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  Oxygen Binding to Cobalt and Iron Phthalocyanines As Determined from in Situ X-ray Absorption Spectroscopy

Miedema, P. S., van Schooneveld, M. M., Bogerd, R., Rocha, T., Hävecker, M., Knop-Gericke, A., et al. (2011). Oxygen Binding to Cobalt and Iron Phthalocyanines As Determined from in Situ X-ray Absorption Spectroscopy. The Journal of Physical Chemistry C, 115(51), 25422-25428. doi:10.1021/jp209295f.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-3B93-3 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-758F-2
Genre: Journal Article

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Miedema, Piter S.1, Author
van Schooneveld, Matti M.1, Author
Bogerd, René1, Author
Rocha, Tulio2, Author           
Hävecker, Michael3, Author
Knop-Gericke, Axel2, Author           
de Groot, Frank M. F.1, Author
Affiliations:
1Inorganic Chemistry and Catalysis, Department Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands, ou_persistent22              
2Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
3Helmholtz-Zentrum Berlin/Bessy II, Albert-Einstein-Strasse 15, 12489 Berlin, Germany, ou_persistent22              

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 Abstract: Cobalt phthalocyanine (CoPc) and iron phthalocyanine (FePc) are possible oxygen reduction catalysts in fuel cells, but the exact functioning and deactivation of these catalysts is unknown. The electronic structure of the CoPc and FePc has been studied in situ under hydrogen and oxygen atmospheres by a combination of ambient-pressure X-ray photoelectron spectroscopy and X-ray absorption spectroscopy. The results show that when oxygen is introduced, the iron changes oxidation state while the cobalt does not. The data show that oxygen binds in an end-on configuration in CoPc, while for FePc side-on binding is most likely.

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Language(s): eng - English
 Dates: 2011-11-172011-12-29
 Publication Status: Issued
 Pages: -
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 Rev. Type: Peer
 Identifiers: DOI: 10.1021/jp209295f
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Title: The Journal of Physical Chemistry C
  Other : J. Phys. Chem. C
Source Genre: Journal
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Publ. Info: Washington DC : American Chemical Society
Pages: - Volume / Issue: 115 (51) Sequence Number: - Start / End Page: 25422 - 25428 Identifier: ISSN: 1932-7447
CoNE: https://pure.mpg.de/cone/journals/resource/954926947766