Ayala, I. V. , Mejia-Ospino, E. , Gonzalez-Arias, C. , Cabanzo-Hernandez, R. , VALBUENA NIÑO, ELY DANNIER, IOP Publishing
No
J. Phys. Conf. Ser.
Proceedings Paper
Científica
01/01/2024
001187332000003
2-s2.0-85188325158
The present study compares two synthesis routes to obtain titanium dioxide and reduced graphene oxide nanocomposites that could be used as photoelectrodes in a water-splitting photoelectrocatalytic system. The nanocomposites were obtained using in-situ sol-gel and solvothermal methods as fabrication routes. Subsequently, the materials obtained were characterized by Fourier transform infrared spectroscopy, Raman spectroscopy, and ultraviolet-visible diffuse reflectance spectroscopy techniques. The results indicated a strong interaction between reduced graphene oxide and titanium dioxide nanomaterials using both synthesis processes; however, the in-situ sol-gel method exhibited more significant conservation of the aromatic rings of the graphene structure and a lower bandgap (2.45 eV), which are suitable characteristics for its potential use in photoelectrocatalytic processes.
Fourier transform infrared spectroscopy; Graphene; Nanocomposites; Sol-gel process; Sol-gels; Diffuse reflectance spectroscopy; Fabrication routes; Graphene oxide nanocomposites; Photoelectrocatalytic; Photoelectrode; Reduced graphene oxides; Sol- gel methods; Solvothermal method; Synthesis route; Water splitting; Titanium dioxide