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Royal Society of Chemistry, RSC Advances, 72(4), p. 38164

DOI: 10.1039/c4ra08107b

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The influence of nanoparticles on enzymatic bioelectrocatalysis

Journal article published in 2014 by Dmitry Pankratov, Richard Sundberg, Dmitry B. Suyatin, Javier Sotres, Alejandro Barrantes, Tautgirdas Ruzgas, Ivan Maximov ORCID, Lars Montelius, Sergey Shleev ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

In nearly all papers concerning enzyme–nanoparticle based bioelectronic devices, it is stated that the presence of nanoparticles on electrode surfaces per se enhances bioelectrocatalysis, although the reasons for that enhancement are often unclear. Here, we report detailed experimental evidence that neither an overpotential of bioelectrocatalysis, nor direct electron transfer and bioelectrocatalytic reaction rates for an adsorbed enzyme depend on the size of nanoparticles within the range of 20–80 nm, i.e. for nanoparticles that are considerably larger than the enzyme molecules.