title: Reversible electrochemical conversion between Rh(II) and Rh(III) states in Rh porphyrin adsorbed on carbon black.
abstract: We have clearly demonstrated reversible cyclic voltammograms for the redox reaction between the Rh(II) and Rh(III) states in rhodium octaethylporphyrin [Rh(OEP)] adsorbed on carbon black in an acidic aqueous solution. The emergence of the reversible wave can be ascribed to the suppression of the undesirable reactions between two molecules of [Rh(II)(OEP)] because of its strong interaction with the carbon black. The generated [Rh(II)(OEP)] exhibits a potent catalytic O(2) reduction activity.
authors.affiliation: Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan. s-yamazaki@aist.go.jp
authors.forename: Shin-ichi
authors.initials: S
authors.lastname: Yamazaki
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Yamada
authors.forename: Kazuaki
authors.initials: K
authors.lastname: Yasuda