Butylphenyl-functionalized Pt nanoparticles as CO-resistant electrocatalysts for formic acid oxidation.
Summary of "Butylphenyl-functionalized Pt nanoparticles as CO-resistant electrocatalysts for formic acid oxidation."
Butylphenyl-functionalized Pt nanoparticles (Pt-BP) with an average core diameter of 2.93 ± 0.49 nm were synthesized by the co-reduction of butylphenyl diazonium salt and H(2)PtCl(4). Cyclic voltammetric studies of the Pt-BP nanoparticles showed a much less pronounced hysteresis between the oxidation currents of formic acid in the forward and reverse scans, as compared to that on naked Pt surfaces. Electrochemical in situ FTIR studies confirmed that no adsorbed CO, a poisoning intermediate, was generated on the Pt-BP nanoparticle surface. These results suggest that functionalization of the Pt nanoparticles by butylphenyl fragments effectively blocked the CO poisoning pathway, most probably through third-body effects, and hence led to an apparent improvement of the electrocatalytic activity in formic acid oxidation.
Affiliation
Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, California 95064, USA. shaowei@ucsc.edu.
Journal Details
This article was published in the following journal.
Name: Physical chemistry chemical physics : PCCP
ISSN: 1463-9084
Pages: 1412-7
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22159142
- DOI: http://dx.doi.org/10.1039/c1cp23183a
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