Multilayer TiO2 Inverse Opal with Gold Nanoparticles for Enhanced Photocatalytic Activity | Zendy

Abid Zulfiqar | Zendy; Filipp Temerov | Zendy; Jarkko J. Saarinen | Zendy

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Multilayer TiO₂ Inverse Opal with Gold Nanoparticles for Enhanced Photocatalytic Activity

Author(s) -

Abid Zulfiqar,

Filipp Temerov,

Jarkko J. Saarinen

Publication year - 2020

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.0c00833

Subject(s) - photocatalysis , materials science , colloidal gold , titanium dioxide , nanoparticle , chemical engineering , irradiation , visible spectrum , plasmon , titanium , nanotechnology , photochemistry , catalysis , optoelectronics , composite material , chemistry , metallurgy , physics , nuclear physics , engineering , biochemistry

Three-dimensional highly ordered multilayer titanium dioxide (TiO 2 ) 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 TiO 2 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.

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