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High Throughput Synthesis and Screening of Oxygen Reduction Catalysts in the MTiO₃ (M = Ca, Sr, Ba) Perovskite Phase Diagram

Groves, AR; Ashton, TE; Darr, JA; (2020) High Throughput Synthesis and Screening of Oxygen Reduction Catalysts in the MTiO₃ (M = Ca, Sr, Ba) Perovskite Phase Diagram. ACS Combinatorial Science , 22 (12) pp. 750-756. 10.1021/acscombsci.0c00094. Green open access

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Abstract

A library of 66 perovskite BaxSryCazTiO3 (x + y + z = 1) samples (ca. three grams per sample) was made in ca. 14 h using a high-throughput continuous hydrothermal flow synthesis system. The as-synthesized samples were collected from the outlet of the process and then cleaned and freeze-dried before being evaluated individually as oxygen reduction catalysts using a rotating disk electrode testing technique. To establish any correlations between physical and electrochemical characterization data, the as-synthesized samples were investigated using analytical methods including BET surface area, powder X-ray diffraction (PXRD) and in selected cases, transmission electron microscopy (TEM). The aforementioned approach was validated as being able to quickly identify oxygen reduction catalysts from new libraries of electrocatalysts.

Type: Article
Title: High Throughput Synthesis and Screening of Oxygen Reduction Catalysts in the MTiO₃ (M = Ca, Sr, Ba) Perovskite Phase Diagram
Open access status: An open access version is available from UCL Discovery
DOI: 10.1021/acscombsci.0c00094
Publisher version: https://doi.org/10.1021/acscombsci.0c00094
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: combinatorial synthesis, continuous hydrothermal flow synthesis, green chemistry, X-ray diffraction, electrocatalysis, oxygen reduction reaction
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10119073
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