Performance of mesoporous TiO2–g-C3N4 prepared by simple ultrasonic method for removal of organic dyes from waste water

• Published in: Journal of materials science. Materials in electronics Vol. 34; no. 36; p. 2329
• Main Authors: Khairy, M., Khalifa, Magdi E., Abdelrahman, Ehab A., Aissa, Mohamed Ali Ben, Dridi, Khaireddine Mohamed, Said, Ridha Ben, Raza, Nadeem, Modwi, Abueliz
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-12-2023; Springer Nature B.V
• Subjects: Adsorbents; Adsorption; Carbon nitride; Characterization and Evaluation of Materials; Chemistry and Materials Science; Dyes; Indigo; Industrial wastes; Malachite green; Materials Science; Nanocomposites; Optical and Electronic Materials; Photoelectrons; Rhodamine; Solid phases; Titanium carbonitride; Titanium dioxide; Ultrasonic methods; Wastewater treatment; X ray powder diffraction
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-023-11694-y

Industrial wastewater treatment using solid phase extraction has emerged as one of the most effective approaches. In this paper, TiO
2
–g-C
3
N
4
nanocomposite was prepared by a simple one-step ultrasonic method and used as an adsorbent for the elimination of Rhodamine B (RhB) dye. X-ray powder diffraction XRD, Transmission electron microscopy, X-ray photoelectron spectrometer and RAMAN were utilized to characterize the TiO
2
–g-C
3
N
4
nanocomposite. The impacts of initial RhB dye concentration, contact time, and pH were investigated. The adsorption capacity for the elimination of RhB dye was 148.46 mg g
−1
. The analyses of the kinetic model demonstrate that the process exhibited pseudo-second-order kinetics. The suitability and applicability of the Sips model are demonstrated by fitting experimental equilibrium data to various isotherm models. The examination of TiO
2
–g-C
3
N
4
nanocomposite as a suitable adsorbent for several dyes [Rhodamine B (RhB), basic fuchsin, malachite green, congo red, and indigo carmine] demonstrated the nanocomposite’s overall high potential for removal of dyes from industerial wastewater. The adsorption process was found to be spontaneous, thermodynamically favorable and physisorption of RhB molecule onto TiCN nanocomposites.