Optimization and Synthesis of a La-TMA MOF with Some Improvements in Its Properties

Abstract

A La-TMA metal−organic framework (MOF) made up of benzene-1,3,5-tricarboxylate and La(III) was synthesized by a different methodology compared to those in previous reports. By using various approaches, the structural characteristics and physical properties of the La-TMA MOF were analyzed. Eventually, the results showed micro-hexagonal hollow tubes with a high crystallinity grade and thermal stability (up to 400 °C) and a higher surface area compared with those from earlier reports. The BET surface area of a similar previous MOF was about 14.8 m 2 /g; however, in the current project, the BET surface area increased to about 34.49 m 2 /g and the Langmuir surface area to 42.3 m 2 /g.

Novel Core/Shell Nylon 6,6/La-TMA MOF Electrospun Nanocomposite Membrane and CO2 Capture Assessments of the Membrane and Pure La-TMA MOF

“…This fact was also confirmed by BET plot calculations with a mean pore diameter of 18.514 nm ( Table 4 ). Also, pure microtubes of La-TMA MOF show a type IV isotherm and H1 hysteresis 50 with uniform/narrow mesopores. 54 Nevertheless, a clear decrease in the mean pore diameter of the nanocomposite membrane is observed (from 41.532 to 18.514 nm).…”

“…The normal XRD pattern of microhexagonal hollow tubes of La-TMA MOF has been reported in the literature. The XRD pattern of La-TMA micro-MOF, according to the micro-sized and desirable crystallinity, was optimized . Furthermore, the Nylon 6,6/La-TMA MOF nanocomposite in the form of a thin film was studied throughout grazing incidence at θs = 5, 7, and 10°.…”

“…The XRD pattern of La-TMA micro-MOF, according to the micro-sized and desirable crystallinity, was optimized. 50 Furthermore, the Nylon 6,6/La-TMA MOF nanocomposite in the form of a thin film was studied throughout grazing incidence at θs = 5, 7, and 10°. It is noticeable that due to a decrease in the size of MOF particles (the micro-size changed into nano-size), microstrains instead of sharp peaks appear.…”

“…Therefore, changes in its chemical properties are not expected. The thermal stabilities of “Nylon 6,6” and “La-TMA MOF” are 424 °C 18 and about 400 °C, 50 respectively. Consequently, the thermal stability of the composite membrane is about 400 °C.…”

“…La-TMA MOF preparation was performed according to a previous study; 50 the method is described in detail here:…”