Deposition and aggregation of Au at the liquid/liquid interface
Campbell, A. and Haw, Mark D. (2009) Deposition and aggregation of Au at the liquid/liquid interface. Analytical Sciences, 25 (2). pp. 307-310. (http://dx.doi.org/10.2116/analsci.25.307)
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The mesostructure of nanoparticle stabilized interfacial films, in systems such as particle stabilized emulsions, plays a key, yet little understood, role. We have studied a system of gold nanoparticles being formed and aggregating at a planar oil/water interface using optical microscopy. A rapid "nucleation" step of meso (micron) scale aggregates was observed. Aggregation of the meso aggregates to form a percolating structure is seen to switch from a slow to a fast aggregation regime. Aggregation in the slow regime appears to be reaction limited. We tentatively attribute the fast aggregation regime to a capillary attraction.
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Item type: Article ID code: 13534 Dates: DateEvent2009PublishedSubjects: Science > Chemistry
Science > Physics > Solid state physics. NanoscienceDepartment: Faculty of Engineering > Chemical and Process Engineering Depositing user: Dr Mark Haw Date deposited: 27 Nov 2009 11:43 Last modified: 08 Apr 2024 17:07 URI: https://strathprints.strath.ac.uk/id/eprint/13534