Influence of morphology in the catalytic activity of bioconjugated platinum nanostructures

Javier Guerra, Justin L. Burt, Domingo A. Ferrer, Sergio Mejía, Miguel José-Yacamán

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Platinum nanoparticles stabilized by a protein, bovine serum albumin, have been synthesized successfully with two different morphologies such as cuboctahedra and nanorods. They have been characterized by the use of different techniques such as XPS, PCS, TEM, and STEM-HAADF. These nanoparticles have been applied as catalysts for the hydrogenation of allyl alcohol in an aqueous solution. A key finding of this article is the superior catalytic activity of the nanorods compared to the cuboctahedral particles. This difference in the catalytic activity was justified because of the variation in the amount of protein to stabilize the nanorods. A model for the nanorods and equations that describe the proportion of atoms in the different sites of the particle (face, vertex, edge, or interior) is used to calculate the percentage of atoms that are located on the nanorod surface. The stability of these particles as catalysts was also studied. The results showed that Pt nanorods and Pt cuboctahedra particles were degraded after 24 h of reaction.

Original languageEnglish (US)
Pages (from-to)1723-1735
Number of pages13
JournalJournal of Nanoparticle Research
Volume13
Issue number4
DOIs
StatePublished - Apr 2011
Externally publishedYes

Keywords

  • BSA
  • Catalysis
  • Nanoparticle
  • Platinum
  • Protein stabilizing agent
  • TEM

ASJC Scopus subject areas

  • Bioengineering
  • Atomic and Molecular Physics, and Optics
  • Chemistry(all)
  • Modeling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

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