Issue 29, 2024

Controlling nanoparticle placement in Au/TiO2 inverse opal photocatalysts

Abstract

Gold nanoparticle-loaded titania (Au/TiO2) inverse opals are highly ordered three-dimensional photonic structures with enhanced photocatalytic properties. However, fine control over the placement of the Au nanoparticles in the inverse opal structures remains challenging with traditional preparative methods. Here, we present a multi-component co-assembly strategy to prepare high-quality Au/TiO2 inverse opal films in which Au nanoparticles are either located on, or inside the TiO2 matrix, as verified using electron tomography. We report that Au nanoparticles embedded in the TiO2 support exhibit enhanced thermal and mechanical stability compared to non-embedded nanoparticles that are more prone to both leaching and sintering.

Graphical abstract: Controlling nanoparticle placement in Au/TiO2 inverse opal photocatalysts

Supplementary files

Article information

Article type
Communication
Submitted
18 Mar 2024
Accepted
17 Jun 2024
First published
19 Jun 2024
This article is Open Access
Creative Commons BY-NC license

Nanoscale, 2024,16, 13867-13873

Controlling nanoparticle placement in Au/TiO2 inverse opal photocatalysts

M. Bijl, K. R. G. Lim, S. Garg, N. J. Nicolas, N. L. Visser, M. Aizenberg, J. E. S. van der Hoeven and J. Aizenberg, Nanoscale, 2024, 16, 13867 DOI: 10.1039/D4NR01200C

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