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Au/TiO2 coatings for photocatalytic reduction of 4-nitrophenol to 4-aminophenol with green light
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Gregory, Joseph W., Gong, Yuyan, Han, Yisong, Huband, Steven, Walton, Richard I., Hessel, Volker and Rebrov, Evgeny V. (2023) Au/TiO2 coatings for photocatalytic reduction of 4-nitrophenol to 4-aminophenol with green light. Catalysis Today, 418 . 114145. doi:10.1016/j.cattod.2023.114145 ISSN 0920-5861.
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Official URL: http://doi.org/10.1016/j.cattod.2023.114145
Abstract
Au/TiO2 catalytic coatings have been developed onto the inner surface of a quartz tube for photocatalytic applications. Gold nanoparticles with diameter 3–5 nm were synthesised using the citrate method, with sodium borohydride as a reducing agent. The nanoparticles were characterised by UV–vis spectroscopy, small angle X-ray scattering (SAXS), dynamic light scattering (DLS), and transmission electron microscopy (TEM). The photocatalytic activity of gold nanoparticles and Au/TiO2 catalytic coatings was studied in the reduction of 4-nitrophenol (4-NP) with green LEDs. The reaction rate follows Langmuir-Hinshelwood kinetics and increases with the light intensity until a plateau at 3 mW cm−2. The photocatalytic activity of gold nanoparticles was fully preserved in the Au/TiO2 coatings.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QC Physics Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TN Mining engineering. Metallurgy |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Engineering > Engineering Faculty of Science, Engineering and Medicine > Science > Physics |
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Library of Congress Subject Headings (LCSH): | Metal nanoparticles, Metal nanoparticles -- Synthesis, Nanoparticles -- Synthesis, Metal coating, Photocatalysis, Thin films, Gold, Titanium dioxide | ||||||||
Journal or Publication Title: | Catalysis Today | ||||||||
Publisher: | Elsevier BV | ||||||||
ISSN: | 0920-5861 | ||||||||
Official Date: | 1 June 2023 | ||||||||
Dates: |
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Volume: | 418 | ||||||||
Article Number: | 114145 | ||||||||
DOI: | 10.1016/j.cattod.2023.114145 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 9 June 2023 | ||||||||
Date of first compliant Open Access: | 13 June 2023 | ||||||||
RIOXX Funder/Project Grant: |
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