A significant enhancement of water vapour uptake at low pressure by amine-functionalization of UiO-67

Abstract

The functionalization of UiO-67 with -NH2 groups enhances CO2 and CH4 adsorption at 1 bar and 298 K and positively influences the framework's interaction with water as evidenced by the significant enhancement of water vapour adsorption at 0.1 < P/P0 < 0.3 and 298 K.

Synthesis and post-synthetic modification of amine-, alkyne-, azide- and nitro-functionalized metal–organic frameworks based on DUT-5

“…Similar observations have recently been reported for the NMR spectra of amine-functionalized UiO-67, which features 2,2´-diaminobiphenyl-4,4´-dicarboxylate linkers. 34 Nonetheless, the signals can qualitatively be assigned to the functionalized and unfunctionalized molecules, therefore again proving the presence of both linker molecules. Since ATR-IR spectra, N 2 physisorption measurements, TG analyses and NMR spectra all strongly suggest the successful incorporation of the functionalized linker molecules, we claim that the synthesis of amine-and alkyne-functionalized metal-organic frameworks based on the structure of DUT-5 and mixed-linker MOFs with a combination of modified and non-functionalized linker molecules was successful.…”

Allenylphosphine Oxides as Starting Materials for the Synthesis of Conjugated Enynes: Boosting the Catalytic Performance by MOF Encapsulated Palladium Nanoparticles

“…The specific octahedral and tetrahedral shapes of the crystals are also visible, suggesting the maintenance of MOF morphology during the encapsulation of Pd nanoparticles. [20] Without the confinement and protection of MOF structure, the nanoparticles are easily lost or aggregated and unevenly distributed on the support with a much lower Pd content compared to UiO-66 and UiO-67, as reflected form the ICP data. As for UiO-68, the MOF structure seems to be collapsed giving only irregular fragments in TEM images (see SI for details), which is probably due to its relative sensitivity to moisture of UiO-68 with a larger pore size.…”

Incorporation of Functional Groups Expands the Applications of UiO‐67 for Adsorption, Catalysis and Thiols Detection

“…However, in the report of Mondloch et al., the framework collapse of UiO‐67 could be overcome. Concretely, UiO‐67 was stable towards linker hydrolysis in the liquid H 2 O, but collapse during the activation from H 2 O due to the capillary forces . Taking these into consideration, they tried to address the issues related to activation to synthesized permanently porous UiO‐67.…”

“…UiO‐67 with ultra‐high porosity also showed a good performance on CH 4 and CO 2 adsorption. As shown in Figure , the CH 4 and CO 2 adsorption measurements were conducted at 1 bar and 254(red), 273(blue), and 298 K(black), respectively . And the predicted CH 4 and CO 2 adsorption capacities of UiO‐67 and other MOFs, activated carbons and zeolites were summarized in Table .…”