Literature DB >> 20715278

In situ X-ray absorption analysis of ∼1.8 nm dendrimer-encapsulated Pt nanoparticles during electrochemical CO oxidation.

Michael G Weir1, V Sue Myers, Anatoly I Frenkel, Richard M Crooks.   

Abstract

We report an in situ X-ray absorption-fine structure (XAFS) spectroscopic analysis of ∼1.8 nm Pt dendrimer-encapsulated nanoparticles (DENs) during electrocatalytic oxidation of CO. The results indicate that Pt nanoparticles encapsulated within poly(amidoamine) (PAMAM) dendrimers and immobilized on a carbon electrode retain their electrocatalytic activity and are structurally stable for extended periods during CO oxidation. This is a significant finding, because nanoparticles in this size range are good experimental models for comparison to first-principles calculations if they remain stable.

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Year:  2010        PMID： 20715278     DOI： 10.1002/cphc.201000452

Source DB:  PubMed          Journal:  Chemphyschem        ISSN： 1439-4235            Impact factor:   3.102


  3 in total

Review 1.  In Situ/Operando Electrocatalyst Characterization by X-ray Absorption Spectroscopy.

Authors:  Janis Timoshenko; Beatriz Roldan Cuenya
Journal:  Chem Rev       Date:  2020-09-28       Impact factor: 60.622

2.  Multistep galvanic exchange synthesis yielding fully reduced Pt dendrimer-encapsulated nanoparticles.

Authors:  Rachel M Anderson; David F Yancey; James A Loussaert; Richard M Crooks
Journal:  Langmuir       Date:  2014-12-02       Impact factor: 3.882

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

Authors:  Aigerim Galyamova; Richard M Crooks
Journal:  Nanomaterials (Basel)       Date:  2022-03-03       Impact factor: 5.076
  3 in total

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