Cyanide-treated Fe(III) porphyrins as an electrocatalytic material for selective H 2S oxidation

Jason A. Bennett, Marc A. Neiswonger, James E. Pander, Stephanie E. McKinney, Christopher D. Wheeler

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Electrodeposited Fe(III) meso-Tetra(4-carboxyphenyl) porphyrin with cyanide ligands coordinated to the central iron ion is being investigated as a possible material capable of selectively oxidizing H 2S in the presence of CO and NO in physiologically relevant solutions. Preliminary results suggest this to be a very attractive material as it oxidizes H 2S at low potentials while exhibiting minimal activity towards both CO and NO. However certain results suggest that the Fe may not be completely coordinated with cyanide ligands. This may explain the limitations of the material at elevated H 2S concentrations and imperfect selectivity over the interfering gases. Additionally, a cathodic-post run treatment is suggested in order to maintain the electrochemical activity of the porphyrin-modified electrode surface by stripping any S 0 that deposits on the electrode surface during the H 2S oxidation.

Original languageEnglish (US)
Title of host publicationFullerenes, Nanotubes, and Carbon Nanostructures - 219th ECS Meeting
Pages137-145
Number of pages9
Edition25
DOIs
StatePublished - Dec 1 2011
Event219th ECS Meeting - Montreal, QC, Canada
Duration: May 1 2011May 6 2011

Publication series

NameECS Transactions
Number25
Volume35
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other219th ECS Meeting
CountryCanada
CityMontreal, QC
Period5/1/115/6/11

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Bennett, J. A., Neiswonger, M. A., Pander, J. E., McKinney, S. E., & Wheeler, C. D. (2011). Cyanide-treated Fe(III) porphyrins as an electrocatalytic material for selective H 2S oxidation. In Fullerenes, Nanotubes, and Carbon Nanostructures - 219th ECS Meeting (25 ed., pp. 137-145). (ECS Transactions; Vol. 35, No. 25). https://doi.org/10.1149/1.3655519