Kerkez, OzgeBoz, Ismail2024-03-132024-03-1320140022-36971879-2553https://doi.org/10.1016/j.jpcs.2013.12.019https://hdl.handle.net/20.500.12662/4208In the present study, a two-step method was applied to synthesise Cu2+-modified TiO2 nanorod array thin films for photocatalytic processes. TiO2 nanorod array thin films were synthesised by a hydrothermal method and then modified with an ultrasonic-assisted sequential cation adsorption method. The samples were characterised by X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (DRS), scanning electron microscopy (SEM), photoluminescence (PL) spectroscopy and inductively coupled plasma mass spectroscopy (ICP-MS) analysis. The photoelectrochemical properties of the samples were evaluated by linear sweep voltammetry and Mott-Schottky analysis; photocatalytic activities were tested by methylene blue degradation under visible light. The photocurrent density of the TiO2/FTO sample modified with 50 mM Cu2+ solution was 26 times higher than that of the unmodified TiO2/FTO sample. Additionally, methylene blue degradation efficiency under visible light was increased 40% with respect to the efficiency of the unmodified sample. The mechanism of the photocatalytic activity enhancement of Cu2+-modified TiO2 nanorod films was discussed. (C) 2013 Elsevier Ltd. All rights reserved.eninfo:eu-repo/semantics/closedAccessThin filmsCrystal growth/Chemical synthesisX-ray diffractionElectrochemical properties/Surface propertiesArticle10.1016/j.jpcs.2013.12.0192-s2.0-848941470716185Q261175WOS:000333855500006Q2