Titanium dioxide thin films: a study of film morphology and structural changes upon photocatalytic degradation of methylene blue

21st Latin American Symposium on Solid State Physics

Naranjo, A.^1 ; Zambrano, G.^1 ; Torres, W.^2 ; Gómez, M.E.^1

Physics Department, Thin Films Group, Universidad Del Valle, Calle 13 No 100-00, Cali, Colombia^1

Chemistry Department, Electrochemistry Group, Universidaddel Valle, Calle13 No 100-00, Cali, Colombia^2

关键词: Compositional changes;    Energy dispersive x-ray;    Photo catalytic degradation;    Photocatalytic activities;    Reactive DC magnetron sputtering;    TiO2 thin films;    Titanium dioxide thin film;    UV-light irradiation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/480/1/012026/pdf
DOI  :  10.1088/1742-6596/480/1/012026

来源: IOP

【 摘 要 】

TiO2thin films were deposited by reactive DC-magnetron sputtering at different Ar/O2ratios in the gas mixture. The photocatalytic activity (under UV light irradiation) of these films was evaluated upon degradation of aqueous solutions of methylene blue (MB), a model organic pollutant. Upon photocatalysis, the TiO2films showed structural, morphological and compositional changes that were characterized by X-ray diffraction (XRD), Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM) and energy dispersive X-ray (EDX).