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<p>In this research study, a novel and highly efficient nanocomposite, ZnFe<sub>2</sub>O<sub>4</sub> nanoparticles decorated with sulfonated melamine, was synthesized and introduced for the removal of tartrazine as an artificial food color. FT-IR, SEM-EDX, XRD, TGA, BET, and TEM were used for characterization of the sorbent. The impacts of the main factors on the tartrazine removal (%) including pH, amount of nanosorbent, vortex time, and temperature were investigated in which the optimum conditions of 3, 10 mg, 1 min, and 30 °C were obtained respectively and resulted in maximum removal (%) of 100. The studies on the adsorption isotherms affirmed to be appropriately fitted to the Langmuir isotherm with high adsorption capacity of 256.41 mg&#xa0;g<sup>−1</sup>. The thermodynamic parameters were also appraised and ΔH° and ΔS° values are + 59.2298 and  + 0.2231 in which the positive value of ΔH° declares the endothermic nature of the process and the positive value of ΔS° affirms the randomness of the system raised during the sorption process. The adsorption of tartrazine followed the pseudo-second order kinetic model. The potential of the method was evaluated in some foodstuffs.</p>

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Highly Efficient ZnFe2O4 Nanoparticles Decorated with Sulfonated Melamine for Ultra-fast Adsorptive Removal of Tartrazine from Foodstuffs

  • 期刊论文

  • 发表日期：

    2026年2月16日

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  • Mehrnoosh Naseri,
  • Mahboube Shirani,
  • Abolfazl Semnani,
  • Meisam Shabanian,
  • Saeid Asadpour

摘要

In this research study, a novel and highly efficient nanocomposite, ZnFe2O4 nanoparticles decorated with sulfonated melamine, was synthesized and introduced for the removal of tartrazine as an artificial food color. FT-IR, SEM-EDX, XRD, TGA, BET, and TEM were used for characterization of the sorbent. The impacts of the main factors on the tartrazine removal (%) including pH, amount of nanosorbent, vortex time, and temperature were investigated in which the optimum conditions of 3, 10 mg, 1 min, and 30 °C were obtained respectively and resulted in maximum removal (%) of 100. The studies on the adsorption isotherms affirmed to be appropriately fitted to the Langmuir isotherm with high adsorption capacity of 256.41 mg g−1. The thermodynamic parameters were also appraised and ΔH° and ΔS° values are + 59.2298 and  + 0.2231 in which the positive value of ΔH° declares the endothermic nature of the process and the positive value of ΔS° affirms the randomness of the system raised during the sorption process. The adsorption of tartrazine followed the pseudo-second order kinetic model. The potential of the method was evaluated in some foodstuffs.