Effective Removal of Sulfonamides Using Recyclable MXene-Decorated Bismuth Ferrite Nanocomposites Prepared via Hydrothermal Method

Abstract

Developing a simple and efficient method for removing organic micropollutants from aqueous systems is crucial. The present study describes the preparation and application, for the first time, of novel MXene-decorated bismuth ferrite nanocomposites (BiFeO3/MXene) for the removal of six sulfonamides including sulfadiazine (SDZ), sulfathiazole (STZ), sulfamerazine (SMZ), sulfamethazine (SMTZ), sulfamethoxazole (SMXZ) and sulfisoxazole (SXZ). The properties of BiFeO3/MXene are enhanced by the presence of BiFeO3 nanoparticles, which provide a large surface area to facilitate the removal of sulfonamides. More importantly, BiFeO3/MXene composites demonstrated remarkable sulfonamide adsorption capabilities compared to pristine MXene, which is due to the synergistic effect between BiFeO3 and MXene. The kinetics and isotherm models of sulfonamide adsorption on BiFeO3/MXene are consistent with a pseudo-second-order kinetics and Langmuir model. BiFeO3/MXene had appreciable reusability after five adsorption–desorption cycles. Furthermore, BiFeO3/MXene is stable and retains its original properties upon desorption. The present work provides an effective method for eliminating sulfonamides from water by exploiting the excellent texture properties of BiFeO3/MXene.

Robust degradation of tetracycline antibiotic through recyclable Fe3S4/Ti3C2MXene composites

“…Ti 3 C 2 MXene has been synthesized by etching the MAX phase with hydrofluoric acid (HF) according to previous work. 19 5.0 g of MAX phase was immersed in 80 mL HF solution (40%), and the Al layer was peeled off by stirring for 24 hours at room temperature. The obtained product underwent multiple washes with distilled water until the pH approached 7.…”

“…The addition of BiFeO 3 nanoparticles to MXene improves their properties by increasing the available surface area for efficient sulfonamide removal. 19 Yan et al synthesized Nb 2 CT x MXene nanosheets and used them as an adsorbent for dyes. Their results revealed that the synthesized adsorbent exhibits excellent absorption capability for both cationic and anionic dyes, with a maximum adsorption capacity beyond 500 mg g −1 .…”

Microwave-Irradiation-Assisted Synthesis of Bismuth Ferrite Nanoparticles: Investigating Fuel-to-Oxidant Ratios

“…Hence, the scientific significance of BiFeO 3 is firmly rooted in the relentless pursuit of advancing our comprehension of these multifunctional nanoparticles and harnessing their capabilities for theoretical and practical advancements in numerous research arenas [15,16]. The synthesis of BiFeO 3 nanoparticles encompasses an array of techniques, including solid-state reactions [17], coprecipitation [18], the wet chemical route [19], microemulsion technique [20], the hydrothermal route [21], the sol-gel process [22], the auto-combustion route [23], sono-synthesis [24], the Pechini method [25], microwave methods [26], and others [27]. These techniques have been meticulously scrutinized and enhanced to produce BiFeO 3 nanostructures with tailored properties suited for diverse applications.…”