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<p>Benzyl alcohol (BOL), an aromatic compound bearing oxygen-containing functional groups, is capable of forming BOL-based hyper-cross-linked resin (BOL-HCPs) with chloromethylated polystyrene resins (CMPs) via a sequence of chemical reactions. A combination of characterization techniques, including BET, FT-IR, SEM-Mapping, XPS, XRD, contact angle measurement, and TGA, was confirmed the successful preparation of the adsorbent. Notably, the incorporation of BOL significantly increases both the specific surface area (S<sub>BET</sub>) and hydrophilicity of the adsorbent. BOL-HCPs, prepared by Friedel–Crafts alkylation and nucleophilic substitution reaction, exhibited excellent phenol removal capacity from aqueous solutions. The Langmuir isotherm model better describes the resin’s equilibrium adsorption, showing a max capacity of 275.2&#xa0;mg/g at 298&#xa0;K. Kinetic analysis reveals that the adsorption of pollutants reaches equilibrium rapidly within 90&#xa0;min, which is consistent with the pseudo-first-order model. Owing to its favorable S<sub>BET</sub>, abundant micropores/mesopores, as well as hydrogen bonding interactions, the adsorbent enables highly efficient phenol adsorption. This work offers a new strategy for phenol removal from aqueous solutions.</p> Graphical Abstract <p></p>

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Synthesis and adsorption capability of benzyl alcohol-based hyper-cross-linked resins for phenol removal in aqueous solution

  • 期刊论文

  • 发表日期：

    2025年10月25日

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  • Sitong Wang,
  • Xiaoli Wu,
  • Wenkai Chen,
  • Yang Tan,
  • Gui Chen,
  • Fan Li,
  • Shiqi Zhou,
  • Meichun Wu

摘要

Benzyl alcohol (BOL), an aromatic compound bearing oxygen-containing functional groups, is capable of forming BOL-based hyper-cross-linked resin (BOL-HCPs) with chloromethylated polystyrene resins (CMPs) via a sequence of chemical reactions. A combination of characterization techniques, including BET, FT-IR, SEM-Mapping, XPS, XRD, contact angle measurement, and TGA, was confirmed the successful preparation of the adsorbent. Notably, the incorporation of BOL significantly increases both the specific surface area (SBET) and hydrophilicity of the adsorbent. BOL-HCPs, prepared by Friedel–Crafts alkylation and nucleophilic substitution reaction, exhibited excellent phenol removal capacity from aqueous solutions. The Langmuir isotherm model better describes the resin’s equilibrium adsorption, showing a max capacity of 275.2 mg/g at 298 K. Kinetic analysis reveals that the adsorption of pollutants reaches equilibrium rapidly within 90 min, which is consistent with the pseudo-first-order model. Owing to its favorable SBET, abundant micropores/mesopores, as well as hydrogen bonding interactions, the adsorbent enables highly efficient phenol adsorption. This work offers a new strategy for phenol removal from aqueous solutions.

Graphical Abstract