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Volume 2, Issue 5 (Oct 2013)

Issues

Metal oxide and bimetallic nanoparticles in ionic liquids: synthesis and application in multiphase catalysis

Martin H.G. Prechtl / Paul S. Campbell
Published Online: 2013-07-23 | DOI: https://doi.org/10.1515/ntrev-2013-0019

Abstract

Ionic liquids (ILs) are well established as solvents and stabilizing agents for the synthesis of metallic nanoparticles (NPs) in general. The physicochemical properties of ILs and the supramolecular organization in the liquid state are capable of directing the growth of transition metal NPs generated in situ and to subsequently protect and stabilize them. Until now, many different NPs have been successfully synthesized within these media; however, the synthesis of metal oxide and bimetallic alloy or core-shell NPs in ILs is still relatively rare. Herein, we summarize the current state-of-the-art of the synthetic methods for these materials and their application in the broad field of catalysis, including multiphase systems, hydrogenation, dehydrogenation, functionalization, as well as defunctionalization reactions.

Keywords: bimetallic; catalysis; ionic liquids; metal oxides; nanoparticles

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About the article

Martin H.G. Prechtl

Martin H.G. Prechtl studied chemistry and food chemistry (1999–2004) at the University of Wuppertal (Germany) and at the University of São Paulo (Brazil). He performed research in homogeneous catalysis at the Max Planck Institute for Coal Research (Germany) and obtained his PhD from RWTH Aachen in 2007 under the supervision of Walter Leitner and David Milstein (Weizmann Institute, Israel). As Feodor Lynen fellow of the Alexander von Humboldt Foundation, he performed research about “nanocatalysis in ionic liquids” with Jairton Dupont at the Federal University of Rio Grande do Sul (UFRGS) in Porto Alegre (Brazil) and with Thomas Braun and Erhard Kemnitz at the Humboldt University Berlin (Germany) from 2007 to 2010 in the field of nanoscale catalysts in multiphase systems. He received the Scientist Returnee Award 2009 (MIWF-NRW) and accepted a call of the University of Cologne as an independent group leader in 2010. He coauthored 30 articles and book chapters and edited one special issue about nanocatalysis.

Paul S. Campbell

Paul S. Campbell graduated with a Master’s degree in Chemistry (MChem) from Durham University, UK, in 2007. He then obtained his PhD in 2010 at the Université Claude Bernard Lyon 1, France, under the guidance of Dr. C. Santini and Nobel Laureate Yves Chauvin. There he investigated ILs as media for the separation of zirconium and hafnium as well as for metal NP synthesis and in situ catalysis. Since 2011, he has been an Alexander von Humboldt research fellow with Prof. A.-V. Mudring at the Ruhr-Universität Bochum, Germany, where his research interests include the use of ILs as a novel means to obtain advanced luminescent materials. He currently holds four patents and has coauthored 15 articles covering a broad range of aspects in IL chemistry.


Corresponding author: Martin H.G. Prechtl, Institut für Anorganische Chemie, Universität zu Köln, Greinstr. 6, 50939 Köln, Germany


Received: 2013-04-11

Accepted: 2013-06-05

Published Online: 2013-07-23

Published in Print: 2013-10-01


Citation Information: Nanotechnology Reviews, ISSN (Online) 2191-9097, ISSN (Print) 2191-9089, DOI: https://doi.org/10.1515/ntrev-2013-0019.

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