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Electrochemical approaches in synthesis of high surface area materials

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Rafailovic_RSE_SEE7.pdf (876.1Kb)
Authors
Rafailović, Lidija D.
Gammer, Christoph
Trišović, Tomislav
Lutzer, Bernhard
Rentenberger, Christian
Jovanović, Aleksandar z.
Pašti, Igor
Karnthaler, Hans-Peter
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Abstract
It is the aim of our work to carry out fundamental studies on designing and synthesizing high surface area functionalized foam and ordered structures for their potential sensing and energy related applications. We combine electrochemical synthesis with structural studies on different length scales including transmission electron microscopy. Templates are directly grown by electrodeposition, either by hydrogen bubble formation or by utilizing of ordered structures formed by anodic electrochemical oxidation. [1-3] We employed an elegant approach to obtain open, foam deposits of Ni and Ni alloys, by using electrodeposition at high current densities, to promote hydrogen evolution and bubble templating (cf. Fig.1). [1] In the next step, the high surface area of such materials was funtionalized by Pd utilizing galvanic displacement reaction. Electrochemical testing of the obtained open foam deposits shows promissing catalytical activity for hydrogen evolution in alkaline environments, as wel...l as methanol and ethanol oxidation. In the case of fabrication of nanodendritic Ag simultaneously grown with porous anodic aluminium oxide we accomplished well anchored dendritic Ag nanostructures [2] of long-term stability [3]. 1. L. D. Rafailović, C. Gammer, C. Rentenberger, T. Trišović, C. Kleber, H. P. Karnthaler, Nano Energy, 2 (2012) 523 https://doi.org/10.1016/j.nanoen.2012.12.004 2. L.D. Rafailovic, C. Gammer, C. Rentenberger, T. Trisovic, C. Kleber, H.P. Karnthaler, Adv. Mater. 27 (2015) 6438 https://doi.org/10.1002/adma.201502451 3. L.D. Rafailovic, C. Gammer, J. Srajer, T. Trisovic, J. Rahel, H.P. Karnthaler; RSC Adv., 6 (2016) 33348, https://doi.org/10.1039/c5ra26632g

Keywords:
electrochemical synthesis / electrodeposition / nanodendritic Ag / Ni alloys
Source:
Book of abstracts / 7th Regional Symposium on Electrochemistry – South East Europe & 8th Kurt Schwabe Symposium, Split, Croatia, May 27-30, 2019, 2019, 35-35
Publisher:
  • International Association of Physical Chemists

ISBN: 978-953-56942-7-4

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URI
http://dais.sanu.ac.rs/123456789/7013
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  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
Institution
Институт техничких наука САНУ / Institute of Technical Sciences SASA

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