Projects per year
Abstract
This study investigates electroosmotic flow (EOF) with sodium tetraborate buffer in nanoporous anodized alumina membranes. Membranes with pore diameters ranging from 8 to 100 nm have been fabricated with narrow pore size distributions to systematically investigate the effect of pore diameter on the electroosmosis (EO) pumping down to the electric double layer overlap region. EOF was observed in membranes with pore diameters in and below this region, along with evidence of concentration polarization (CP), which resulted in a significant reduction in flux. The initial flux, though, could be fully recovered by temporarily reversing the flow and dislodging the accumulated ion layer from the feed side of the membrane. Stable pumping for up to 2 h was obtained before any flux reduction caused by CP was observed.
Original language | English |
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Pages (from-to) | 711-719 |
Number of pages | 9 |
Journal | Microfluidics and Nanofluidics |
Volume | 16 |
Issue number | 4 |
DOIs | |
Publication status | Published - Apr 2014 |
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Dive into the research topics of 'Electroosmotic flow in nanoporous membranes in the region of electric double layer overlap'. Together they form a unique fingerprint.Projects
- 1 Finished
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Mass Transport at the Nanoscale
Mattia, D. (PI) & Leese, H. (Researcher)
Engineering and Physical Sciences Research Council
1/10/09 → 28/06/13
Project: Research council
Profiles
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Davide Mattia
- Department of Chemical Engineering - Professor
- Institute of Sustainability and Climate Change
- Centre for Integrated Materials, Processes & Structures (IMPS)
Person: Research & Teaching, Core staff, Affiliate staff
Equipment
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MC2-Electron Microscopy (EM)
Material and Chemical Characterisation (MC2)Facility/equipment: Technology type