Emergent Nanomaterials (Critical Mass Proposal)

Lead Research Organisation: Imperial College London
Department Name: Materials

Abstract

Abstracts are not currently available in GtR for all funded research. This is normally because the abstract was not required at the time of proposal submission, but may be because it included sensitive information such as personal details.

Publications

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Calì E (2020) Exsolution of Catalytically Active Iridium Nanoparticles from Strontium Titanate. in ACS applied materials & interfaces

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Cavallaro A (2021) Analysis of H 2 O-induced surface degradation in SrCoO 3 -derivatives and its impact on redox kinetics in Journal of Materials Chemistry A

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Kousi K (2020) Low temperature methane conversion with perovskite-supported exo / endo -particles in Journal of Materials Chemistry A

 
Description We have continued to probe the chemistry and physics of doped perovskite oxide materials, focussing on iridium doped strontium titanate (Ir-STO). We have found that Ir-STO is an effective catalyst, and are studying its functionality with collaborators in the University of Newcastle. Using high resolution transmission electron microscopy we have been able to image exsolution of the nanoparticles in-situ, which in combination with theoretical models and deep learning approaches will help understand the complicated surface structure and energetics of the catalyst formation. We have just had a paper accepted on this work by Nature Communications - to be published April 2023.
Exploitation Route Iridium is a well studied metal for catalysis, but suffers from deactivation. The catalysts we are producing are at very low doping levels and are better suited to robust chemical processes - but this is still under study.
Sectors Chemicals,Energy