Photocatalysis degradation of 2,4-dichlorophenoxyacetic acid in water environment using synthesized TiO2 nanoparticles

Dung Le Thi, Loan Nguyen Quynh, Thang Nguyen Duc, Son Le Thanh, Duc Pham Tien

Abstract


The present study investigated the photodegradation of 2,4-Dichlorophenoxyacetic acid (2,4-D) in a water environment using synthesized titania nanoparticles (TiO2-NPs). The TiO2-NPs fabricated by sol-gel method were distinguished by X-ray diffraction (XRD) and Transmission electron microscopy (TEM), Infrared spectroscopy (IR), and zeta potential measurements. The results indicated that TiO2 - NPs were nanospheres of appropriately 30nm with a major anatase phase. Synthesized TiO2-NPs have the point of zero charge (PZC) of around 6.0. The efficient conditions for photocatalysis degradation of 2,4-D under sunlight were considered and found to be 120 min, pH 11, and 1 mM KCl. Under ideal conditions, the photodegradation efficiency of 2,4-D reached greater than 72 %. Our results suggest that TiO2-NPs would be promisingly applied for eliminating 2,4-D from an aqueous solution.

Keywords


2,4-D; TiO2; nanomaterial; photocatalysis

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References


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DOI: https://doi.org/10.51316/jca.2022.048

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