Integration of Platinum Group Metal-Free Catalysts and Bilirubin Oxidase into a Hybrid Material for Oxygen Reduction: Interplay of Chemistry and Morphology

Santiago Rojas-Carbonell, Sofia Babanova, Alexey Serov, Kateryna Artyushkova, Michael J. Workman, Carlo Santoro, Alex Mirabal, Scott Calabrese Barton, Plamen Atanassov

Research output: Contribution to journalArticle

  • 4 Citations

Abstract

Catalytic activity toward the oxygen reduction reaction (ORR) of platinum group metal-free (PGM-free) electrocatalysts integrated with an enzyme (bilirubin oxidase, BOx) in neutral media was studied. The effects of chemical and morphological characteristics of PGM-free materials on the enzyme enhancement of the overall ORR kinetics was investigated. The surface chemistry of the PGM-free catalyst was studied using X-ray Photoelectron Spectroscopy. Catalyst surface morphology was characterized using two independent methods: length-scale specific image analysis and nitrogen adsorption. Good agreement of macroscopic and microscopic morphological properties was found. Enhancement of ORR activity by the enzyme is influenced by chemistry and surface morphology of the catalyst itself. Catalysts with a higher nitrogen content, specifically pyridinic moieties, showed the greatest enhancement. Furthermore, catalysts with a higher fraction of surface roughness in the range of 3–5 nm exhibited greater performance enhancement than catalysts lacking features of this size.

LanguageEnglish (US)
Pages1534-1542
Number of pages9
JournalChemSusChem
Volume10
Issue number7
DOIs
StatePublished - Apr 10 2017

Profile

bilirubin oxidase
Hybrid materials
Platinum
platinum
Metals
catalyst
Oxygen
oxygen
Catalysts
metal
Enzymes
enzyme
Surface morphology
Nitrogen
Electrocatalysts
nitrogen
reaction kinetics
Surface chemistry
surface roughness
Reaction kinetics

Keywords

  • bilirubin oxidase
  • hybrid catalyst
  • oxygen reduction reaction
  • pgm-free catalyst
  • surface characterization

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

Cite this

Rojas-Carbonell, S., Babanova, S., Serov, A., Artyushkova, K., Workman, M. J., Santoro, C., ... Atanassov, P. (2017). Integration of Platinum Group Metal-Free Catalysts and Bilirubin Oxidase into a Hybrid Material for Oxygen Reduction: Interplay of Chemistry and Morphology. ChemSusChem, 10(7), 1534-1542. DOI: 10.1002/cssc.201601822

Integration of Platinum Group Metal-Free Catalysts and Bilirubin Oxidase into a Hybrid Material for Oxygen Reduction : Interplay of Chemistry and Morphology. / Rojas-Carbonell, Santiago; Babanova, Sofia; Serov, Alexey; Artyushkova, Kateryna; Workman, Michael J.; Santoro, Carlo; Mirabal, Alex; Calabrese Barton, Scott; Atanassov, Plamen.

In: ChemSusChem, Vol. 10, No. 7, 10.04.2017, p. 1534-1542.

Research output: Contribution to journalArticle

Rojas-Carbonell, S, Babanova, S, Serov, A, Artyushkova, K, Workman, MJ, Santoro, C, Mirabal, A, Calabrese Barton, S & Atanassov, P 2017, 'Integration of Platinum Group Metal-Free Catalysts and Bilirubin Oxidase into a Hybrid Material for Oxygen Reduction: Interplay of Chemistry and Morphology' ChemSusChem, vol 10, no. 7, pp. 1534-1542. DOI: 10.1002/cssc.201601822
Rojas-Carbonell S, Babanova S, Serov A, Artyushkova K, Workman MJ, Santoro C et al. Integration of Platinum Group Metal-Free Catalysts and Bilirubin Oxidase into a Hybrid Material for Oxygen Reduction: Interplay of Chemistry and Morphology. ChemSusChem. 2017 Apr 10;10(7):1534-1542. Available from, DOI: 10.1002/cssc.201601822
Rojas-Carbonell, Santiago ; Babanova, Sofia ; Serov, Alexey ; Artyushkova, Kateryna ; Workman, Michael J. ; Santoro, Carlo ; Mirabal, Alex ; Calabrese Barton, Scott ; Atanassov, Plamen. / Integration of Platinum Group Metal-Free Catalysts and Bilirubin Oxidase into a Hybrid Material for Oxygen Reduction : Interplay of Chemistry and Morphology. In: ChemSusChem. 2017 ; Vol. 10, No. 7. pp. 1534-1542
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