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Hematite-based nanocomposites for light-activated applications: Synergistic role of TiO2 and Au introduction

Giorgio Carraro, Chiara Maccato, Alberto Gasparotto, Michael Warwick Orcid Logo, Cinzia Sada, Stuart Turner, Antonio Bazzo, Teresa Andreu, Olena Pliekhova, Dorota Korte, Urška Lavrenčič Štangar, Gustaaf Van Tendeloo, Juan Ramón Morante, Davide Barreca

Solar Energy Materials and Solar Cells, Volume: 159, Pages: 456 - 466

Swansea University Author: Michael Warwick Orcid Logo

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Abstract

Photo-activated processes have been widely recognized as cost-effective and environmentally friendly routes for both renewable energy generation and purification/cleaning technologies. We report herein on a plasma-assisted approach for the synthesis of Fe2O3-TiO2 nanosystems functionalized with Au n...

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Published in: Solar Energy Materials and Solar Cells
ISSN: 0927-0248
Published: North-Holland 2017
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa32787
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Abstract: Photo-activated processes have been widely recognized as cost-effective and environmentally friendly routes for both renewable energy generation and purification/cleaning technologies. We report herein on a plasma-assisted approach for the synthesis of Fe2O3-TiO2 nanosystems functionalized with Au nanoparticles. Fe2O3 nanostructures were grown by plasma enhanced-chemical vapor deposition, followed by the sequential sputtering of titanium and gold under controlled conditions, and final annealing in air. The target nanosystems were subjected to a thorough multi-technique characterization, in order to elucidate the interrelations between their chemico-physical properties and the processing conditions. Finally, the functional performances were preliminarily investigated in both sunlight-assisted H2O splitting and photocatalytic activity tests in view of self-cleaning applications. The obtained results highlight the possibility of tailoring the system behaviour and candidate the present Fe2O3-TiO2-Au nanosystems as possible multi-functional low-cost platforms for light-activated processes.
Keywords: Fe2O3-TiO2-Au; Plasma enhanced-chemical vapor deposition; Sputtering; Photocatalysis
College: Faculty of Science and Engineering
Start Page: 456
End Page: 466