AI Article Synopsis
- Zinc oxide nanostructures have been enhanced with plasmonic metal nanoparticles to improve their photocatalytic activity in visible light applications.
- An insulating SiO layer was added between the zinc oxide and silver nanoparticles, allowing precise control of its thickness between 5-40 nm.
- A thickness of around 10 nm was found to optimize the photocatalytic effects, boosting water oxidation under UV and visible light by balancing energy transfer processes.
Article Abstract
Many strategies have been adopted to improve the photoinduced features of zinc oxide nanostructures for different application fields. In this work, zinc oxide has been synthesised and decorated by plasmonic metal nanoparticles to enhance its photocatalytic activity in the visible range. Furthermore, an insulating layer of SiO has been grown between the surface of zinc oxide nanoflakes and silver nanoparticles. A synthetic procedure that allows the accurate modulation of the insulating layer thickness in the range 5-40 nm has been developed. Evidences highlight the crucial role of the SiO layer in dramatically increasing photocatalytic water oxidation promoted by the nanostructure under both UV and visible illumination. An ideal thickness value of about 10 nm has been demonstrated to guarantee the plasmon-induced resonance energy-transfer process and to quench the Förster resonance energy-transfer mechanism; thus, optimising the local surface plasmon resonance effect and water oxidation properties.
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| http://dx.doi.org/10.1002/chem.201902886 | DOI Listing |
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