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Ce Doping Boosts the Thermo‐ and Photocatalytic Oxidation of CO at Low Temperature in TiZrO4 Solid Solutions by Tang, Panjuan (author);Livraghi, Stefano (author);Giamello, Elio (author);Garroni, Sebastiano (author);Malfatti, Luca (author);Agnoli, Stefano (author) is a Materials Science article available to read on EtoBox.

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## Abstract Palladium nanoparticles supported on zirconium titanate with cerium doping up to 10% molar (Ce‐ZT) are prepared by a facile impregnation method and characterized by several techniques. Due to electronic effects, the amount of Ce cations in a reduced oxidation state, i.e., Ce(III), is surprisingly high, more than 50% of the total cerium amount. The Pd decorated Ce‐ZT nanoparticles exhibit excellent catalytic activity in the low temperature oxidation of CO. The amount of Pd and Ce concentration results to be the key parameters controlling the catalytic performance. The best activity is observed in the sample with the highest Ce doping (10% molar) and a nominal Pd loading of 2% w/w, which exhibits an outstanding turnover frequency of 0.1 s^−1^ at 45 °C. Moreover, the CO conversion remains unchanged at 100% for 24 h at 50 °C, or for several successive light‐off experiments up to 120 °C, demonstrating excellent long‐term stability. Light irradiation is shown to further improve the catalytic performance allowing to reach the same catalytic activity of dark conditions at a temperature that is 20–40 °C lower. Electron paramagnetic resonance spectroscopy experiments indicate tha

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Author
Tang, Panjuan (author);Livraghi, Stefano (author);Giamello, Elio (author);Garroni, Sebastiano (author);Malfatti, Luca (author);Agnoli, Stefano (author)
Publisher
Wiley
Published
2021
Language
EN
Field
Materials Science (Physical Sciences)

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