Visible Light-Driven Gas-Phase Artificial Photosynthesis Reactions over Ruthenium Metal Nanoparticles Modified with Anatase Ti[O.sub.2]

Ruthenium metal nanoparticles with a narrow size distribution have been synthesised via a solvothermal method. The solids were characterised using a range of analytical techniques (XRD, TEM, TPD, and XPS) and tested in the C[O.sub.2]+[H.sub.2]O reaction under simulated solar radiation, showing photo...

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Bibliographic Details
Published inInternational Journal of Photoenergy Vol. 2019
Main Authors Morais, Eduardo, O'Modhrain, Colin, Ravindranathan Thampi, K, Sullivan, James A
Format Journal Article
LanguageEnglish
Published John Wiley & Sons, Inc 30.06.2019
Subjects
Catalysis
Chemical properties
Nanoparticles
Photosynthesis
Phytochemistry
Radiation
Ruthenium
Ireland
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Summary:Ruthenium metal nanoparticles with a narrow size distribution have been synthesised via a solvothermal method. The solids were characterised using a range of analytical techniques (XRD, TEM, TPD, and XPS) and tested in the C[O.sub.2]+[H.sub.2]O reaction under simulated solar radiation, showing photocatalytic activity towards the production of C[H.sub.4] and CO. The photocatalysis was promoted through a plasmonic excitation of the Ru. The addition of Ti to the preparation resulted in the formation of anatase Ti[O.sub.2]. Notwithstanding the fact that the energy of the light used during the photocatalysis was insufficient to excite Ti[O.sub.2], its presence affects the catalysts' optical and chemical properties and the product (C[H.sub.4]/CO) ratios, favouring the evolution of CO over that of C[H.sub.4] (suggesting exciton transfer to Ti[O.sub.2] from plasmonically excited Ru).
ISSN:1110-662X
DOI:10.1155/2019/3651603