School of Physical and Chemical Sciences Te Kura Matū Seminar Series

Nanomaterials obtained by chemical synthesis: design, characterization and applications

Speaker

Paula C. Angelomé

Institute

Gerencia Química & Instituto de Nanociencia y Nanotecnología

Time & Place

Fri, 22 Feb 2019 11:00:00 NZDT in West 701, Level 7

All are welcome

Abstract

The preparation of nanomaterials by soft chemistry methods is extremely versatile and allows obtaining a great variety of structures with physicochemical properties adjusted from the synthesis. Thanks to these techniques, it is possible to design devices with finely tuned characteristics, according to the projected application. The synthesis and characterization of composite materials based on mesoporous oxide thin films and metallic nanoparticles will be described. Firstly, it will be shown that combining sol gel reactions and amphiphilic molecules self-assembly it is possible to obtain a wide range of metallic and hybrid mesoporous oxides. Secondly, the obtention of metallic nanoparticles by highly controlled soft chemical methods will be presented. Afterwards, the preparation of several architectures that combine both kinds of nanomaterials will be described (see Figure), along with a description of the characterization methods  used to determine the composite’s structure.

Finally, I will present some examples of the use of the obtained composite materials as catalysts, electrochemical sensors of arsenic1 and surface-enhanced Raman spectroscopy based sensors.2 Particular attention will be given to the relation between composite’s properties and its performance.

References:

1. R. Coneo Rodríguez, M.M. Bruno, P.C. Angelomé, Sens. Actuators, B 2018, 254, 603-612.

2. M.M. Zalduendo, J. Langer, J.J. Giner Casares, E.B. Halac, G. Soler-Illia, L.M. Liz-Marzán, P.C.

Angelomé, J. Phys. Chem. C, 2018, 122, 13095–13105. 100 nm

All Welcome

Biography

Paula C. Angelomé was born in Buenos Aires, Argentina, in 1979. She studied Chemistry at University of Buenos Aires, where she got her degree in 2003. Immediately afterwards, she started her PhD at CAC-CNEA, under the supervision of Prof. Soler-Illia. During her doctoral thesis, finished in 2008, she worked on synthesis and characterization of mesoporous metallic, mixed and hybrid oxide thin films. Between 2008 and 2012 she was a postdoctoral fellow in the Colloid Chemistry Group (University of Vigo, Spain) under the direction of Prof. Liz-Marzán, working on synthesis and applications of metallic nanoparticles and composites. She came back to CNEA in 2012, as a CONICET Researcher and, since 2017, she holds an Independent Research position. She has published more than 30 scientific papers and has been in charge of various national and international research projects. She has co-supervised 2 PhD thesis and is currently supervising other 3. She has also supervised a MSc thesis and several degree students.