Adsorption characteristics of 2,4-dichorophenoxy acetic acid onto surfactant modified titania nanoparticles

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

doi:10.51316/jca.2021.061

Authors

Thi Dung Le Faculty of Chemistry, University of Science, Vietnam National University – Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam | Basic Science Faculty- College of Artillery Officer Training, Thanh Mi, Son Tay, Hanoi, Vietnam Author
Quynh Loan Nguyen Faculty of Chemistry, University of Science, Vietnam National University – Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam | Centre for Disease Control and Prevention Ninh Binh, Ninh Binh, Vietnam Author
Duc Thang Nguyen Faculty of Chemistry, University of Science, Vietnam National University – Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam Author
Thanh Son Le Faculty of Chemistry, University of Science, Vietnam National University – Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam Author
Tien Duc Pham Faculty of Chemistry, University of Science, Vietnam National University – Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam Author

DOI:

https://doi.org/10.51316/jca.2021.061

Keywords:

Adsorption, 2,4-D, titania, nanomaterial, CTAB

Abstract

The present study investigated adsorption of 2,4-dichorophenoxy acetic acid (2,4-D) on titania (TiO₂) nanoparticles with surface modification by cationic surfactant, cetyltrimethylammonium bromide (CTAB). Titania nanoparticles which were successfully synthesized by sol-gel method, were characterized by X-ray diffraction (XRD) and Transmission electron microscopy (TEM). Surface modification of TiO₂ with CTAB enhanced the removal of 2,4-D significantly. Some effective conditions affect to the removal of 2,4-D using CTAB modified TiO₂ such as pH and adsorbent dosage were systematically studied and found to be 5 and 10 mg/mL, respectively. Adsorption mechanisms of 2,4-D onto CTAB modified TiO₂ was suggested based on the change in surface charge after adsorption.

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