Electrocatalytic and Photocatalytic Reduction of Carbon Dioxide to Carbon Monoxide using the Alkynyl-Substituted Rhenium(I) Complex (5,5´-bisphenylethynyl-2,2´-bipyridyl)Re(CO)3Cl

Engelbert Portenkirchner (Editor), Kerstin Oppelt, Christoph Ulbricht, Daniel Ayuk Mbi Egbe, Helmut Neugebauer, Günther Knör, Serdar Niyazi Sariciftci

Research output: Contribution to journalArticlepeer-review

Abstract

The rhenium complex fac-(5,5′-bisphenylethynyl-2,2′-bipyridyl)Re(CO)3Cl was used as a novel catalyst for the electro- and photochemical reduction of CO2 to CO in homogeneous solution. The results were compared to (2,2′-bipyridyl)Re(CO)3Cl as a benchmark compound. Cyclic voltammetric studies as well as bulk controlled potential electrolysis experiments were performed using a CO2 saturated solution in acetonitrile. (5,5′-bisphenylethynyl-2,2′-bipyridyl)Re(CO)3Cl showed a 6.5-fold increase in current density under CO2 at −1750 mV versus normal hydrogen electrode (NHE) as compared to the operation without CO2. Quantitative analysis by gas chromatography (GC) and infrared spectroscopy showed a Faradaic efficiency of around 45% for the formation of CO.
Original languageEnglish
Pages (from-to)19-25
Number of pages7
JournalJournal of Organometallic Chemistry
Volume716
DOIs
Publication statusPublished - 01 Oct 2012

Fields of science

  • 103 Physics, Astronomy
  • 104003 Inorganic chemistry
  • 204 Chemical Process Engineering
  • 104005 Electrochemistry
  • 104016 Photochemistry
  • 104017 Physical chemistry
  • 211908 Energy research
  • 105904 Environmental research

JKU Focus areas

  • Nano-, Bio- and Polymer-Systems: From Structure to Function
  • Engineering and Natural Sciences (in general)

Cite this