Silver nanostructure-decorated hierarchical titanium dioxide nanoflowers for SERS and photocatalytic applications
Nuray Serginay, Hayrunnisa Mazlumoğlu, Aslı Yilmaz, Mehmet Yılmaz
Abstract
In this study, we propose the synthesis of silver (Ag) nanoparticle decorated TiO2 nanoflowers (TNFs) using a polymeric conformal thin film of 3,4-dihydroxyphenyl-L-alanine (PLDOPA). The size, as well as interparticle distance of the decorated Ag nanostructures, were tuned by simply changing the number of supplied Ag ions. The resultant nanocomposite system ([email protected]@Ag) showed unique SERS activity with high reproducibility and an enhancement factor of 4.2 × 107. Also, as an ideal photocatalytic system, the [email protected]@Ag enabled the catalytic degradation of malachite green under visible light irradiation.
Topics & Concepts
Malachite greenPhotocatalysisNanostructureMaterials scienceCatalysisTitanium dioxideNanocompositeNanotechnologyChemical engineeringNanoparticleIonDegradation (telecommunications)ChemistryOrganic chemistryMetallurgyTelecommunicationsComputer scienceAdsorptionEngineeringGold and Silver Nanoparticles Synthesis and ApplicationsAdvanced Photocatalysis TechniquesAdvanced Nanomaterials in Catalysis