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  Monodisperse titania microspheres via controlled nanoparticle aggregation

Schunk, D., Hardt, S., Wiggers, H., & Marlow, F. (2012). Monodisperse titania microspheres via controlled nanoparticle aggregation. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 14(20), 7490-7496. doi:10.1039/c2cp40658f.

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 Creators:
Schunk, Daniel1, Author           
Hardt, Sebastian2, Author
Wiggers, Hartmut2, Author
Marlow, Frank1, 2, Author           
Affiliations:
1Research Group Marlow, Max-Planck-Institut für Kohlenforschung, Max Planck Society, Kaiser-Wilhelm-Platz 1, 45470 Mülheim, ou_1445612              
2Univ Duisburg Essen, Inst Combust & Gas Dynam, 47048 Duisburg, ou_1309545              

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Free keywords: MICROFLUIDIC DEVICE; PARTICLES; EMULSIONS; ARRAYS; GEL
 Abstract: This paper describes the fabrication of highly monodisperse TiO2 nanoparticle aggregates (NPAs) by controlled aggregation of nanoparticles in a water-in-oil emulsion. Equally sized drops containing a titanium dioxide nanoparticle suspension are produced in a T-channel device. This procedure has a high tuning potential. Increasing the velocity of the titania suspension phase leads to an enlargement of the droplets, while raising the velocity of the oil phase reduces the drop diameter. The technique enables the preparation of monodisperse (<2%) drops between 150 and 400 mm in diameter. Evaporation of the suspension medium leads to nanoparticle aggregates. There is no significant change in dispersity from emulsion drops to NPAs, if the drying is carried out slowly.

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 Dates: 2012
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1039/c2cp40658f
ISSN: 1463-9076
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Title: PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 14 (20) Sequence Number: - Start / End Page: 7490 - 7496 Identifier: -