Two‐Dimensional Polymers as Modular Metal‐Free Solid‐State Catalysts for Efficient Sono‐Piezo‐Photocatalytic Hydrogen Peroxide Production
Angewandte Chemie International Edition, vol. 65, pp. e22687
Abstract
Piezo-photocatalysis synergistically integrates the features of piezocatalysis and photocatalysis, offering promising applications in environmental remediation, energy conversion, and biomedical therapy. Herein, we introduce modularly designed solid molecular catalysts (SMCs) comprised of metal-free, polyaromatic, two-dimensional polymers which offer an unprecedented level of control over piezopolarization-and consequently, piezo-photocatalysis-through the rational design of structural motifs (diphenylpyridine or terpyridine) and backbone functionalities (methyl group, aliphatic amine antenna, or aromatic pyrrole ring). We demonstrate that piezopolarization, induced by ultrasound across a wide frequency range (35 kHz to 2.6 MHz), enables highly efficient sono-piezo-photocatalytic hydrogen peroxide production. The SMC AP5 featuring the terpyridine motif and pyrrole functionalization is the most active metal-free piezo-photocatalyst for hydrogen peroxide production under ambient conditions. Furthermore, the instantaneous on/off-switchability of the sono-piezo-photocatalysts is shown, underscoring their potential for applications requiring spatiotemporal control over catalytic activity.
Authors 7
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Affiliation as printed
Institute for Technical and Macromolecular Chemistry RWTH Aachen University Aachen Germany
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Forschungszentrum Jülich · RWTH Aachen University
Affiliation as printed
Institute for Technical and Macromolecular Chemistry RWTH Aachen University Aachen Germany
Institute for a Sustainable Hydrogen Economy Forschungszentrum Jülich GmbH Jülich Germany
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Marcus Lantzius‐Beninga Aachen DWI – Leibniz Institute for Interactive Materials Aachen Germany Institute for Technical and Macromolecular Chemistry
DWI – Leibniz Institute for Interactive Materials · RWTH Aachen University
Affiliation as printed
DWI – Leibniz‐Institute for Interactive Materials Aachen Germany
Institute for Technical and Macromolecular Chemistry RWTH Aachen University Aachen Germany
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DWI – Leibniz Institute for Interactive Materials
Affiliation as printed
DWI – Leibniz‐Institute for Interactive Materials Aachen Germany
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DWI – Leibniz Institute for Interactive Materials
Affiliation as printed
DWI – Leibniz‐Institute for Interactive Materials Aachen Germany
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Affiliation as printed
Institute for Technical and Macromolecular Chemistry RWTH Aachen University Aachen Germany
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Forschungszentrum Jülich · Max Planck Institute for Chemical Energy Conversion · RWTH Aachen University
Affiliation as printed
Institute for Technical and Macromolecular Chemistry RWTH Aachen University Aachen Germany
Institute for a Sustainable Hydrogen Economy Forschungszentrum Jülich GmbH Jülich Germany
Max‐Planck‐Institute for Chemical Energy Conversion Mülheim an der Ruhr Germany
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