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<p>Herein, we reported one-pot synthesis of graphene oxide (GO) supported nanoscale zero-valent nickel (NZVN), used as–synthesized GO@NZVN for capture of uranyl ions. Structural characterization established aggregation of NZVN was diminished by immobilization onto GO, contributing to improved reactivity of GO@NZVN which enable superior removal performance towards U(VI) in comparison with NZVN. The D–R model provided the best description of isotherm data of U(VI) adsorption onto GO@NZVN. The pseudo–second order model contributed to a better description of adsorption kinetics for U(VI) capture. Thermodynamic analysis revealed endothermic and spontaneous adsorption of U(VI) onto the GO@NZVN adsorbents. XPS analyses allude that U(VI) adsorption onto composite surfaces followed by reduction into U(IV) were the central mechanism. Results of this contribution unveiled that GO@NZVN exhibited potential applicability in remediating heavy metal pollutants.</p>

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One-pot synthesis of graphene oxide supported nanoscale zero-valent nickel as a novel nanotrap toward highly efficient uranyl capture

  • 期刊论文

  • 发表日期：

    2026年3月23日

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  • Shaoming Zhu,
  • Weijiang Wang,
  • Yuxin Ding,
  • Changjun Zhang,
  • Yuanyuan Xie

摘要

Herein, we reported one-pot synthesis of graphene oxide (GO) supported nanoscale zero-valent nickel (NZVN), used as–synthesized GO@NZVN for capture of uranyl ions. Structural characterization established aggregation of NZVN was diminished by immobilization onto GO, contributing to improved reactivity of GO@NZVN which enable superior removal performance towards U(VI) in comparison with NZVN. The D–R model provided the best description of isotherm data of U(VI) adsorption onto GO@NZVN. The pseudo–second order model contributed to a better description of adsorption kinetics for U(VI) capture. Thermodynamic analysis revealed endothermic and spontaneous adsorption of U(VI) onto the GO@NZVN adsorbents. XPS analyses allude that U(VI) adsorption onto composite surfaces followed by reduction into U(IV) were the central mechanism. Results of this contribution unveiled that GO@NZVN exhibited potential applicability in remediating heavy metal pollutants.