Development of polyaniline coated titania-hematite composite with enhanced photocatalytic activity under sun-like irradiation


BOUZIANI A., Yahya M., Naciri Y., Hsini A., Khan M. A., Sillanpaa M., ...More

SURFACES AND INTERFACES, vol.34, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 34
  • Publication Date: 2022
  • Doi Number: 10.1016/j.surfin.2022.102328
  • Journal Name: SURFACES AND INTERFACES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: Photocatalytic reaction, Synergistic effect, PANI@a-Fe2O3@TiO2, Degradation, ONE-POT SYNTHESIS, FACILE SYNTHESIS, METHYL-ORANGE, LIGHT, DEGRADATION, WATER, PHOTODEGRADATION, FABRICATION, ADSORPTION, REMOVAL
  • Gazi University Affiliated: Yes

Abstract

Herein, a novel PANI@Fe2O3@TiO2 (PANI@TF) composite containing different amounts of polyaniline was synthesized by in situ polymerization of aniline monomer in the presence of TF. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), BET surface area, Diffuse reflectance spectroscopy (DRS), X-ray photoelectron (XPS), and scanning electron microscopy (SEM-EDS) were used to study the phase structure, morphology, and optical properties of the synthesized PANI@TF composites. Moreover, for the first time, the photocatalytic property of the as-synthesized PANI@TF composites has been evaluated via the decolorization of MB under sun-like illumination. The findings confirmed that all the PANI@TF ternary composites with different PANI content showed enhanced visible-light photocatalytic activity for methylene blue (MB) dye degradation compared to pure Fe2O3@TiO2. The highest degradation efficiency for MB via 1% PANI@TF ternary catalyst reached 96% after 2 h under sun-like illumination, which was 4.3 higher than TF. Finally, a plausible photocatalytic mechanism for the improved photocatalytic activity was proposed to guide further improvement of its photocatalytic performance.