| Abstrakt: |
Search for water-stable, low-cost materials for sustainable water treatment is on the rise. Recently, phyto-magnetic hybrid materials have been demonstrated as the promising ones, showcasing outstanding water treatment capability, albeit challenging to prepare. Herein, we report the synthesis of peanut shell-embedded magnetic ferrites (MPS) for the scintillating elimination of crystal violet (CV) dye from a series of simulated, spiked, and wastewater. FTIR, FESEM-EDX, VSM, PXRD, and pHZPC elucidate the material characteristics, and CV uptake was mapped concerning various physicochemical parameters like equilibration time (0–90 min), pH (3–11), temperature (298–328 K), ionic strength, and competitive inhibition thwarting from coexistent ions. FTIR suggests the presence of polyphenolic moiety (3428 cm−1) and carbonyl groups (1716 cm−1). FESEM reveals a porous structure with uneven fractures which upon CV uptake converts to a smoother one. Vibrating sample magnetism suggests a typical hysteresis for a soft magnetic material with a saturation magnetization value of 28.464 emu/g and coercivity of 35.240 Oe. The maximum intake capacity is 97.903 mg/g at 298 K, whereas the process follows pseudo-second-order kinetics (R2 = 0.999) and the Langmuir isotherm model (R2 = 0.996). Spontaneity and feasibility of the uptake process were identified from the negative free energy (ΔG = –2.073 kJ/mol), (ΔH = 9.078 kJ/mol), and (ΔS = 0.034 kJ/mol/K). MPS could be revived well using 1:1 MeOH/H2O in up to 91% and elegantly reused for six cycles without significant loss in activity. [ABSTRACT FROM AUTHOR] |
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