Photoelectrochemical characterization of anatase-rutile mixed TiO2 nanosponges

This work studies the influence of using hydrodynamic conditions during anodization on the morphology and electrochemical properties of anatase/rutile mixed TiO2 nanotubes (Reynolds number, Re = 0) and nanosponges (Re > 0). To this purpose different techniques were used, such as: microscopy techniques (Field-Emission Scanning Electron Microscope, FE-SEM, and Confocal Laser-Raman Spectroscopy), Electrochemical Impedance Spectroscopy (EIS), Mott Schottky (MS) analysis and photoelectrochemical water splitting tests. This investigation demonstrates that the morphology of TiO2 nanostructures may be greatly affected due to the hydrodynamic conditions and it can be adjusted in order to increase the efficiency for energy and environmental applications. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.Authors would like to express their gratitude for their financial support to the Generalitat Valenciana (PROMETEOII/2014/009).Fernández Domene, RM.; Sánchez Tovar, R.; Sanchez-Gonzalez, S.; García Antón, J. (2016). Photoelectrochemical characterization of anatase-rutile mixed TiO2 nanosponges. International Journal of Hydrogen Energy. 41(41):18380-18388. https://doi.org/10.1016/j.ijhydene.2016.08.0121838018388414