Selective solar-driven reduction of CO2 to methanol using a catalyzed p-GaP based photoelectrochemical cell

Emily E. Barton, David M. Rampulla, Andrew Bruce Bocarsly

Research output: Contribution to journalArticlepeer-review

573 Scopus citations


With rising atmospheric CO2 levels, there has been increasing interest in artificial photosynthetic schemes for converting this greenhouse gas into valuable fuels and small organics. Photoelectrochemical schemes for activating the inert CO2 molecule, however, operate at excessive overpotentials and thus do not convert actual light energy to chemical energy. Here we describe the selective conversion of CO2 to methanol at a p-GaP semiconductor electrode with a homogeneous pyridinium ion catalyst, driving the reaction with light energy to yield faradaic efficiencies near 100% at potentials well below the standard potential.

Original languageEnglish (US)
Pages (from-to)6342-6344
Number of pages3
JournalJournal of the American Chemical Society
Issue number20
StatePublished - May 21 2008

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry


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