Volume 210, 2018

Evaluation of the intrinsic catalytic activity of nanoparticles without prior knowledge of the mass loading

Abstract

The quantitative characterisation of electrocatalytic properties of nanoparticle catalyst materials is so far only performed for layers typically comprising additionally conducting additives and binders. We propose a method enabling the evaluation of intrinsic catalytic activity of nanoparticles based on the diffusion-limited steady-state current. In a step-after-step process, the influence of coverage on kinetic and diffusion limited current is evaluated to highlight the challenges of sub-monolayer electroanalysis. Conclusions are used to point out strategies and their limitations for qualitative and quantitative comparison of intrinsic catalytic properties. Particularly, the impact of coverage, electrode geometry, altered diffusion profile for nanoparticles and the catalyst activity and selectivity are discussed. Fundamental information about electrochemical sub-monolayer nanoparticle analysis is provided.

Graphical abstract: Evaluation of the intrinsic catalytic activity of nanoparticles without prior knowledge of the mass loading

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Article information

Article type
Paper
Submitted
14 ก.พ. 2561
Accepted
20 ก.พ. 2561
First published
20 ก.พ. 2561

Faraday Discuss., 2018,210, 317-332

Evaluation of the intrinsic catalytic activity of nanoparticles without prior knowledge of the mass loading

T. Löffler, P. Wilde, D. Öhl, Y. Chen, K. Tschulik and W. Schuhmann, Faraday Discuss., 2018, 210, 317 DOI: 10.1039/C8FD00029H

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