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<p>Selective adsorption of anions from aqueous solutions is essential to many industrial and remediation applications. A novel anion sorbent was developed using hybrid glycoboehmite (GB) synthesized from 1,4-butanediol and potassium hydroxide mineralizer. GB materials were further functionalized through Ni<sup>2+</sup> adsorption from aqueous solutions. The adsorption capacity of GB for Ni<sup>2+</sup> was found to be 2 to 5 times greater than that for Mg<sup>2+</sup> or Ca<sup>2+</sup>, and 12 times higher than that of simple boehmite normalized to the surface area. Relative to GB, nickel-functionalized GB (Ni-GB) exhibits favorable adsorption properties for arsenate and iodide with much improved partitioning coefficient values (K<sub>D</sub>) of ~ 6400 and 43 mL/g respectively. Experimental characterization along with classical and ab initio molecular dynamics simulations offers insight into the ion adsorption mechanism.</p>

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Novel nickel-functionalized glycoboehmite materials for iodide and arsenate capture

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月13日

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  • Jessica N. Kruichak,
  • Nelson S. Bell,
  • Jeffery A. Greathouse,
  • Philippe F. Weck,
  • Mark A. Rodriguez,
  • Samantha G. Rosenberg,
  • Benjamin Juba,
  • Mila Nhu Lam,
  • Yifeng Wang,
  • Edward N. Matteo

摘要

Selective adsorption of anions from aqueous solutions is essential to many industrial and remediation applications. A novel anion sorbent was developed using hybrid glycoboehmite (GB) synthesized from 1,4-butanediol and potassium hydroxide mineralizer. GB materials were further functionalized through Ni2+ adsorption from aqueous solutions. The adsorption capacity of GB for Ni2+ was found to be 2 to 5 times greater than that for Mg2+ or Ca2+, and 12 times higher than that of simple boehmite normalized to the surface area. Relative to GB, nickel-functionalized GB (Ni-GB) exhibits favorable adsorption properties for arsenate and iodide with much improved partitioning coefficient values (KD) of ~ 6400 and 43 mL/g respectively. Experimental characterization along with classical and ab initio molecular dynamics simulations offers insight into the ion adsorption mechanism.