UiO-66-NH2 and Zeolite-Templated Carbon Composites for the Degradation and Adsorption of Nerve Agents

Abstract

Composites of metal-organic frameworks and carbon materials have been suggested to be effective materials for the decomposition of chemical warfare agents. In this study, we synthesized UiO-66-NH2/zeolite-templated carbon (ZTC) composites for the adsorption and decomposition of the nerve agents sarin and soman. UiO-66-NH2/ZTC composites with good dispersion were prepared via a solvothermal method. Characterization studies showed that the composites had higher specific surface areas than pristine UiO-66-NH2, with broad pore size distributions centered at 1–2 nm. Owing to their porous nature, the UiO-66-NH2/ZTC composites could adsorb more water at 80% relative humidity. Among the UiO-66-NH2/ZTC composites, U0.8Z0.2 showed the best degradation performance. Characterization and gas adsorption studies revealed that beta-ZTC in U0.8Z0.2 provided additional adsorption and degradation sites for nerve agents. Among the investigated materials, including the pristine materials, U0.8Z0.2 also exhibited the best protection performance against the nerve agents. These results demonstrate that U0.8Z0.2 has the optimal composition for exploiting the degradation performance of pristine UiO-66-NH2 and the adsorption performance of pristine beta-ZTC.

Green, One-Step Mechanochemical Synthesis and Techno-economic Analysis of UiO-66-NH2

“…47,48 This material's application in CO 2 capture requires gas sorption measurements to verify the porosity of synthesized materials. 49,50 The S BET of the material synthesized in this work is comparable to other rapid syntheses, as Huelsenbeck et al 31 reported rapid aqueous syntheses of UiO-66 and UiO-66-NH 2 , which presented S BET of 339 and 717 m 2 g −1 , respectively, owing to defects that can form as a result of fast crystallization. In this work, gas sorption measurements revealed an S BET of 691 m 2 g −1 , a pore volume of 0.65 cm 3 g −1 , and a pore diameter of 3.7 nm.…”

“…The product presents a high volume and pore diameters compared to those found in other research. 49,50 Isotherms measured at 288, 298, and 308 K (Figure 2B) were used to find the isosteric enthalpy of adsorption which was calculated via the Clausius−Clapeyron equation, providing a value of ΔH ad = −30 ± 2 kJ mol −1 . This value implies the interaction with CO 2 was physisorption, consistent with reported values for conventionally synthesized UiO-66-NH 2 .…”

Fast Assembly of Metal Organic Framework UiO-66 in Acid-Base Tunable Deep Eutectic Solvent for the Acetalization of Benzaldehyde and Methanol

“…The aforementioned analysis shows that PTSA in acidic DES and ZrOCl 2 preliminarily forms Zr(IV) oxo organic acid framework. With the addition of mixed H 2 BDC linker and basic DES, the strong hydrogen bond effect between PTSA and MIm can accelerate the exchange of H 2 BDC and PTSA in Zr(IV) oxo organic acid framework [ 51 ]. This process has also been demonstrated by the acceleration of CH 3 COOH and HCOOH in ionic liquid for the formation of metal organic framework [ 27 , 50 , 51 ].…”

How Effective are Metal Nanotherapeutic Platforms Against Bacterial Infections? A Comprehensive Review of Literature

“… 27 With the development of technology and the increasing application of MOFs, their synthesis methods have become increasingly diversified. The existing synthetic methods include the hydrothermal method, 31 solvothermal method, 32 , 33 ionothermal synthesis, 34 , 35 ultrasonicated method, 36 spray drying synthesis, 37 , 38 and microwave-assisted hydrothermal synthesis. 39 , 40 Different synthesis techniques have various benefits and drawbacks.…”