bcmubx2103 – Synthesis of novel hybrid Au-TiO2 nanoparticles for water remediation
BB_Poster_Fangyuan-ZhengAbstract
Titanium dioxide (TiO2) is one of the most used photocatalysts during wastewater treatment due to its relevant properties. However, TiO2 is limited by its large bandgap (≈ 3 eV), which results in poor efficiency upon visible light irradiation.[1] To overcome this limitation, Au can be employed because its characteristic localised surface plasmon resonance band takes place in the visible region. Nevertheless, most of the works use the spherical gold nanoparticles in Au:TiO2,[2] limiting the spectral irradiation region in the 500-550 nm, and wasting a large portion of
visible radiation. Herein, new methods have been explored to synthesis hybrid Au:TiO2 nanoparticles with metal shape anisotropy that expand the plasmonic absorption covering both visible and near IR regions.
References
[1] Singh S, Mahalingam H, Singh PK, Applied Catalysis A: General, 462-463 (2013)178-195
[2] Kochuveedu ST, Jang YH, Kim DH, Chem. Soc. Rev., 42 (2013) 8467-8493
Figure 1: TEM image of hybrid Au:TiO2 nanoparticles synthesized
Figure 2: Absorption spectra of gold, hybrid Au:TiO2 nanoparticles with different morphology different morphology by UV-Vis.
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