Ultrasound assisted synthesis of {[Cu2(BDC)2(dabco)].2DMF.2H2O} nanostructures in the presence of modulator; new precursor to prepare nano copper oxides

Abstract

As a new precursor to prepare nano copper oxide, nanostructures of porous metal organic framework (MOF) {[Cu2(BDC)2(dabco)].2DMF.2H2O} (1) have been synthesized in the presence of acetic acid as a modulator via sonochemical method. Different concentrations of metal ion, organic linkers, modulator reagent and also different sonication times were held to improve the quality of nanostructures. Ultrasound irradiation helps nucleation step of the oriented attachment of modulation method and nanoparticles with a few nanorods has been prepared. As prepared MOF was calcinated at 500 °C to prepare nano CuO and Cu2O. Compound 1, CuO and Cu2O nanostructures were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray powder diffraction (XRD).

Effect of the structural constituents of metal organic frameworks on carbon dioxide capture

“…Another MOF {[Cu 2 (BDC) 2 (dabco)] 2DMF 2H 2 O was obtained by varying reactant concentrations and sonication times in the presence of acetic acid as a modulator [54]. It was found that when reactants are sonicated for about 90 minutes, it led to larger particles without agglomeration.…”

“…Various concentrations of modulator were also used during synthesis to reduce interactions between metal ions and organic ligands, therefore potentially providing control over the crystal growth. For example, at higher concentration of modulator one-dimensional growth was observed resulting in nanorods [54].…”

Synthesis of Cu‐BTC Metal‐Organic Framework by Ultrasonic Wave‐Assisted Ball Milling with Enhanced Congo Red Removal Property

“…Acetic acid has the same chemical functionality as the organic linkers, so it can alter the equilibrium between the organic linkers and metal ions and inhibit the coordination interaction between them, thus controlling the synthesis of Cu‐BTC. Modulator reagent has a regulatory effect on the rate of crystal growth and framework extension, which has effects on the morphology and size of samples . Reaction conditions and results from synthesized Cu‐BTC were listed in Table .…”

Preparation of 5‐Substituted‐1H‐Tetrazoles Catalyzed by MOFs via Two Strategies: Direct Condensation of Aryl Nitriles with Sodium Azide, and Tri‐Component Reaction Method

“…al. (499 m 2 /g) . The mesoporousity of the catalyst was demonstrated by N 2 adsorption–desorption diagrams and hysteric loop from BJH desorption dV/dlog(D) pore volume diagram shown in Figure .…”