Preparation and characterisation of bismuth-doped TiO2 nanotubes (Bi-TiO2-NT) and its photocatalytic activity test for rhodamine B elimination under visible light

M. A. Aqil, J. Gunlazuardi

Research output: Contribution to journalConference articlepeer-review


As a photocatalyst, TiO2 nanotubes can effectively degrade dyes; thus, they exhibit a considerable potential to mitigate the problem of river pollution by dye waste originating from the textile industry. However, with a band gap of 3.2 eV (UV light energy range), such nanotubes cannot be completely utilizing under visible light from the sun. Therefore, in this study, the TiO2 nanotubes are modified using bismuth to obtain bismuth-doped TiO2-NT (Bi-TiO2-NT), which exhibits an activity under visible light. Bi-TiO2-NT was successfully synthesized by one-step anodization with Bi(NO3)3 as the dopant source. The optimum synthesis conditions obtained were as follows: 1.0 M Bi(NO3)3 in an ethylene glycol electrolyte with anodization at 40 V for 1 h. In this study, the synthesized photocatalyst was characterized using X-Ray Diffraction (XRD), Fourier Transform Infrared (FTIR), UV-Vis Diffuse Reflectance Spectroscopy (DRS), Scanning Electron Microscopy-Energy Dispersive X-Ray Spectroscopy (SEM-EDS), and Linear Sweep Voltametry (LSV). The results of the photocatalytic activity tests indicated that under visible light illumination the prepared Bi-TiO2-NT was able to eliminate rhodamine B from the tested water, better then bare TiO2.

Original languageEnglish
Article number012051
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 29 Jan 2020
EventBasic and Applied Sciences Interdisciplinary Conference 2017, BASIC 2017 - , Indonesia
Duration: 18 Aug 201719 Aug 2017


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