Daniel Hedbom, Philipp Gaiser, Tyran Günther, Ocean Cheung, Maria Strømme, Michelle Åhlén and Martin Sjödin
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引用次数: 0
Abstract
A series of zirconium-based MOFs with acclaimed stability was prepared and their ability to adsorb polyfluorinated pollutants was compared. A novel fluorinated UiO-67 analogue, named UiO-67-F2, was synthesised alongside three previously reported materials, namely UiO-67-NH2, UiO-68-(CF3)2, and UiO-67. The structures were established and confirmed by powder X-ray diffraction. UiO-67-NH2, UiO-68(CF3)2 and UiO-67-F2 were examined as sorbents for the perfluorinated gas, sulphur hexafluoride (SF6) from the gaseous phase. The SF6 uptake of UiO-67-NH2 and UiO-67-F2 at 100 kPa, 20 °C, was high (5.54 and 5.24 mmol g−1, respectively). Furthermore, UiO-67-F2 exhibited a remarkable PFOA uptake of 928 mgPFOA per gMOF in an aqueous solution, which far exceeded that of unmodified UiO-67 (872 mgPFOA per gMOF at 1000 mgPFOA per LWater). This study has identified strengths and potential applications of the novel UiO-67-F2, as well as the impact of fluorine functionalization. It also offers some insight into the structure–property relations of UiO-based MOFs for their use as low-pressure SF6 storage materials and PFAS sorbents intended for water purification under ambient conditions.
期刊介绍:
The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.