Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
July 15, 2014
ChemElectroChem 07/2014: Materials and Methods
Issue 7 contains a mixture of reviews, full papers, and communications covering very different areas in electrochemistry. In a Review, B. Van der Bruggen and colleagues describe "electrokinetic remediation" as a suitable technique for the restoration of saline soil and the control of seawater intrusion. In the Articles section, J. Roncali and co-workers report on the production of nanostructured conjugated polymers by electropolymerization of tailored tetrahedral precursors, and D. S. Silvester, D. W. M. Arrigan et al. present their results on the electrochemical characterization of an oleyl-coated magnetite nanoparticle-modified electrode. The Communication by P. Schmuki and colleagues shows that controlled thermal annealing can tune the photoelectrochemical properties of nanochanneled tin-oxide structures.
Recently Published Articles
- Distinctive Potential Behavior at the Oxidized Surface of a Semiconductor Device in a Concentrated Aqueous Salt Solution
Yuki Maekawa, Prof. Yasushi Shibuta and Prof. Toshiya Sakata
Article first published online: 22 JUL 2014 | DOI: 10.1002/celc.201402069
Concentrate on the potential! The unique potential behavior of a semiconductor-based ion sensor in concentrated aqueous NaCl solutions was found experimentally by using an on silico technique. These results were supported by in silico simulations, which enabled the identification of specific interfacial properties resulting from the spatial separation of ions and the hydration of ions, and the continuous shift of the potential profile based on ionic charges near the interface.
- Mechanistic Switching by Hydronium Ion Activity for Hydrogen Evolution and Oxidation over Polycrystalline Platinum Disk and Platinum/Carbon Electrodes
Tatsuya Shinagawa, Angel T. Garcia-Esparza and Prof. Kazuhiro Takanabe
Article first published online: 22 JUL 2014 | DOI: 10.1002/celc.201402085
pH matters: A comprehensive study of pH effects on the kinetics of hydrogen evolution and oxidation reactions (HER/HOR) using a polycrystalline Pt electrocatalyst, combined with microkinetic simulations, reveals that not only the activity, but also the reaction mechanism and rate-determining step can be altered. As a result, the apparently pH-dependent electrocatalysis is classified into acidic, neutral, and alkaline conditions.
- Electrodeposition of Zinc Nanorods from Ionic Liquid into Porous Anodic Alumina
Maksim Starykevich, Aleksey D. Lisenkov, Dr. Andrei N. Salak, Prof. Mario G. S. Ferreira and Prof. Mikhail L. Zheludkevich
Article first published online: 22 JUL 2014 | DOI: 10.1002/celc.201402130
Full-fillment in spite of barrier: 1D zinc nanowires are successfully obtained through two-step electrodeposition from ionic liquid into the porous anodic alumina template, without removing the barrier layer. Predeposition of metal at the bottom of the pores is carried out in alternating-current mode, followed by uniform filling of the pores in a galvanostatic regime (see picture).
- Discovery of New Oxygen Evolution Reaction Electrocatalysts by Combinatorial Investigation of the Ni–La–Co–Ce Oxide Composition Space
Dr. Joel A. Haber, Dan Guevarra, Dr. Suho Jung, Dr. Jian Jin and Dr. John M. Gregoire
Article first published online: 22 JUL 2014 | DOI: 10.1002/celc.201402149
Hit it again: A new Ce-rich family of active oxygen evolution reaction (OER) catalysts composed of earth-abundant elements, discovered using high-throughput methods, is reported. The addition of 20–65 % CeOx to previously investigated Ni–La–Co oxides produces new catalysts with increased electrocatalytic activity.
- Electrochemical Activation of Carbon–Halogen Bonds: Electrocatalysis at Palladium–Copper Nanoparticles
Dr. Christian Durante, Valentina Perazzolo, Dr. Abdirisak Ahmed Isse, Marco Favaro, Prof. Gaetano Granozzi and Prof. Armando Gennaro
Article first published online: 17 JUL 2014 | DOI: 10.1002/celc.201402032
Live at the Palladium: Palladised Cu nanoparticles with low Pd content are deposited on glassy carbon and tested for the catalytic reduction of CCl bonds in DMF and DMF/H2O (3:1 v/v). The electrodes show good electrocatalytic activities in both media and the presence of H2O does not reduce the stability of the nanoparticles, instead it remarkably enhances catalysis.