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A Microfluidic Device for the Investigation of Rapid Gold Nanoparticle Formation in Continuous Turbulent Flow

Hofmann, G; Tofighi, G; Rinke, G; Baier, S; Ewinger, A; Urban, A; Wenka, A; Heideker, S; Jahn, A; Dittmeyer, R; Grunwaldt, J-D

A new setup with an integrated microfluidic chip with small dead time, high time resolution and compatibility with in situ X-ray absorption (XAS) measurements is presented. It can also be combined with a free liquid jet. By using the microfluidic chip the short reaction times from 2 to 20 milliseconds can be observed, beyond that an external cyclone mixer for extended observation times was applied. The reduction of gold ions with tetrakis(hydroxy-methyl)phosphonium (THPC) has been investigated in the microfluidic setup to monitor this reaction yielding small gold nanoparticles, requiring preferentially a free liquid jet.

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DOI: 10.5445/IR/1000068549
DOI: 10.1088/1742-6596/712/1/012072
Zitationen: 5
Zugehörige Institution(en) am KIT Institut für Technische Chemie und Polymerchemie (ITCP)
Institut für Mikroverfahrenstechnik (IMVT)
Institut für Katalyseforschung und -Technologie (IKFT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator ISSN: 1742-6588, 1742-6596
KITopen-ID: 1000068549
HGF-Programm 34.12.01 (POF III, LK 01)
Erschienen in Journal of physics / Conference Series
Band 712
Heft 1
Seiten Art. Nr.: 012072
Bemerkung zur Veröffentlichung 16th International Conference on X-Ray Absorption Fine Structure, XAFS 2015; Karlsruhe Institute of Technology (KIT)Karlsruhe; Germany; 23 August 2015 through 28 August 2015
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