Efficient activation of persulfate by a novel lignin hydrogel supported Fe/Cu nanoparticles for bisphenol A degradation
Year: 2025
Type: article
Abstract: In this work, a novel lignin hydrogel-supported Fe/Cu nanocomposite (LH-Fe/Cu) was synthesized for the degradation of bisphenol A (BPA) in aqueous solution through persulfate (PS) activation, namely the LH-Fe/Cu-Ps system. The detailed property data demonstrated that the unique three-dimensional (3D) structure of the lignin hydrogel facilitates the dispersion of magnetic nanoparticles (Fe/Cu particles), thereby enhancing the maximum exposure of Fe/Cu particles. The three-dimensional architecture of lignin hydrogel enhances the availability of attachment sites for Fe/Cu, PS, and BPA, facilitating efficient electron transfer between Fe/Cu and PS, thereby promoting the degradation of BPA. The degradation rate of BPA in the LH-Fe/Cu-PS system reached 98.58 % within 6 min with 0.06 g/L catalyst and 0.8 mM PS. The effects of humic acid (HA) and inorganic anion on the degradation process were also studied. The quenching experiment demonstrated that the LH-Fe/Cu-PS system predominantly generates active free radicals , namely SO 4 .- , . OH, and O 2 .- , with SO 4 .- being the primary species. The degradation mechanism and pathway of BPA were predicted through density functional theory (DFT) calculations and intermediate analysis. The LH-Fe/Cu-PS system exhibits remarkable efficacy in the degradation of water pollutants and holds significant potential for application in the treatment of organic wastewater.
Source: Solid State Sciences
Authors: Yuanyuan Zhao, Wanling Wu, Jing Huang, Xudong Fan, Chaonan Xu, Donglin Zhao
Institution: Anhui Jianzhu University
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,070
Award: G3102822939
OpenAlex ID: W4409622666