Facile Synthesis of Metal–Organic Layers with High Catalytic Performance toward Detoxification of a Chemical Warfare Agent Simulant

Abstract

Two-dimensional (2D) metal−organic layer (MOL) materials are highly desired against chemical warfare agents (CWAs). However, the rapid synthesis of 2DMOLs with open metal sites in a single step is very challenging. Herein, a facile bottom-up method for synthesizing MOLs with microwave assistance is applied to produce Zr/Hf-BTB MOLs, composed of six-connected M 6 O 4 (OH) 412+ and the tritopic carboxylate ligand 1,3,5-tris(4-carboxyphenyl)benzene (BTB). The synthesis and ligand exchange steps can be combined into a single step to yield MOLs with active open sites directly. The as-synthesized MOLs demonstrate excellent catalytic performance toward the degradation of a CWA simulant. The theoretical calculations confirm that the high catalytic activity is due to the formate groups coordinated to the metal nodes being replaced by hydroxyl groups. The present work not only develops a method for the fast synthesis of 2D MOLs with active open metal sites in a single step but also provides a first demonstration for the application of 2D metal coordination materials in CWA protection.

Ultrafast Degradation and High Adsorption Capability of a Sulfur Mustard Simulant under Ambient Conditions Using Granular UiO-66-NH2 Metal–Organic Gels

“…Concentrated hydrochloric acid (HCl, 37%) possesses functions of both modulation and activation. , We adopt HCl as both a modulator and an activator to synthesize a series of defected granular Zr-MOG-X xerogels by adjusting the amount of HCl. As shown in the insets of Figure , as HCl increases, the color of macroscopic monolithic Zr-MOG-X (∼ a few millimeters) changes from brown to light yellow.…”

Terbium-modified two-dimensional zirconium-based metal–organic frameworks for photoluminescence detection of nitrite

“…S4, † the flower-shape morphology constructed with ultrathin 2D layers can be observed in the images of all the five materials, indicating that there is no morphological change after both the removal of benzoate and the installation of terbium at various temperatures; this morphology is also consistent with that of ZrBTB reported previously. 56 Representative HR-TEM images of Tb-ZrBTB-120 are shown in Fig. 3(a and b).…”

Cooperative Catalysis between Dual Copper Centers in a Metal–Organic Framework for Efficient Detoxification of Chemical Warfare Agent Simulants

“…Recent works have noted that the introduction of a second metal could efficiently improve the hydrolytic activity of nerve agents. ,,,,, Thus, we treated activated ZZU-282 with MCl 2 (M = Co, Ni, and Zn) in DMF to prepare three heterometallic ZZU-282-M samples (Figure a). Characterization of the obtained heterometallic ZZU-282 showed that the crystallinity and porosity remained unaltered (Figures S25 and S26).…”