Multilayer TiO2 Inverse Opal with Gold Nanoparticles for Enhanced Photocatalytic Activity
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2020Author(s)
Zulfiqar, Abid
Temerov, Filipp
Saarinen, Jarkko J
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10.1021/acsomega.0c00833Metadata
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Zulfiqar, Abid. Temerov, Filipp. Saarinen, Jarkko J. (2020). Multilayer TiO2 Inverse Opal with Gold Nanoparticles for Enhanced Photocatalytic Activity. ACS omega, 5 (20) , 11595-11604. 10.1021/acsomega.0c00833.Rights
© 2020 American Chemical Society
Abstract
Three-dimensional highly ordered multilayer titanium dioxide (TiO2) inverse opal (TIO) structures with two pore sizes were fabricated over a large surface using a self-convective method. The fabricated TIO multilayers were functionalized with gold nanoparticles (AuNPs) by immersing the samples in solution with gold nanoparticles. The photocatalytic activity of TiO2 was enhanced by 85% via plasmonic activation of AuNPs that increased the lifetime of photogenerated holes and electrons. The improved photocatalytic activity was characterized with both UVA and visible light irradiation using an in-house built gas-phase photoreactor.