Photocatalytic activity of graphene oxide-TiO₂ thin films sensitized by natural dyes extracted from Bactris guineensis.

ABSTRACT: This study synthesized and characterized composites of graphene oxide and TiO₂ (GO-TiO₂). GO-TiO₂ thin films were deposited using the doctor blade technique. Subsequently, the thin films were sensitized with a natural dye extracted from a Colombian source (Bactris guineensis). Thermogravimetric analysis, X-ray diffraction, Raman spectroscopy, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and diffuse reflectance measurements were used for physico-chemical characterization. All the samples were polycrystalline in nature, and the diffraction signals corresponded to the TiO₂ anatase crystalline phase. Raman spectroscopy and Fourier transform infrared spectroscopy (FTIR) verified the synthesis of composite thin film

SUBMITTER: Vallejo W 

PROVIDER: S-EPMC6458387 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature