Localized Oxidative Catalytic Reactions Triggered by Cavitation Bubbles Confinement on Copper Oxide Microstructured Particles

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Mahendran, Valarmathi
Trinh, Quang Thang
Xie, Zhangyue
Jonnalagadda, Umesh
Gould, Tim
Nguyen, Nam-Trung
Kwan, James
Choksi, Tej S
Liu, Wen
Valange, Sabine
Jerome, Francois
Amaniampong, Prince Nana
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2024
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Abstract

Efficient energy transfer management in catalytic processes is crucial for overcoming activation energy barriers while minimizing costs and CO2 emissions. We exploit here a concept of CuO particle design with multiple gas-stabilizing sites, engineered to function as cavitation nuclei and catalysts. This concept facilitates the selective and efficient acoustic energy transfer directly to the catalyst surface, avoiding the undesired dissipation of acoustic energy into the bulk solution while demonstrating superior cavitation properties at lower acoustic pressure amplitudes. Utilizing a chemical thermometric approach, we demonstrate that the local temperature on the surface of our CuO particles during cavitation bubble implosions can create an effective equivalent temperature of about 360 °C. This temperature effect facilitates the efficient catalysis of oxidative reactions using an organic pollutant probe molecule. Density functional theory (DFT) calculations were used to assess the decomposition of H2O2 and of pollutant probe molecule on CuO (111). Our work represents a significant advance in sonocatalytic systems, promising efficient energy use in catalytic reactions.

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Angewandte Chemie International Edition

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FL230100023

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© 2024 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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This publication has been entered in Griffith Research Online as an advance online version.

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Chemical sciences

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Mahendran, V; Trinh, QT; Xie, Z; Jonnalagadda, U; Gould, T; Nguyen, N-T; Kwan, J; Choksi, TS; Liu, W; Valange, S; Jerome, F; Amaniampong, PN, Localized Oxidative Catalytic Reactions Triggered by Cavitation Bubbles Confinement on Copper Oxide Microstructured Particles, Angewandte Chemie International Edition, 2024, pp. e202416543

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