López-Olvera Alfredo, Zárate J Antonio, Martínez-Ahumada Eva, Fan Dong, Díaz-Ramírez Mariana L, Sáenz-Cavazos Paola A, Martis Vladimir, Williams Daryl R, Sánchez-González Elí, Maurin Guillaume, Ibarra Ilich A
Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior s/n, CU, Del Coyoacán, 04510 México D.F., Mexico.
ICGM, Univ. Montpellier, CNRS, ENSCM, 34095 Montpellier, France.
ACS Appl Mater Interfaces. 2021 Aug 25;13(33):39363-39370. doi: 10.1021/acsami.1c09944. Epub 2021 Aug 11.
Metal-organic frameworks MIL-53(Al)-TDC and MIL-53(Al)-BDC were explored in the SO adsorption process. MIL-53(Al)-TDC was shown to behave as a rigid-like material upon SO adsorption. On the other hand, MIL-53(Al)-BDC exhibits guest-induced flexibility of the framework with the presence of multiple steps in the SO adsorption isotherm that was related through molecular simulations to the existence of three different pore opening phases narrow pore, intermediate pore, and large pore. Both materials proved to be exceptional candidates for SO capture, even under wet conditions, with excellent SO adsorption, good cycling, chemical stability, and easy regeneration. Further, we propose MIL-53(Al)-TDC and MIL-53(A)-BDC of potential interest for SO sensing and SO storage/transportation, respectively.
研究了金属有机框架MIL-53(Al)-TDC和MIL-53(Al)-BDC在SO吸附过程中的性能。结果表明，MIL-53(Al)-TDC在吸附SO时表现为类似刚性的材料。另一方面，MIL-53(Al)-BDC在SO吸附等温线上呈现多个步骤，表明框架具有客体诱导的灵活性，通过分子模拟发现这与三种不同的孔开放相（窄孔、中孔和大孔）的存在有关。即使在潮湿条件下，这两种材料也被证明是捕获SO的优异候选材料，具有出色的SO吸附性能、良好的循环性能、化学稳定性和易于再生的特点。此外，我们分别提出MIL-53(Al)-TDC和MIL-53(A)-BDC在SO传感以及SO存储/运输方面具有潜在应用价值。
