Polydopamine nanofilms as visible light-harvesting interfaces for palladium nanocrystal catalyzed coupling reactions?
Catalysis Science & Technology Pub Date: 2015-10-15 DOI: 10.1039/C5CY01330E
Abstract
Light-harvesting material is of great importance for the efficient use of solar energy to drive catalytic reactions in chemistry. We herein report mussel-inspired polydopamine nanofilms as light-harvesting interfaces for heterogeneous palladium catalyzed coupling reactions under irradiation from visible light. Our strategy includes the in situ growth of palladium nanocrystals on a polydopamine nanofilm to prepare photocatalysts and photocatalytic Suzuki coupling reactions involving a broad range of aryl bromides/iodides and arylboronic acid substrates. The polydopamine based photocatalysts could be supported on various carriers regardless of size or morphology, thus they are easily recycled and reused. A plausible photocatalytic mechanism has been proposed including light-harvesting, photoelectron-hole separation and transfer processes. This strategy also has potential for other noble metals such as platinum, indium and gold photocatalytic organic reactions such as couplings, reductions and oxidations.
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Journal Name：Catalysis Science & Technology
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CAS no.: 89640-58-4
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