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Updated: Dec 20, 2025
In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films
Published on: January 17, 2017
Multilayer TiO2 Inverse Opal with Gold Nanoparticles for Enhanced Photocatalytic Activity
Abid Zulfiqar1, Filipp Temerov1, Jarkko J Saarinen1
1Department of Chemistry, University of Eastern Finland, P.O. Box 111, Joensuu FI-80101, Finland.
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.
