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@ARTICLE{Chen:911324,
      author       = {Chen, Hui and Liu, Wanlu and Cheng, Long and Meledina,
                      Maria and Meledin, Alexander and Van Deun, Rik and Leus,
                      Karen and Van Der Voort, Pascal},
      title        = {{A}midoxime-functionalized covalent organic framework as
                      simultaneous luminescent sensor and adsorbent for organic
                      arsenic from water},
      journal      = {The chemical engineering journal},
      volume       = {429},
      issn         = {1385-8947},
      address      = {Amsterdam},
      publisher    = {Elsevier},
      reportid     = {FZJ-2022-04616},
      pages        = {132162 -},
      year         = {2022},
      abstract     = {Organoarsenic compounds are widely used as feed additives
                      in the poultry industry. However, the release of
                      organoarsenic-containing wastewater can cause serious
                      poisoning to the ecosystem. For this reason, detection and
                      adsorption of organic arsenic from wastewater is crucial but
                      also very challenging. Here, the use of covalent organic
                      frameworks (COFs) as fluorescence sensors and adsorbents for
                      the detection and adsorption of organic arsenic from water
                      has been investigated for the first time. Two isoreticular
                      crystalline and highly porous sp2 carbon-conjugated COFs
                      were synthesized, and amidoxime-functionalized via
                      post-synthetic modification (PSM). The long-range order and
                      π-conjugated system ensure that both COFs act as
                      fluorescent sensors for detecting the representative organic
                      arsenic, roxarsone (ROX). The fluorescence quenching
                      efficiencies of ROX on both COFs are over $98\%.$ The limits
                      of detection (LOD) for ROX by both COFs are estimated to be
                      6.5 and 12.3 nM. Additionally, the regular pores and the
                      abundantly decorated amidoxime moiety exhibit extraordinary
                      accessibility, which facilitates the adsorption of ROX. High
                      adsorption capacities were obtained for both materials which
                      amounts are up to 732 and 787 mg g−1. After five times
                      of recycling, a negligible decrease in the adsorption
                      capacity was noted, which reveals the excellent regeneration
                      ability of those two amidoxime-functionalized COFs. These
                      results indicate that the state-of-the-art sp2
                      carbon-conjugated amidoxime-functionalized COFs exhibit a
                      high potential for the practical detection and adsorption of
                      organoarsenic compounds from wastewater.},
      cin          = {ER-C-2},
      cid          = {I:(DE-Juel1)ER-C-2-20170209},
      pnm          = {5353 - Understanding the Structural and Functional Behavior
                      of Solid State Systems (POF4-535)},
      pid          = {G:(DE-HGF)POF4-5353},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000724705800005},
      doi          = {10.1016/j.cej.2021.132162},
      url          = {https://juser.fz-juelich.de/record/911324},
}