Issue 43, 2017

All at once: how electrochemistry can be used to design and access multiple compositions in a single sample

Abstract

A library of binary PtRh thin-film electrocatalysts was obtained by potentiostatic co-electrodeposition of Pt4+ and Rh3+ on a gold wire in a capillary cell, the capillary separating on the one hand the Pt4+ compartment and on the other hand the Rh3+ compartment. More specifically, this capillary cell enables to hinder the mobility of the ions from the one compartment to the other, thereby creating a continuous gradient of concentrations of Pt4+ and Rh3+ in the solution along the gold wire; as a result, the surface of the gold wire substrate witnesses crossed gradients of Pt4+ and Rh3+ during the electrodeposition, and countless PtRh compositions can be generated on the surface of a single sample. The feasibility of the protocol was confirmed by electron probe microanalysis and sections of the film (with lengths of 1 mm) were subsequently accessed by cyclic voltammetry. The results demonstrate the potential of this approach to perform compositional studies in a single piece of substrate and open new perspectives of studies in catalysis and electrocatalysis with a relatively low-cost and time-saving approach.

Graphical abstract: All at once: how electrochemistry can be used to design and access multiple compositions in a single sample

Article information

Article type
Paper
Submitted
09 Jun 2017
Accepted
09 Oct 2017
First published
09 Oct 2017

J. Mater. Chem. A, 2017,5, 22641-22647

All at once: how electrochemistry can be used to design and access multiple compositions in a single sample

V. A. Ruffo, A. Crisci, M. Chatenet and G. A. Camara, J. Mater. Chem. A, 2017, 5, 22641 DOI: 10.1039/C7TA05036D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements