Microwave-Assisted Synthesis of Nitrogen and Sulphur Doped Graphene Decorated with Antimony Oxide: An Effective Catalyst for Oxygen Reduction Reaction

Overview

Journal Materials (Basel)

Publisher MDPI

Date 2022 Jan 11

PMID 35009156

Authors

Nadia Garino

Adriano Sacco

Angelica Chiodoni

Candido F Pirri

Micaela Castellino

Affiliations

Soon will be listed here.

Abstract

In this study, we report on the facile synthesis of a novel electrocatalysts for the oxygen reduction reaction (ORR), based on reduced graphene oxide (RGO), functionalized with metallic and non-metallic elements. In particular, thanks to a fast one-pot microwave-assisted procedure, we induced, in the RGO graphene lattice, a combined doping with nitrogen and sulphur, and the simultaneous decoration with antimony oxide nanocrystals. The multi-doped-decorated material shows enhanced catalytic performance towards ORR, with respect to common nitrogen- or sulphur-doped carbon-based materials. The presence of co-doping is confirmed by transmission electron microscopy and X-ray photoelectron spectroscopy analysis. The detailed electrochemical characterization shows the simultaneous effects of dopant atoms on the catalytic behavior. In particular, the importance of nitrogen and sulphur atoms in driving the oxygen absorption, together with the role of antimony in enhancing the electrochemical performance toward the ORR, are discussed.

Citing Articles

Green Methods for the Fabrication of Graphene Oxide Membranes: From Graphite to Membranes.

Pedico A, Baudino L, Aixala-Perello A, Lamberti A Membranes (Basel). 2023; 13(4).

PMID: 37103856 PMC: 10145855. DOI: 10.3390/membranes13040429.

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