Synthesis, characterization of Hollandite Ag2Mn8O16 on TiO2 nanotubes and their photocatalytic properties for Rhodamine B degradation

• Main Authors: Thabit Mohamed, Liu Huiling, Zhang Jian, Wang Bing
• Format: Article
• Language: English
• Published: Sciendo 2018-06-01
• Series: Polish Journal of Chemical Technology
• Subjects: ag-mno2/tio2; ag2mn8o16; nanotubes; nanocrystals; photoelectrode; electrochemical deposition; rhodamine b; photo-catalytic efficiency
• Online Access: https://doi.org/10.2478/pjct-2018-0027

In this research Ag2Mn8O16 nanocrystals/TiO2 nanotubes, photoelectrodes were successfully prepared through anodization and annihilation steps, followed by electrodeposition of MnO2 and Ag in a three electrodes cell. The obtained photoelectrodes were dried, then annealed for crystallization, the morphology and structure of the fabricated electrodes were characterized via scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The light absorption and harvesting properties were investigated through UV–visible diffuse reflectance spectrum (DRS), photocatalytic performances were evaluated by degradation of 50 mL of Rhodamine B (5 mg L−1) under Xenon light irradiation for 2 h. Results illustrated that the fabricated photoelectrodes show remarkable photo-degradation properties of organic pollutants in aqueous mediums.