Synthesis of Nano-Ilmenite (FeTiO3) doped TiO2/Ti Electrode for Photoelectrocatalytic System

International Conference of Applied Science and Technology for Infrastructure Engineering

土木建筑工程;材料科学

Hikmawati^1 ; Watoni, A.H.^1 ; Wibowo, D.^1 ; Maulidiyah^1 ; Nurdin, M.^1

Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Halu Oleo, Jl. H.E.A. Mokodompit Kampus Baru Anduonohu, Kendari - Southeast Sulawesi

93232, Indonesia^1

关键词: Coating process;    Degradation test;    Linear sweep voltammetry;    Liquid phase deposition method;    Photo-electrocatalysis;    Photoelectrocatalytic;    Photoelectrochemicals;    Visible light;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/267/1/012005/pdf
DOI  :  10.1088/1757-899X/267/1/012005

来源: IOP

【 摘 要 】

Ilmenite (FeTiO3) doped on Ti and TiO2/Ti electrodes were successfully prepared by using the sol-gel method. The structure, morphology, and optical properties of FeTiO3are characterized by XRD, UV-Vis DRS, and SEM. The FeTiO3and TiO2greatly affect the photoelectrocatalysis performance characterized by Linear Sweep Voltammetry (LSV) and Cyclic Voltammetry (CV). The characterization result shows a band gap of FeTiO3is 2.94 eV. XRD data showed that FeTiO3formed at 2θ were 35.1° (110), 49.9° (024), and 61.2° (214). The morphology of FeTiO3/Ti and FeTiO3.TiO2/Ti using SEM shows that the formation of FeTiO3thin layer signifies the Liquid Phase Deposition method effectively in the coating process. Photoelectrochemical (PEC) test showed that FeTiO3.TiO2/Ti electrode was highly oxidation responsive under visible light compared to the FeTiO3/Ti electrodes i.e. 7.87×10-4A and 9.87×10-5A. Degradation test of FeTiO3/Ti and FeTiO3.TiO2/Ti electrodes on titan yellow showed that the percentages of degradation with photoelectrocatalysis at 0.5 mg/L were 41% and 43%, respectively.