Decolorization of Reactive Black 5 dye using gel combustion synthesized LaFeO3 nanoparticles

Authors

  • Arif Aizat Universiti Teknologi Malaysia
  • Farhana Aziz Universiti Teknologi Malaysia
  • Mohd Zamri Mohd Yusop Universiti Teknologi Malaysia
  • Juhana Jaafar Universiti Teknologi Malaysia
  • Norhaniza Yusof Universiti Teknologi Malaysia
  • Wan Norhayati Wan Salleh Universiti Teknologi Malaysia
  • Ahmad Fauzi Ismail Universiti Teknologi Malaysia

DOI:

https://doi.org/10.11113/mjfas.v15n3.1459

Keywords:

Lanthanum orthoferrite, Combustion method, Reaction time, Photocatalysis, Dye degradation

Abstract

Lanthanum orthoferrite (LaFeO3) nanoparticles was prepared via gel combustion method with fixed reaction temperature at 200°C, but different reaction time of (t) 2 hours (t=2h) and 24 hours (t=24h), respectively. Physicochemical properties' characterization was performed to compare both samples. UV-Vis spectroscopy analysis was done to determine the photocatalytic performance on Reactive Black 5 (RB5) dye. LaFeO3(t=24h) possessed a high crystallinity structure with specific surface area (SSA) of 28.037 m2g-1, while LaFeO3(t=2h) had a mixture of crystalline and amorphous structures with SSA of 40.952 m2g-1. The catalysts’ loading was also varied in a few conditions to elucidate the optimum loading that maximize the dye removal by mean of adsorption-photocatalytic action. Up to 94% of RB5 dye was successfully removed within 6h by LaFeO3(t=2h) samples, and this enhanced synergistic activity of LaFeO3 is promising for the further application of visible light driven photocatalyst in polluted water treatment.

Author Biographies

Arif Aizat, Universiti Teknologi Malaysia

Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering

Farhana Aziz, Universiti Teknologi Malaysia

Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering

Mohd Zamri Mohd Yusop, Universiti Teknologi Malaysia

Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering

Juhana Jaafar, Universiti Teknologi Malaysia

Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering

Norhaniza Yusof, Universiti Teknologi Malaysia

Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering

Wan Norhayati Wan Salleh, Universiti Teknologi Malaysia

Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering

Ahmad Fauzi Ismail, Universiti Teknologi Malaysia

Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering

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Published

02-07-2019