Alginate doped graphene oxide – TiO₂ – Fe₃O₄ nanocomposite: preparation, characterization, and application of sonophotocatalyst for efficient decomposition of an organic dye

ABSTRACT

In this research, the alginate doped graphene oxide (GO)-Fe₃O₄-TiO₂ photomagnetic nanocomposite was synthesised through a three-step method. For comparison, alginate-GO was also prepared. The synthesised materials were characterised through FTIR, XRD, TGA, SEM, EDX, and TEM techniques. The photomagnetic properties of the resultant nanocomposite were evaluated by VSM. Degradation of Malachite green as a dye pollutant was studied in the presence of alginate (Alg), Alg-GO, and Alg-GO-Fe₃O₄-TiO₂ nanocomposite using a sonophotocatalysis technique. The results showed, that, Alg-GO-Fe₃O₄-TiO₂ nanocomposite has high efficiency in the removal of Malachite green. Recycling experiments displayed that the degradation efficiency dropped only by 12%, after five successive runs. and makes it a promising catalyst for efficient degradation of dye pollutants in the practical applications.

KEYWORDS:

• Dye removal
• graphene oxide
• photomagnetic
• sonophotocatalysis
• nanocomposite

Disclosure statement

No potential conflict of interest was reported by the author(s).

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.