Mixed hierarchical local structure in a disordered metal–organic framework

Sapnik, Adam; Bechis, Irene; Collins, Sean M.; Johnstone, Duncan N.; Divitini, Giorgio; Smith, Andrew J.; Chater, Philip A.; Addicoat, Matthew A.; Johnson, Timothy J.; Keen, David A.; Jelfs, Kim E.; Bennett, Thomas D.

doi:10.1038/s41467-021-22218-9

Cited by 52 publications

(74 citation statements)

References 66 publications

(66 reference statements)

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“…Fe-BTC was synthesised following the procedure in Ref. 29. Both iron (III) nitrate nonahydrate (2.599 g) and 1,3,5benzentricarboxylic acid (1.177 g) were dissolved in methanol (20 mL each).…”

Section: Fe-btcmentioning

confidence: 99%

“…28 More recent investigations, using the harsher drying conditions employed in this study, gave rise to powdered Fe-BTC samples that were essentially non-porous to nitrogen at 77 K, yet still retained the same local structure as MIL-100. 29 Basolite® F300, whose exact synthetic route remains undisclosed, has a BET surface area in the range 1,300 to 1,600 m 2 g −1 as reported by the manufacturers. Independent experimental measurements have reported the BET surface area to be around 685 to 840 m 2 g −1 , with a total pore volume of 0.29 cm 3 g −1 and pore size of 2.2 nm.…”

Section: Introductionmentioning

confidence: 95%

“…1e]. 28,29 X-ray absorption near edge structure analysis of Fe-BTC revealed the presence of octahedrally coordinated Fe(III) ions at ambient temperature. 30 Furthermore, analysis of the extended X-ray absorption fine structure region revealed Fe-BTC possessed the same trimer unit structure present in MIL-100.…”

Section: Introductionmentioning

confidence: 99%

“…Synchrotron X-ray pair distribution function analysis revealed the presence of mixed hierarchical local structure within Fe-BTC, confirming the trimer unit's existence and the presence of tetrahedral assemblies as observed in MIL-100. 29 This was used to produce the first atomic-scale model of Fe-BTC.…”

Section: Introductionmentioning

confidence: 99%

“…31,34 Computational modelling has suggested that the degree of tetrahedral assembly in Fe-BTC materials influences the porosity, with accessible surface area increasing with the proportion of tetrahedral assemblies. 29 One atomic-scale model of Fe-BTC, for example, contained appreciable internal porosity while remaining non-porous to a nitrogen-sized probe. This model demonstrated the successful percolation of a 3.19 Å diameter spherical probe through the structure and revealed a maximum spherical cavity size of 9.15 Å.…”

Section: Introductionmentioning

confidence: 99%

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Gas Adsorption Selectivity in Topologically Disordered Metal–Organic Frameworks

Sapnik

Cw²,

Lk³

et al. 2021

Preprint

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<div>Disordered metal–organic frameworks are emerging as an attractive class of functional materials, however their applications in gas storage and separation have yet to be fully explored. Here, we investigate gas adsorption in the topologically disordered Fe-BTC framework and its crystalline counterpart, MIL‑100. Despite their similar chemistry and local structure, they exhibit very different sorption behaviour towards a range of industrial gases, noble gases and hydrocarbons. Virial analysis reveals that Fe-BTC has enhanced interaction strength with guest molecules compared to MIL‑100. Most notably, we observe striking discrimination between the adsorption of C3H6 and C3H8 in Fe‑BTC, with over a twofold increase in the amount of C3H6 being adsorbed than C3H8. Thermodynamic selectivity towards a range of industrially relevant binary mixtures is probed using ideal adsorbed solution theory (IAST). Together, this suggests the disordered material may possess powerful separation capabilities that are rare even amongst crystalline frameworks.</div>

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Section: Fe-btcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Gas Adsorption Selectivity in Topologically Disordered Metal–Organic Frameworks

Sapnik

Cw²,

Lk³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

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Assessing Early Atherosclerosis by Detecting and Imaging of Hypochlorous Acid and Phosphorylation Using Fluorescence Nanoprobe

Lu,

Li,

et al. 2023

Advanced Materials

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The assessment of early atherosclerosis (AS) is of great significance for the early diagnosis and mechanism research. Herein, a novel nanoprobe PCN@FL is developed to realize the simultaneous detection and imaging of phosphorylation and hypochlorous acid (HClO). The selective recognition of HClO is achieved through the specific interaction between DMTC and HClO, while the levels of phosphorylation are detected via the specific interaction between Zr (IV) and phosphates. The nanoprobe can be utilized to monitor the fluctuations in HClO and phosphate in early atherosclerosis. It is observed that the levels of HClO and phosphate in the serum of early AS mice are higher than those of the normal mice. Ultimately, the levels of hypochlorous acid and phosphorylation in the inner wall of aortic vessels are imaged by two‐photon microscope. The results show that the levels of HClO and phosphorylation in the early atherosclerotic mice are significantly higher than those of in normal mice. The nanoprobe provides a suitable fluorescent tool for simultaneous detection and imaging of HClO and phosphorylation, which holds promise for early atherosclerotic disease assessment.

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Trace to the Source: Self‐Tuning of MOF Photocatalysts

Zhou

Zhang

Xiao

et al. 2023

Advanced Energy Materials

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Benefitting from ultra‐high porosity, large specific surface area (SSA), and rich active sites, metal–organic frameworks (MOFs) have emerged as a star material in energy and environment related applications, especially in photocatalysis. In comparison with conventional photocatalysts, MOFs can be customized in terms of electronic structure, photo‐responsiveness, and morphological dimensions by rational design, which means that MOFs eliminate the need for other species to achieve enhanced photocatalytic performance, such as metals, compounds, and polymers, which may introduce extra costs, be time‐consuming, be multi‐phase, or have an unclear mechanism. Most previous review works related to MOF photocatalysis have mixed self‐tuning and assisted‐tuning, which often gives an incomplete understanding. In this work, the self‐tunning of MOFs by analyzing component (as clusters, ligands, and inclusions), defect (defect engineering, as linkers, clusters, and oxygen vacancies (OVs), and crystal (as facets, dimensions, and amorphization) is summarized. Then, outstanding examples of these strategies applied to water redox, CO2/N2 reduction, organic conversion, and environmental treatment are discussed. Finally, the opportunities and challenges faced in the self‐tuning of MOFs are analyzed from different perspectives. This paper is a comprehensive and systematic review on the self‐tuning of MOFs to enhance photocatalytic activity.

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Mixed hierarchical local structure in a disordered metal–organic framework

Cited by 52 publications

References 66 publications

Gas Adsorption Selectivity in Topologically Disordered Metal–Organic Frameworks

Gas Adsorption Selectivity in Topologically Disordered Metal–Organic Frameworks

Assessing Early Atherosclerosis by Detecting and Imaging of Hypochlorous Acid and Phosphorylation Using Fluorescence Nanoprobe

Trace to the Source: Self‐Tuning of MOF Photocatalysts

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