Effect of Intermediate Semiconducting TiO_x Thin Films on Nanoparticle-Mediated Electron Transfer: Electrooxidation of CO.

ABSTRACT: The concept of nanoparticle-mediated electron transfer (eT) across insulating thin films was elucidated theoretically by Allongue and Chazalviel in 2011. In their model, metal nanoparticles (NPs) are immobilized atop passivating, self-assembled monolayers (SAMs). They found that under certain conditions, related to the thickness of the SAM and the size of the NPs, efficient faradaic oxidation and reduction reactions could proceed at the NP surface. In the absence of NPs, however, eT was suppressed by the insulating SAM thin films. Allongue and Chazalviel concluded that, within certain bounds, eT is mediated by fast tunneling between the conductive electrode and the metal NPs, while the kinetics of the redox reaction are controlled by the NPs. This understanding has been confirmed using a v

SUBMITTER: Galyamova A 

PROVIDER: S-EPMC8912720 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature