A new 3D Ag(i)-based high-energy metal organic frameworks (HE-MOFs): synthesis, crystal structure and explosive performance

Abstract

A new 3D HE-MOF, [Ag2(TABT)(NO3)2]n, where TABT represents 4,4′,5,5′-tetraamine-3,3′-bis-1,2,4-triazole, was synthesized by hydrothermal method, exhibiting high density, good thermostability, insensitivity and relative high detonation performance.

Nitrate anions embedded in rigid and cationic 3D energetic MOFs constructed by the chelating ligand towards insensitive energetic materials

“…Compound 1 has a positive D f H1 value higher than commercial 1,3,5-trinitro-1,3,5-triazinane (RDX, D f H1 = 92 kJ mol À1 ), 1,3,5,7,-tetranitro-1,3,5,7,-tetrazacyclo-octane (HMX, D f H1 = 116 kJ mol À1 ) and TNT (D f H1 = À26 kJ mol À1 ). 4,22,49 Moreover, in contrast with other reported EMOFs, such as Cu-ATRZ (D f H1 = 1651 kJ mol À1 ), 34,46 compound 1 has a more obvious advantage in D f H1. According to the method adopted by Pang, 52 we estimate that the DH det of 1 is 5.316 kJ g À1 , and the explosion heat value of 1 is much higher than that of Cu-ATRZ (DH det = 4.562 kJ g À1 ) and TNT (DH det = 3.720 kJ g À1 ).…”

“…into N-rich organic molecules. [20][21][22] However, these approaches always inevitably suffer from the high mechanical sensitivities of EMs because the sensitive groups cannot generally be well protected by the structure of organic molecule frameworks. [23][24][25][26] Energetic metal-organic frameworks (EMOFs) have garnered significant attention from researchers due to their abundant architectures, excellent heats of detonation, good thermal resistance, and notable mechanical robustness.…”

Facile Preparation of Nitrogen-Doped Carbon Spheres with Wrinkled Cage-Supported Single-Atom Copper Catalysts for Selective Oxidation of Glycerol to Formic Acid

“…The DFNS used as the hard template and the hydrothermal carbon-coated DFNS were prepared following the synthetic protocol in our previous work with minor modification. , After that, the hydrothermal carbon-coated DFNS (0.3 g) was mixed with 5,5′-diamino-3,3′-bis­(1H-1,2,4-triazole) (DABT, 0.9 g) and copper nitrate hydrate (0.09 g) in 10 mL of methanol, and after stirring for 30 mins, the mixture was wet ball-milled at 400 rpm for 2 h. Subsequently, the suspension was vacuum-evacuated, followed by pyrolysis in a tubular furnace under an Ar atmosphere at 600 °C for 3 h with a heating rate of 10 °C min –1 . Finally, the obtained product was immersed in 10 wt % HF solution for 24 h to remove DFNS, then collected by centrifugation, washed with copious amounts of DI water, and dried at 110 °C overnight.…”

“…32 In our previous work, we prepared N-doped carbon spheres with wrinkled cages (NCSWCs) based on the hydrothermal carbonization method using dendritic fibrous nanosilica (DFNS) as the hard template and 5,5′-diamino-3,3′-bis(1H-1,2,4-triazole) (DABT) as the nitrogen source, respectively. 33,34 The obtained NCSWCs possess colloid-like properties, such as excellent fluidity and dispersity, a high specific surface area, a large macro/mesopore volume, and a high N content, which are suited to be the supports for single-atom Cu catalysts. Herein, NCSWC-supported single-atom Cu catalysts (Cu/NCSWCs) were prepared by a facile wet ball milling method using DABT and copper nitrate as the nitrogen and copper sources based on the hydrothermal carbon-encapsulated DFNS as the hard template.…”

Polyiodo Azole-Based Metal–Organic Framework Energetic Biocidal Material for Synergetic Sterilization Applications

“…Metal–organic frameworks (MOFs) that are constructed by periodically joining metal ion/clusters with organic linkers have attracted extensive interest because of their structural tunability and diversity. − Metal–organic framework materials have been widely used in drug transportation, gas adsorption, molecular catalysis, energy storage, electronic sensors, and other fields in recent years − because of their prominent high crystalline and porosity, big specific surface areas, stable framework structures, and their own specificities. − The structural tunability and high porosity of MOFs hold great promise as biocidal materials. Pioneering work such as Co-MOF, Ag@CD-MOF, and BIT-66 − have shown bactericidal activity (Figure ).…”