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Enhanced sonophotocatalytic degradation of paracetamol in the presence of Fe-doped TiO2 nanoparticles and H2O2

Authors
  • Yap, Hui Cheng1
  • Pang, Yean Ling1
  • Lim, Steven1
  • Lai, Chin Wei2
  • Abdullah, Ahmad Zuhairi3
  • 1 Universiti Tunku Abdul Rahman, Kajang, Selangor, 43000, Malaysia , Kajang (Malaysia)
  • 2 University of Malaya, Kuala Lumpur, 50603, Malaysia , Kuala Lumpur (Malaysia)
  • 3 Universiti Sains Malaysia, Nibong Tebal, Penang, 14300, Malaysia , Nibong Tebal (Malaysia)
Type
Published Article
Journal
Environmental Earth Sciences
Publisher
Springer-Verlag
Publication Date
Sep 25, 2020
Volume
79
Issue
19
Identifiers
DOI: 10.1007/s12665-020-09194-x
Source
Springer Nature
Keywords
License
Yellow

Abstract

The presence of pharmaceutical compounds, particularly, paracetamol in water is of significant environmental concern due to their undesirable effects on aquatic organisms and poor biodegradability. The present work investigated the efficient degradation of paracetamol in water using sonophotocatalytic process in the presence of iron (Fe)-doped titanium dioxide (TiO2) nanoparticles. The effects of Fe doping into TiO2 and calcination temperatures were investigated using field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, nitrogen adsorption–desorption analysis and X-ray photoelectron spectroscopy. It was discovered that 3 wt% Fe dopants into TiO2 nanoparticles with suitable calcination temperature at 600 °C could improve the sonophotocatalytic activity remarkably toward the degradation of paracetamol. The degradation efficiency of 100% was achieved under optimal experimental conditions, namely 5 mg/L initial paracetamol, 1 g/L 3 wt% Fe-doped TiO2-600, solution pH of 5, 0.5 mM of hydrogen peroxide (H2O2) after 30-min ultrasonic power of 296 W, ultrasonic frequency of 50 kHz and ultraviolet wavelength of 302 nm. These findings are crucial for designing Fe-doped TiO2 nanoparticles with high catalytic performance for the degradation of paracetamol and appeared as an alternative solution to treat pharmaceutical compounds effectively.

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