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@ARTICLE{VelazquezGarcia:638308,
      author       = {Velazquez Garcia, Jose and Frenzke, Susann and de los
                      Santos Valladares, Luis and Barnes, Crispin H. W. and
                      Copeman, Christopher and Singh, Jatinder and Kulkarni,
                      Satishkumar and Keller, Thomas F. and Sanchez Cornejo, Henry
                      and Huanaco, Dina and Anwary, Maryam and Elorche, Rachida
                      and Asprilla Herrera, Lina Maria and Lukaszczyk, Weronika
                      and Eroglu, Nuray and Eifler, Dirk and Techert, Simone},
      title        = {{S}ize {M}atters: {L}imitations of {ZIF}-8 {M}onolith and
                      {I}ts {N}i-, {C}o- and {C}u-{D}oped {V}ariants for
                      {A}dsorption of {R}hodamine {B}},
      journal      = {Materials advances},
      volume       = {6},
      number       = {21},
      issn         = {2633-5409},
      address      = {Cambridge},
      publisher    = {Royal Society of Chemistry},
      reportid     = {PUBDB-2025-04026},
      pages        = {7800 - 7811},
      year         = {2025},
      abstract     = {Despite numerous publications reporting the instability of
                      ZIF-8 in water, it is still used for water purification,
                      including the adsorption of molecules significantly larger
                      than the pore window. This work involves the synthesis,
                      characterisation and application of ZIF-8 monoliths,
                      including those doped with Ni, Co and Cu at levels of $4\%,$
                      $8\%$ and $12\%,$ for rhodamine B adsorption in water.
                      Characterisation techniques include optical microscopy,
                      PXRD, FTIR, SEM-EDX, TGA-FTIR and N2 adsorption. The results
                      reveal mm-cm sized monoliths with identical crystalline
                      structure and morphology, but different properties depending
                      on the doping metal and level. Except for $4\%$ of Co-doped
                      ZIF-8, doping generally narrows the pore size distribution
                      to micropores (maximum between 10.9–11.6 Å), whereas the
                      undoped monolith shows a combination of micropores and
                      mesopores (10.2–38 Å). Doping with more than $4\%$ Co2+
                      or Cu2+ results in higher BET surface areas (up to 1180 and
                      1100 m2·g-1, respectively) compared to the undoped monolith
                      (960 m2·g-1). However, when immersed in a 10 mg·L-1
                      rhodamine B solution, all monoliths exhibit both slower
                      adsorption kinetecs and reduced capacities (0.61 and 1.82
                      mg·g-1) than reported nano-/microsize particles. Desorption
                      of rhodamine B occurred between 9 and 24 hrs, attributed to
                      up to $20\%$ degradation of the monolith. Immersion in
                      Milli-Q water for five days led to a white residue on the
                      surface, with FTIR indicating a new phase. These results
                      suggest ZIF-8 and its variants are unsuitable for adsorbing
                      large molecules in water but are suitable for small
                      molecules like gases.},
      cin          = {FS-SCS / FS-NL},
      ddc          = {540},
      cid          = {I:(DE-H253)FS-SCS-20131031 / I:(DE-H253)FS-NL-20120731},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / SFB 1633 C06 - Sub-molekulare
                      Kontrolle über photoinduzierten PCET und PCEnT (C06#)
                      (564189651)},
      pid          = {G:(DE-HGF)POF4-632 / G:(GEPRIS)564189651},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101 /
                      EXP:(DE-H253)Nanolab-04-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1039/D5MA00797F},
      url          = {https://bib-pubdb1.desy.de/record/638308},
}