Black Au-Decorated TiO2 Produced via Laser Ablation in Liquid

• DOI: 10.1021/acsami.0c20463
• Publication Date: 2021-01-27T16:42:48Z
• Authors: Stanislav O. Gurb...; Evgeny Modin; Vladislav Puzikov; Pavel Tonkaev; Dmitriy Storozhenko; Aleksandr Sergeev; Neli Mintcheva; Shigeru Yamaguchi; Natalie N. Tarasenka; Andrey Chuvilin; Sergey Makarov; Sergei A. Kulinich; Aleksandr A. Kuch...
• Keywords: Nanoclusters; Laser Ablation

The rational combination of plasmonic and all-dielectric concepts within hybrid nanomaterials provides a promising route toward devices with ultimate performance extended modalities. Spectral matching Mie-type resonances for such nanostructures can only be achieved their dissimilar characteristic sizes, thus making the resulting nanostructure geometry complex practical realization large-scale replication. Here, we produced amorphous TiO2 nanospheres decorated doped Au nanoclusters via single-step nanosecond-laser irradiation commercially available nanopowders dispersed in aqueous HAuCl4. Fabricated hybrids demonstrate remarkable light-absorbing properties (averaged value ≈96%) visible near-IR spectral range mediated by bandgap reduction laser-processed as well plasmon decorating nanoclusters. findings are supported optical spectroscopy, electron energy loss transmission microscopy, electromagnetic modeling. Light-absorbing were implemented to catalytically passive SERS biosensor identification analytes at trace concentrations solar steam generator that permitted increase water evaporation rate 2.5 times compared pure under identical 1 sun conditions.