Article, 2024

Size-selective trapping and photocatalytic degradation of PFOA in Fe-modified zeolite frameworks

Applied Catalysis B Environmental, ISSN 1873-3883, 0926-3373, Volume 349, Page 123885, 10.1016/j.apcatb.2024.123885

Contributors

Juve, Jan-Max Arana 0000-0002-4789-9098 [1] [2] González, Xavier Baami [1] [3] Bai, Lu 0000-0002-0436-5694 [1] Xie, Zhiqun [1] Shang, Ya-Nan [1] [4] Saad, Ali 0000-0002-4528-8349 [1] Gonzalez-Olmos, Rafael 0000-0003-2646-9141 [3] Wong, Michael S 0000-0002-3652-3378 [2] Ateia, Mohamed I 0000-0002-3524-5513 [2] Wei, Zong-Su 0000-0001-8747-2251 (Corresponding author) [1]

Affiliations

  1. [1] Aarhus University
    2. [NORA names: AU Aarhus University; University; Denmark; Europe, EU; Nordic; OECD];
  2. [2] Rice University
    3. [NORA names: United States; America, North; OECD];
  3. [3] Ramon Llull University
    4. [NORA names: Spain; Europe, EU; OECD];
  4. [4] Shandong University of Science and Technology
    5. [NORA names: China; Asia, East]

Abstract

Removal and destruction of perfluorooctanoic acid (PFOA) are challenging due to its extreme persistence and dilute concentrations. This study investigated dual-function adsorptive-photocatalytic zeolite materials to selectively adsorb and degrade PFOA via tuning pore structures and doping transition metals. It is found that the pore opening is critical in the size-selective trapping of PFOA, while the iron doped zeolites present excellent adsorption of PFOA (>80 mg g−1) combining hydrophobic and electrostatic interactions. The formation of PFOA-iron complexes has reduced bond dissociation energy of C−F, calculated from density functional theory, for favorable stepwise defluorination (over 60% defluorination in 4 hours) by superoxide radicals and ligand-to-metal charge transfer. This mechanistic investigation extends the potential of the concentrate-and-degrade concept to remove PFOA selectively and effectively from contaminated water.

Keywords

C-F, acid, adsorption of perfluorooctanoic acid, bond dissociation energies, charge transfer, complex, concentration, concept, contaminated water, degradation of perfluorooctanoic acid, degrade perfluorooctanoic acid, density, density functional theory, destruction, destruction of perfluorooctanoic acid, dilute concentrations, dissociation energies, doped zeolites, doping, doping transition metals, electrostatic interactions, energy, excellent adsorption, formation, framework, functional theory, interaction, investigation, iron, ligand-to-metal charge transfer, materials, metal, opening, perfluorooctanoic acid, persistence, photocatalytic degradation, photocatalytic degradation of perfluorooctanoic acid, pore, pore opening, pore structure, potential, radicals, removal, removal perfluorooctanoic acid, size-selective trapping, structure, study, superoxide, superoxide radicals, theory, transfer, transition metals, traps, water, zeolite, zeolite framework, zeolite materials

Funders

  • Danish Agency for Science and Higher Education
  • Novo Nordisk Foundation

Data Provider: Digital Science

LINKS
-

Matching Records in NORA

SUBJECTS
+

METRICS
+