Visible-Light Photodegradation of Diisopropanolamine Using Bimetallic Cu-Fe/TiO₂ Photocatalyst

Abstract:

Titania nanoparticles, TiO₂ were synthesized via microemulsion method prior to monometallic (Fe, Cu) or bimetallic (CuFe) incorporation using wet impregnation method. The prepared photocatalysts were characterized using X-ray diffraction, field emission scanning electron microscopy, diffuse reflectance UV-Vis spectroscopy and point of zero charge. The addition of metals, especially Cu enhanced the absorbance in the visible region. The lowest band gap was observed for the bimetallic Cu-Fe/TiO₂ (2.77 eV) compared to bare TiO₂ (3.05 eV). The performance of the photocatalysts for photodegradation of diisopropanolamine (DIPA) at pH 8 was determined using a batch glass reactor under simulated sunlight (980 W/m²). The best performance was displayed by Cu-Fe/TiO₂ with the highest DIPA removal of 92%.

• Periodical: Advanced Materials Research (Volume 845)
• Pages: 421-425
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.845.421
• Online since: December 2013
• Authors: Raihan Mahirah Ramli*, Chong Fai Kait, Abdul Aziz Omar
• Keywords: Copper-Iron, Diisopropanolamine, Photodegradation, TiO₂, Visible-Light

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