{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Dingenen F"],"funding":["Fonds Wetenschappelijk Onderzoek"],"pagination":["2624"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC8540643"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["11(10)"],"pubmed_abstract":["To broaden the activity window of TiO2, a broadband plasmonic photocatalyst has been designed and optimized. This plasmonic 'rainbow' photocatalyst consists of TiO2 modified with gold-silver composite nanoparticles of various sizes and compositions, thus inducing a broadband interaction with polychromatic solar light. However, these nanoparticles are inherently unstable, especially due to the use of silver. Hence, in this study the application of the layer-by-layer technique is introduced to create a protective polymer shell around the metal cores with a very high degree of control. Various TiO2 species (pure anatase, PC500, and P25) were loaded with different plasmonic metal loadings (0-2 wt %) in order to identify the most solar active composite materials. The prepared plasmonic photocatalysts were tested towards stearic acid degradation under simulated sunlight. From all materials tested, P25 + 2 wt % of plasmonic 'rainbow' nanoparticles proved to be the most promising (56% more efficient compared to pristine P25) and was also identified as the most cost-effective. Further, 2 wt % of layer-by-layer-stabilized 'rainbow' nanoparticles were loaded on P25. These layer-by-layer-stabilized metals showed superior stability under a heated oxidative atmosphere, as well as in a salt solution. Finally, the activity of the composite was almost completely retained after 1 month of aging, while the nonstabilized equivalent lost 34% of its initial activity. This work shows for the first time the synergetic application of a plasmonic 'rainbow' concept and the layer-by-layer stabilization technique, resulting in a promising solar active, and long-term stable photocatalyst."],"journal":["Nanomaterials (Basel, Switzerland)"],"pubmed_title":["Layer-by-Layer-Stabilized Plasmonic Gold-Silver Nanoparticles on TiO2: Towards Stable Solar Active Photocatalysts."],"pmcid":["PMC8540643"],"funding_grant_id":["FN 700300001 – Aspirant F. Dingenen"],"pubmed_authors":["Blommaerts N","Bals S","Verbruggen SW","Borah R","Lenaerts S","Dingenen F","Arenas-Esteban D","Van Hal M"],"additional_accession":[]},"is_claimable":false,"name":"Layer-by-Layer-Stabilized Plasmonic Gold-Silver Nanoparticles on TiO2: Towards Stable Solar Active Photocatalysts.","description":"To broaden the activity window of TiO2, a broadband plasmonic photocatalyst has been designed and optimized. This plasmonic 'rainbow' photocatalyst consists of TiO2 modified with gold-silver composite nanoparticles of various sizes and compositions, thus inducing a broadband interaction with polychromatic solar light. However, these nanoparticles are inherently unstable, especially due to the use of silver. Hence, in this study the application of the layer-by-layer technique is introduced to create a protective polymer shell around the metal cores with a very high degree of control. Various TiO2 species (pure anatase, PC500, and P25) were loaded with different plasmonic metal loadings (0-2 wt %) in order to identify the most solar active composite materials. The prepared plasmonic photocatalysts were tested towards stearic acid degradation under simulated sunlight. From all materials tested, P25 + 2 wt % of plasmonic 'rainbow' nanoparticles proved to be the most promising (56% more efficient compared to pristine P25) and was also identified as the most cost-effective. Further, 2 wt % of layer-by-layer-stabilized 'rainbow' nanoparticles were loaded on P25. These layer-by-layer-stabilized metals showed superior stability under a heated oxidative atmosphere, as well as in a salt solution. Finally, the activity of the composite was almost completely retained after 1 month of aging, while the nonstabilized equivalent lost 34% of its initial activity. This work shows for the first time the synergetic application of a plasmonic 'rainbow' concept and the layer-by-layer stabilization technique, resulting in a promising solar active, and long-term stable photocatalyst.","dates":{"release":"2021-01-01T00:00:00Z","publication":"2021 Oct","modification":"2025-04-18T13:34:55.29Z","creation":"2025-04-04T10:56:13.713Z"},"accession":"S-EPMC8540643","cross_references":{"pubmed":["34685070"],"doi":["10.3390/nano11102624"]}}