The large-scale production of nanomaterials with fine control over their shape, size and properties remains a major obstacle towards their further use. Here, the semi-continuous production of metal oxide nanoparticles (NPs) via membrane emulsification (ME) is reported for the first time, using an oil-in-water emulsion and a commercial stirred ME setup fitted with a novel ring-shaped anodic alumina membrane (AAM). A systematic investigation of process parameters showed that the narrow pore size distribution of AAMs resulted in a narrow size distribution of both droplets and particles, with Ddroplet/Dpore as small as 2.8, compared to typical literature values of 10 or more. The average particle size was 4.2 ± 0.5 nm and 18 ± 4 nm for the as-synthetized and calcined NPs, respectively. Calculations of the emulsion production rate demonstrate the potential of the ME setup to produce up to 1 kg of NP per hour per metre squared of membrane.
|Number of pages||9|
|Journal||Applied Surface Science|
|Early online date||30 Aug 2018|
|Publication status||Published - 1 Jan 2019|
- Anodic alumina membrane
- Membrane emulsification
ASJC Scopus subject areas
- Surfaces, Coatings and Films
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- Centre for Sustainable and Circular Technologies (CSCT)
- Department of Chemical Engineering - Professor
- Faculty of Engineering and Design - Deputy Dean
- Institute for Sustainability
- Centre for Integrated Materials, Processes & Structures (IMPS)
Person: Research & Teaching, Core staff
Dataset for 'Semi-continuous production of iron oxide nanoparticles via membrane emulsification'
Mattia, D. (Creator) & Medina Llamas, M. (Creator), University of Bath, 30 Aug 2018