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<p>Herein, a photo-Fenton system is created via modification of nickel ferrite (NiFe) nanoparticles with carbonaceous lignin moiety to form NiFe-xC nanocomposites by hydrothermal route. The prepared nanocomposites exhibited visible light induced activation, as required for photocatalytic degradation activity. The NiFe-xC nanocomposites were successfully characterized via XRD, FTIR, VSM, FE-SEM, BET, DRS and PL analysis. The nanocomposites were evaluated for degradation of remazol brilliant yellow dye. Interestingly, the nanocomposites exhibited improved photo-Fenton catalytic efficiency than pure NiFe, with satisfactory magnetic properties for easy recoverability. The NiFe-0.5C nanocomposite exhibited best photo-Fenton performance with 95% degradation of dye under 90&#xa0;min of light irradiation and followed pseudo-first-order rate kinetics with rate constant value of 35.9 × 10<sup>–3</sup>&#xa0;min<sup>−1</sup>. The influence of pH, catalyst dosage, oxidant concentration, pollutant concentration and different scavengers were also explored. Radical quenching studies unveiled the participation of different radicals and H<sub>2</sub>O<sub>2</sub> led photo-Fenton degradation mechanism was proposed. The practical utility of NiFe-xC nanocomposites was substantiated from recyclability and real sample analysis. As evidenced from PL studies, presence of lignin played role by declining charge carrier recombination rate during degradation reaction, thus allowing photoinduced charges to participate in catalytic process. These experimental findings revealed that the designed photo-Fenton system acts as promising material for treatment of dyes present in contaminated water.</p>

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Probing the photo-Fenton potential of magnetically recoverable lignin incorporated nickel ferrite nanocomposites for mitigation of synthetic textile dye

  • 期刊论文

  • 发表日期：

    2025年9月24日

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  • Nidhi,
  • Ekta,
  • Paramdeep Kaur,
  • Kanika Thakur,
  • Ankush Sheoran,
  • Sonal Singhal

摘要

Herein, a photo-Fenton system is created via modification of nickel ferrite (NiFe) nanoparticles with carbonaceous lignin moiety to form NiFe-xC nanocomposites by hydrothermal route. The prepared nanocomposites exhibited visible light induced activation, as required for photocatalytic degradation activity. The NiFe-xC nanocomposites were successfully characterized via XRD, FTIR, VSM, FE-SEM, BET, DRS and PL analysis. The nanocomposites were evaluated for degradation of remazol brilliant yellow dye. Interestingly, the nanocomposites exhibited improved photo-Fenton catalytic efficiency than pure NiFe, with satisfactory magnetic properties for easy recoverability. The NiFe-0.5C nanocomposite exhibited best photo-Fenton performance with 95% degradation of dye under 90 min of light irradiation and followed pseudo-first-order rate kinetics with rate constant value of 35.9 × 10–3 min−1. The influence of pH, catalyst dosage, oxidant concentration, pollutant concentration and different scavengers were also explored. Radical quenching studies unveiled the participation of different radicals and H2O2 led photo-Fenton degradation mechanism was proposed. The practical utility of NiFe-xC nanocomposites was substantiated from recyclability and real sample analysis. As evidenced from PL studies, presence of lignin played role by declining charge carrier recombination rate during degradation reaction, thus allowing photoinduced charges to participate in catalytic process. These experimental findings revealed that the designed photo-Fenton system acts as promising material for treatment of dyes present in contaminated water.