From fundamentals to applications: a toolbox for robust and multifunctional MOF materials

Kirchon, Angelo; Feng, Liang; Drake, Hannah F.; Joseph, Elizabeth

doi:10.1039/c8cs00688a

Cited by 1,158 publications

(626 citation statements)

References 284 publications

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“…[27][28][29] The maximum acceptable concentrations were set as 40 and 50 ppb, respectively, by the World Health Organization (WHO) and the United States Environmental Protection Agency (USEPA). As indicated by Figure 5a, the adsorb amounts of SeO 3 2− in the MOF absorbent increase as the initial concentrations of SeO 3 2− increase. To reach adsorption equilibrium, 10 mg PCN-903-(CH 3 ) 6 was immersed in the aqueous solutions for 24 h, which was followed by inductively coupled plasma mass spectrometry (ICP-MS) analysis of supernatant fraction to determine the remaining SeO 3 2− concentration.…”

mentioning

confidence: 79%

“…As indicated by Figure 5a, the adsorb amounts of SeO 3 2− in the MOF absorbent increase as the initial concentrations of SeO 3 2− increase. Remarkably, PCN-903-(CH 3 ) 6 exhibits rapid removal, >90% of SeO 3 2− within 7 min, >99% removal within 1 h and complete removal, >99.9%, of SeO 3 2− within 3 h. The excellent selenite removal efficiency places PCN-903-(CH 3 ) 6 as a promising porous absorbent for detoxification. [30,31] The kinetic behavior for SeO 3 2− was subsequently investigated (Figure 5b and Table S5, Supporting Information).…”

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confidence: 79%

“…Adsorption Isotherm Measurement: PCN-903-(CH 3 ) 6 (10 mg) was mixed with a 10 mL stock solution of selenite (SeO 3 2− ) with various concentrations. The mixture was kept at room temperature for 24 h to ensure complete adsorption.…”

Section: Methodsmentioning

confidence: 99%

“…Although trace amounts of selenium are vital for nutritional needs of animals, it becomes extremely toxic at high concentrations (>400 µg d −1 ). To reach adsorption equilibrium, 10 mg PCN-903-(CH 3 ) 6 was immersed in the aqueous solutions for 24 h, which was followed by inductively coupled plasma mass spectrometry (ICP-MS) analysis of supernatant fraction to determine the remaining SeO 3 2− concentration. [30] The uptake ability of PCN-903-(CH 3 ) 6 toward toxic SeO 3 2− was first tested via a series of SeO 3 2− aqueous solution from 10 to 500 ppm.…”

mentioning

confidence: 99%

“…To reach adsorption equilibrium, 10 mg PCN-903-(CH 3 ) 6 was immersed in the aqueous solutions for 24 h, which was followed by inductively coupled plasma mass spectrometry (ICP-MS) analysis of supernatant fraction to determine the remaining SeO 3 2− concentration. [30,31] The kinetic behavior for SeO 3 2− was subsequently investigated (Figure 5b and Table S5, Supporting Information). The maximum Se capacity of PCN-903-(CH 3 ) 6 was calculated as 75.5 mg g −1 , which exhibits one of the highest adsorption capacities among MOF absorbents (Figure 5a and Table S4, Supporting Information).…”

mentioning

confidence: 99%

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Uncovering Structural Opportunities for Zirconium Metal–Organic Frameworks via Linker Desymmetrization

et al. 2019

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The discovery of metal–organic frameworks (MOFs) mimicking inorganic minerals with intricate topologies requires elaborate linker design guidelines. Herein, the concept of linker desymmetrization into the design of tetratopic linker based Zr‐MOFs is applied. A series of bent tetratopic linkers with various substituents are utilized to construct Zr‐MOFs with distinct cluster connectivities and topologies. For example, the assembly between a bent linker L‐SO2 with C2v symmetry and an 8‐connected Zr6 cluster leads to the formation of an scu topology, while another flu topology can be obtained by the combination of a novel 8‐connected Zr6 cluster and a bent linker L‐O with C1 symmetry. Further utilization of restricted bent linker [(L‐(CH3)6)] gives rise to a fascinating (4, 6)‐c cor net, originated from the corundum lattice, with an unprecedented 6‐c Zr6 cluster. In addition, the removal of toxic selenite ions in aqueous solution is performed by PCN‐903‐(CH3)6 which exhibits rapid and efficient detoxification. This work uncovers new structural opportunities for Zr‐MOFs via linker desymmetrization and provides novel design strategies for the discovery of sophisticated topologies for practical applications.

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