TY - JOUR
T1 - CO2electroreduction on bimetallic Pd-In nanoparticles
AU - Pavesi, Davide
AU - Ali, Farhan S.M.
AU - Anastasiadou, Dimitra
AU - Kallio, Tanja
AU - Figueiredo, Marta
AU - Gruter, Gert Jan M.
AU - Koper, Marc T.M.
AU - Schouten, Klaas Jan P.
N1 - Funding Information:
This research has been supported by the European Commission (Research Executive Agency) grant Elcorel (Nr 722614) under the Marie Sklodowska-Curie Innovative Trainings Network. This work made use of Aalto University Nano Microscopy Center (Aalto-NMC) facilities.
Publisher Copyright:
© The Royal Society of Chemistry.
PY - 2020/7/7
Y1 - 2020/7/7
N2 - CO2 electroreduction powered by renewable energy is an attractive strategy to recycle air-based carbon. One of the current challenges for the scale up of the technology is that the catalysts that show high faradaic yield at high current density (post-transitional metals such as In, Sn, Bi, Pb) suffer from very high overpotentials of more than 1 V. On the other hand, Pd can convert CO2 to formate with almost no overpotential, but is readily poisoned by CO and deactivates when trying to reach industrially relevant currents. In this work we show the effect of the interaction of In and Pd in bimetallic nanoparticles, reaching the conclusion that this interaction causes a loss of selectivity towards formate and at the same time suppresses CO poisoning of Pd sites. The results of the catalyst characterization suggest the formation of intermetallic PdIn compounds that in turn cause the aforementioned behavior. Based on these results, it seems that geometric and electronic effects in Pd based intermetallic compounds can alleviate CO poisoning on Pd sites. In the case of PdIn intermetallics this leads to the loss of CO2 reduction activity, but this strategy may be useful for other electrochemical reactions that suffer from the same problem of deactivation. It remains to be seen if intermetallic compounds of Pd with other elements can yield viable CO2 reduction catalysts. This journal is
AB - CO2 electroreduction powered by renewable energy is an attractive strategy to recycle air-based carbon. One of the current challenges for the scale up of the technology is that the catalysts that show high faradaic yield at high current density (post-transitional metals such as In, Sn, Bi, Pb) suffer from very high overpotentials of more than 1 V. On the other hand, Pd can convert CO2 to formate with almost no overpotential, but is readily poisoned by CO and deactivates when trying to reach industrially relevant currents. In this work we show the effect of the interaction of In and Pd in bimetallic nanoparticles, reaching the conclusion that this interaction causes a loss of selectivity towards formate and at the same time suppresses CO poisoning of Pd sites. The results of the catalyst characterization suggest the formation of intermetallic PdIn compounds that in turn cause the aforementioned behavior. Based on these results, it seems that geometric and electronic effects in Pd based intermetallic compounds can alleviate CO poisoning on Pd sites. In the case of PdIn intermetallics this leads to the loss of CO2 reduction activity, but this strategy may be useful for other electrochemical reactions that suffer from the same problem of deactivation. It remains to be seen if intermetallic compounds of Pd with other elements can yield viable CO2 reduction catalysts. This journal is
UR - http://www.scopus.com/inward/record.url?scp=85087684030&partnerID=8YFLogxK
U2 - 10.1039/d0cy00831a
DO - 10.1039/d0cy00831a
M3 - Article
AN - SCOPUS:85087684030
SN - 2044-4753
VL - 10
SP - 4264
EP - 4270
JO - Catalysis Science and Technology
JF - Catalysis Science and Technology
IS - 13
ER -