Bio-inspired nanocatalysts for the oxygen reduction reaction

Electrochemical conversions at fuel cell electrodes are complex processes. In particular, the oxygen reduction reaction has substantial overpotential limiting the electrical power output efficiency. Effective and inexpensive catalytic interfaces are therefore essential for increased performa...

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Detalles Bibliográficos
Autores principales: Grumelli, Doris Elda, Wurtser, Benjamin, Stepanow, Sabastian, Kern, Klaus
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Física
Nanoscale materials
STM
UHV
Electrocatalysis
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/104632
http://hdl.handle.net/11336/5313
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-104632
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Nanoscale materials
STM
UHV
Electrocatalysis
spellingShingle Física
Nanoscale materials
STM
UHV
Electrocatalysis
Grumelli, Doris Elda
Wurtser, Benjamin
Stepanow, Sabastian
Kern, Klaus
Bio-inspired nanocatalysts for the oxygen reduction reaction
topic_facet Física
Nanoscale materials
STM
UHV
Electrocatalysis
description Electrochemical conversions at fuel cell electrodes are complex processes. In particular, the oxygen reduction reaction has substantial overpotential limiting the electrical power output efficiency. Effective and inexpensive catalytic interfaces are therefore essential for increased performance. Taking inspiration from enzymes, earth-abundant metal centres embedded in organic environments present remarkable catalytic active sites. Here we show that these enzyme-inspired centres can be effectively mimicked in two-dimensional metal-organic coordination networks self-assembled on electrode surfaces. Networks consisting of trimesic acid and bis-pyridyl-bispyrimidine coordinating to single iron and manganese atoms on Au(111) effectively catalyse the reduction and reveal distinctive catalytic activity in alkaline media. These results demonstrate the potential of surface-engineered metal-organic networks for electrocatalytic conversions. Specifically designed coordination complexes at surfaces inspired by enzyme cofactors represent a new class of nanocatalysts with promising applications in electrocatalysis.
format Articulo
Articulo
author Grumelli, Doris Elda
Wurtser, Benjamin
Stepanow, Sabastian
Kern, Klaus
author_facet Grumelli, Doris Elda
Wurtser, Benjamin
Stepanow, Sabastian
Kern, Klaus
author_sort Grumelli, Doris Elda
title Bio-inspired nanocatalysts for the oxygen reduction reaction
title_short Bio-inspired nanocatalysts for the oxygen reduction reaction
title_full Bio-inspired nanocatalysts for the oxygen reduction reaction
title_fullStr Bio-inspired nanocatalysts for the oxygen reduction reaction
title_full_unstemmed Bio-inspired nanocatalysts for the oxygen reduction reaction
title_sort bio-inspired nanocatalysts for the oxygen reduction reaction
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/104632
http://hdl.handle.net/11336/5313
work_keys_str_mv AT grumellidoriselda bioinspirednanocatalystsfortheoxygenreductionreaction
AT wurtserbenjamin bioinspirednanocatalystsfortheoxygenreductionreaction
AT stepanowsabastian bioinspirednanocatalystsfortheoxygenreductionreaction
AT kernklaus bioinspirednanocatalystsfortheoxygenreductionreaction
bdutipo_str Repositorios
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