Cucurbituril‐verkapselnde metallorganische Gerüstverbindung über Mechanochemie: Adsorbentien mit verbesserter Leistung

Liang, Jun; Gvilava, Vasily; Jansen, Christian; Öztürk, Secil; Spieß, Alex; Lin, Jingxiang; Xing, Shanghua; Sun, Yangyang; Wang, Hao; Janiak, Christoph

doi:10.1002/ange.202100675

“…In this regard, we have synthesized and shaped an efficient ionic hybrid composite aerogel material (hereafter denoted as IPcomp‐6 (where “IP” stands for IISER Pune, and “comp” stands for composite)) with excellent anion‐exchange ability by encapsulating a cationic MOP [39] inside a hierarchically porous MOG, [40] utilizing the “bottle‐around‐ship” encapsulation strategy (Figure 1). [41] The strategic implantation of a multi‐functionalized trap (MOP) with a stable host (MOG) is demonstrated for efficient removal of oxoanions (Scheme 1). The deliberately grafted Cp 3 Zr 3 O‐(OH) 3 secondary building units (SBUs) of the MOP molecule result in high selectivity towards trapping various oxoanions, [42] whereas, the amine group along with freely exchangeable Cl − ions enhanced the anion‐exchange process [43, 44] .…”

Section: Introductionmentioning

confidence: 99%

Trap Inlaid Cationic Hybrid Composite Material for Efficient Segregation of Toxic Chemicals from Water

Fajal

¹

,

Mandal

²

,

Mollick

³

et al. 2022

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Metal-based oxoanions are potentially toxic pollutants that can cause serious water pollution. Therefore, the segregation of such species has recently received significant research attention. Even though several adsorbents have been employed for effective management of chemicals, their limited microporous nature along with non-monolithic applicability has thwarted their large-scale real-time application. Herein, we developed a unique anion exchangeable hybrid composite aerogel material (IPcomp-6), integrating a stable cationic metal-organic polyhedron with a hierarchically porous metal-organic gel. The composite scavenger demonstrated a highly selective and very fast segregation efficiency for various hazardous oxoanions such as, HAsO 4 2À , SeO 4 2À , ReO 4 À , CrO 4 2À , MnO 4 À , in water, in the presence of 100-fold excess of other coexisting anions. The material was able to selectively eliminate trace HAsO 4 2À even at low concentration to well below the As V limit in drinking water defined by WHO.

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“…The authors have cited additional references within the Supporting Information. [46][47][48][49][50][51][52][53][54]…”

Section: Supporting Informationmentioning

confidence: 99%

A Porphyrinic Metal‐Organic Framework with Cooperative Adsorption Domains for PFAS Removal from Water

Zhang,

Kong,

Wu

et al. 2024

ChemSusChem

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0

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The removal of toxic poly− and perfluoroalkyl substances (PFAS) as persistent pollutants from wastewater is imperative but challenging for water remediation. Many adsorbents including activated carbon, biochar, and clay minerals have been investigated for PFAS removal, but most of these materials are faced with high cost or/and low efficiency. The use of metal−organic frameworks (MOFs) as sorbents is attractive for efficient removal of PFAS due to their tailor‐made structures and high surface areas. Herein, we synthesized, characterized a water stable Zr−based porphyrinic MOF (PCN−224) with cooperative adsorption domains, and demonstrated its excellent capture performance toward perfluorooctane sulfonate (PFOS), perfluorohexane sulfonate (PFHxS) and perfluorobutane sulfonate (PFBS). PCN−224 has maximum uptake capacities of 963, 517, and 395 mg g−1 for PFOS, PFHxS, and PFBS, respectively, which are much higher than that of granular activated carbon. Moreover, coexistent anions (Cl−, SO42−) and humic acid have negligible effects on PFOS adsorption. The excellent adsorption performance of PCN−224 toward PFOS is due to the orthogonal cationic channel pores with a diameter of 1.9 nm, hydrophobic porphyrin units, and the Zr6 clusters with acidic sites. PCN−224 can be readily regenerated and reused. This work highlights the potential of MOFs with multiple adsorption domains for water remediation.

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Trap Inlaid Cationic Hybrid Composite Material for Efficient Segregation of Toxic Chemicals from Water

Fajal

¹

,

Mandal

²

,

Mollick

³

et al. 2022

View full text Add to dashboard Cite

Metal-based oxoanions are potentially toxic pollutants that can cause serious water pollution. Therefore, the segregation of such species has recently received significant research attention. Even though several adsorbents have been employed for effective management of chemicals, their limited microporous nature along with non-monolithic applicability has thwarted their large-scale real-time application. Herein, we developed a unique anion exchangeable hybrid composite aerogel material (IPcomp-6), integrating a stable cationic metal-organic polyhedron with a hierarchically porous metal-organic gel. The composite scavenger demonstrated a highly selective and very fast segregation efficiency for various hazardous oxoanions such as, HAsO 4 2À , SeO 4 2À , ReO 4 À , CrO 4 2À , MnO 4 À , in water, in the presence of 100-fold excess of other coexisting anions. The material was able to selectively eliminate trace HAsO 4 2À even at low concentration to well below the As V limit in drinking water defined by WHO.

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Cucurbituril‐verkapselnde metallorganische Gerüstverbindung über Mechanochemie: Adsorbentien mit verbesserter Leistung

Cited by 3 publications

References 76 publications

Trap Inlaid Cationic Hybrid Composite Material for Efficient Segregation of Toxic Chemicals from Water

Trap Inlaid Cationic Hybrid Composite Material for Efficient Segregation of Toxic Chemicals from Water

A Porphyrinic Metal‐Organic Framework with Cooperative Adsorption Domains for PFAS Removal from Water

Trap Inlaid Cationic Hybrid Composite Material for Efficient Segregation of Toxic Chemicals from Water

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