Abstract

Eman Alzahrani^1*, Rasha A Ahmed² and Reem Sattam Alotaibi¹

DOI : http://dx.doi.org/10.13005/ojc/360120

A synthesis of a new chitosan/TiO2NPs nanocomposite was conducted, whereby the use of TiO2NPs was for it to act in the form of photocatalyst while the use of chitosan was for it to act as the nanoparticles immobilisation agent when TiO2NPs and chitosan are in combination. They were used under UV source for photodegradation of anionic and cationic, as well as for removing neutral dyes dissolved in water. Several techniques like scanning electron microscope (SEM) and energy-dispersive X-ray (EDAX) spectroscopy, together with Fourier-transform infrared spectroscopy (FT-IR) analysis and swelling ratio were all used in characterising the fabricated membranes. The incorporation of TiO2NPs in the chitosan network was revealed by FT-IR analysis. The confirmation of their spherical shape and nanoparticles was made by SEM. The dyes were completely eliminated under UV light in this order of CS, CS/Low TiO2NPs, CS/Mid TiO2NPs, and CS/High TiO2NPs.

Chitosan Membranes, Dyes, Photodegradation, TiO2NPs, Wastewater Treatment.

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