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

    • 1 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.

    Original languageEnglish (US)
    Pages (from-to)1534-1542
    Number of pages9
    JournalChemSusChem
    Volume10
    Issue number7
    DOIs
    StatePublished - Apr 10 2017

    Profile

    Catalysts
    catalyst
    Afferent Loop Syndrome
    Platinum
    Oxygen
    Metals
    platinum
    oxygen
    metal
    Enzymes
    enzyme
    Surface morphology
    Nitrogen
    nitrogen
    Verbal Reinforcement
    Bile Pigments
    Electrocatalysts
    Hybrid materials
    Surface chemistry
    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, Vol. 10, No. 7, 10.04.2017, p. 1534-1542.

    Research output: Contribution to journalArticle

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