dc.identifier.citation Motlatle, A.M., Pillai, S.K., Scriba, M.R. et al. 2016. Chemical synthesis, characterization and evaluation of antimicrobial properties of Cu and its oxide nanoparticles. Journal of Nanoparticle Research, vol. 18(312): DOI: 10.1007/s11051-016-3614-8 en_US
dc.identifier.issn 1388-0764
dc.identifier.uri DOI: 10.1007/s11051-016-3614-8
dc.identifier.uri http://link.springer.com/article/10.1007/s11051-016-3614-8
dc.identifier.uri http://hdl.handle.net/10204/9424
dc.description Copyright: 2016 Springer. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, kindly consult the publisher's website. en_US
dc.description.abstract Cu nanoparticles were synthesized using low-temperature aqueous reduction method at pH 3, 5, 7, 9 and 11 in presence of ascorbic acid and polyvinylpyrrolidone. The nanoparticles were characterized using transmission electron microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction techniques. Results demonstrated a strong dependence of synthesis pH on the size, shape, chemical composition and structure of Cu nanoparticles. While lower pH conditions of 3 and 5 produced Cu(sup0), higher pH levels (more than 7) led to the formation of Cu(sub2)O/CuO nanoparticles. The reducing capacity of ascorbic acid, capping efficiency of PVP and the resulting particle sizes were strongly affected by solution pH. The results of in vitro disk diffusion tests showed excellent antimicrobial activity of Cu(sub2)O/CuO nanoparticles against a mixture of bacterial strains (Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa), indicating that the size as well as oxidation state of Cu contributes to the antibacterial efficacy. The results indicate that varying synthesis pH is a strategy to tailor the composition, structure and properties of Cu nanoparticles. en_US
dc.language.iso en en_US
dc.publisher Springer en_US
dc.relation.ispartofseries Worklist;18476
dc.subject Cu nanoparticles en_US
dc.subject Chemical reduction en_US
dc.subject Antimicrobial properties en_US
dc.title Chemical synthesis, characterization and evaluation of antimicrobial properties of Cu and its oxide nanoparticles en_US
dc.type Article en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search ResearchSpace


Advanced Search

Browse

My Account