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Ionic Liquids: Applications in the Chemical-, Electro- and Bio- Sciences

Douglas R. MacFarlane
Australian Centre for Electromaterials Science
Monash University,
Victoria, Australia
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July 24th, 2013
15h00m
Catalonia Institute for Energy Research (IREC)
Venue: sala d’actes
Ionic liquids are simply organic salts that have melting point below 100°C. As liquid salts they offer a range of solvency properties distinctly different from normal molecular solvents. In addition to this, they are often very stable - thermally, chemically and electrochemically. They have thus found application in a wide variety of contexts from green chemistry to medicinal chemistry, electrochemistry and more recently in the biochemical and biosciences.
By way of example, recent work has shown that many medicinally active compounds can be ionic liquids when combined with an appropriate counter-ion, opening up a huge range of new, and in some cases dual-active, pharmaceuticals. They can also be used as novel stabilising solvents for proteins, the stability of the protein being much enhanced both with respect to thermal denaturation and also chemical degradation. They have been shown to be very useful in the electro-deposition of metals and semiconductors, including water-splitting catalysts, and as electrolyte solvents for batteries and solar cells. Their electrochemical and thermal properties have led to the development of applications in corrosion protection and in lubrication. Certain selected examples are excellent solvents for biopolymers such as cellulose and lignin.
This talk will survey these fields and discuss future directions emerging in this fascinating new area of chemistry.
Selected references:
1) Stoimenovski, J.; MacFarlane, D. R.; Bica, K.; Rogers, R. D., Crystalline vs. Ionic Liquid Salt Forms of Active Pharmaceutical Ingredients: A Position Paper. Pharm. Res. 2010, 27, 521-526.
2) Ionic liquid materials for the electrochemical challenges of the future M. Armand, F. Endres D. R. MacFarlane, H. Ohno, B. Scrosati, Nature Materials, 2009, 8, 621-62.
 

Jornada de conversió d'energia

 

Venue: Sala d'actes de L'IREC

ORGANIZAZER: Xarxa de Referència en Materials Avançats per l'Energia

Date: 19th July 2013

Conference Program

 

 

 


 

The Functional Nanomaterials Group invites you to the seminar:

 

"Searching for oxide thermoelectrics: Ru pyrochlores, datamining, and beyond"

 

Tuesday, July 9th, 2013

11:30 am

Sala d'Actes de la Universitat de Barcelona

 

Michael W. Gaultois

Materials Research Laboratory,
University of California, Santa Barbara, CA (USA)

 

 

I describe the creation of a large database of thermoelectric materials prepared by abstracting information from over 100 publications. The database has over 18 000 data points from multiple classes of compounds, whose relevant properties have been measured at several temperatures. Appropriate visualization of the data immediately allows certain insights to be gained with regard to the property space of plausible thermoelectric materials. Of particular note is that any candidate material needs to display an electrical resistivity value that is close to 1 mΩ cm at 300 K, that is, samples should be significantly more conductive than the Mott minimum metallic conductivity. The Herfindahl–Hirschman index, a commonly accepted measure of market concentration, has been calculated from geological data (known elemental reserves) and geopolitical data (elemental production) for much of the periodic table. The visualization strategy employed here allows rapid sorting of thermoelectric compositions with respect to important issues of elemental scarcity and supply risk

   

Nuevos diseños de termogeneradores para nuevos mercados comerciales:

aspectos térmicos y comerciales”.

 

Venue: Sala d'actes de L'IREC

ORGANIZAZER: Xarxa de Referència en Materials Avançats per l'Energia

Date: 5th July 2013

L'IREC i la XaRMAE conviden al Prof. Luis Juanico del 'centro Atómico de Bariloche' d'Argentina a a impartir una conferència sobre la relació entre els aspectes tèrmics i comercials dels termogeneradors de nova generació.

 

Understanding carrier dynamics in water splitting with metal oxide semiconductors

 

Sixto Giménez
Grup de Dispositius Fotovoltaics i Optoelectrònics Departament de Física, Universitat Jaume I 12071 Castelló -- Spain

 

July 3rd, 2013
Catalonia Institute for Energy Research (IREC)
Venue: University of Barcelona
Spain

 

In the last years, water splitting with metal oxide semiconductors has attracted a great deal of attention as a promising technology to provide fuels with the only input of sunlight. Metal oxide semiconductors appear as candidate systems to photo-oxidize water and nanostructuring strategies together with the addition of co-catalysts have been widely employed in order to increase the energy conversion efficiency. In this context, the basic understanding of the traffic of carriers leading to the interfacial electrochemical reactions is a key issue to rationalize the both synthetic routes for materials development and device engineering. In the present talk, we will focus on the interpretation of carrier dynamics based on physical modeling of photoelectrochemical devices fed by experimental results obtained from electrochemical characterization (cyclic voltammetry and impedance spectroscopy). We will examine the role of surface states on water oxidation with Fe2O3 and the effect of catalytic layers of Cobalt and Irididum based systems.

   

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