Platt_Manuscript-15-05-17.pdf (878.71 kB)
Synthesis of gold nanoparticles using the interface of an emulsion droplet
journal contribution
posted on 2017-06-06, 08:13 authored by Suchanuch Sachdev, Rhushabh Maugi, Jack Woolley, Caroline Kirk, Zhaoxia ZhouZhaoxia Zhou, Steven ChristieSteven Christie, Mark PlattMark PlattA facile and rapid method for synthesising single crystal gold spherical or platelet (non-spherical) particles is reported. The reaction takes place at the interface of two immiscible liquids where the reducing agent decamethylferrocene (DmFc) was initially added to hexane, and gold chloride (AuCl4-) to an aqueous phase. The reaction is spontaneous at room temperature, leading to the creation of Au nanoparticles, (AuNP). A flow focusing microfluidic chip was used to create emulsion droplets allowing the same reaction take place within a series of microreactors. The technique allows the number of droplets, their diameter and even the concentration of reactants in both phases to be controlled. The size and shape of the AuNP is dependent upon the concentration of the reactants and the size of the droplets. By tuning the reaction parameters the synthesised nanoparticles vary from nanometre to micron sized spheres or platelets. The surfactant used to stabilise the emulsion was also shown to influence the particle shape. Finally, the addition of other nanoparticles within the droplet allows for core@shell particles to be readily formed, and we believe this could be a versatile platform for the large scale production of core@shell particles.
Funding
The work was supported by the European Commission for Research (PCIG11-GA-2012-321836 Nano4Bio).
History
School
- Science
Department
- Chemistry
Published in
LangmuirCitation
SACHDEV, S. ...et al., 2017. Synthesis of gold nanoparticles using the interface of an emulsion droplet. Langmuir, 33(22), pp 5464–5472.Publisher
American Chemical SocietyVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2017-03-15Publication date
2017Notes
This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acs.langmuir.7b00564.ISSN
0743-7463eISSN
1520-5827Publisher version
Language
- en