caa a22 4500 606174435 CHVBK 20210128100738.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s11244-015-0489-3 doi (NATIONALLICENCE)springer-10.1007/s11244-015-0489-3 Koper Marc Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300 RA, Leiden, The Netherlands aut Volcano Activity Relationships for Proton-Coupled Electron Transfer Reactions in Electrocatalysis [Elektronische Daten] [Marc Koper] This paper studies simple kinetic models for proton-coupled electron transfer reactions, and demonstrates that for reactions in which proton and electron do not transfer simultaneously, pH dependence of the overall reaction rate is expected. In particular, if the current is evaluated on the reversible hydrogen scale, this may lead to volcano-type activity relations as a function of pH. In case that an acid-base equilibrium is part of the mechanism, the optimal pH occurs close to the pKa of this equilibrium. The Author(s), 2015 Electrocatalysis nationallicence Proton-coupled electron transfer nationallicence Volcano plot nationallicence pH dependence nationallicence Topics in Catalysis Springer US; http://www.springer-ny.com 58/18-20(2015-11-01), 1153-1158 1022-5528 58:18-20<1153 2015 58 11244 https://doi.org/10.1007/s11244-015-0489-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11244-015-0489-3 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Koper Marc Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300 RA, Leiden, The Netherlands aut NATIONALLICENCE 773 0- Topics in Catalysis Springer US; http://www.springer-ny.com 58/18-20(2015-11-01), 1153-1158 1022-5528 58:18-20<1153 2015 58 11244