Remediation of Safranin-O and acid fuchsin by using Ti3C2 MXene /rGo-Cu2O nanocomposite: Preparation, characterization, isotherm, kinetic and thermodynamic studies.

In recent years, MXene has become one of the most intriguing two-dimensional layered (2Dl) materials extensively explored for various applications. In this study, a Ti 3 C 2 MXene/rGo-Cu 2 O Nanocomposite (TGCNCs) was developed to eliminate Safranin-O effectively (SO) and Acid Fuchsin (AF) as cationic dyes from the aquatic environment. Multistep was involved in the preparation of the adsorbent system, including the Preparation of Ti 3 C 2 , after that, GO synthesis by the Humer method, followed by rGO production, then added CuSO 4 to obtain a final Nanocomposite (NCs) called "TGCNCs". The structure of TGCNCs can be varied in several ways, including FTIR, SEM, TGA, Zeta, EDX, XRD, and BET, to affirm the efficacious preparation of TGCNCs. A novel adsorbent system was developed to remove SO and AF, both cationic dyes. Various adsorption conditions have been optimized through batch adsorption tests, including the pH of the solution (4–12), the effect of dosage (0.003–0.03 g), the impact of the contact time (5–30 min), and the effect of beginning dye concentration (25–250 mg/L). Accordingly, the TGCNCs exhibited excellent fitting for Freundlich isotherm mode, resulting in maximum AF and SO adsorption capacities of 909.09 and 769.23 mg g−1. This research on adsorption kinetics suggests that a pseudo-second-order (PSO) model would fit well with the experimental data (R S O 2 = 0.998 and R A F 2 = 0.990). It is evident from the thermodynamic parameters that adsorption is an endothermic process that is spontaneous and favorable. During the adsorption of SO and AF onto NCs, it is hypothesized that these molecules interact intramolecularly through stacking interactions, H-bond interactions, electrostatic interactions, and entrapment within the polymeric Poros structure nanocomposite. Regeneration studies lasting up to five cycles were the most effective for both organic dyes under study. [Display omitted] • A multifunctional adsorption system based on Ti 3 C 2 MXenes and rGO/Cu 2 O is developed to remove toxic dyes. • This method is straightforward to use for synthesizing Ti 3 C 2 MXene from Ti 3 AlC 2. • Freundlich isotherms and pseudo-second-order kinetics fitted adsorption data. • The Ti 3 C 2 MXene/rGo-Cu 2 O Nanocomposite was reused at least five more times. • The composite's Qmax for Safranin-O and Acid Fuchsin was 909.09 and 769.23 mg/g. [ABSTRACT FROM AUTHOR]