Synthesis of Cu-BTC Metal-Organic Framework for CO2 Capture via Solvent-free Method: Effect of Metal Precursor and Molar Ratio

Abstract

The Cu-BTC (Copper -1,3,5-benzene tricarboxylate) is one of the representative metal organic frameworks (MOFs) that has shown outstanding performance for carbon dioxide (CO2) adsorption. However, its conventional synthesis duration is relatively long, and the process requires the addition of bulk amounts of organic solvents. Herein, an enhanced solvent-free synthesis strategy was demonstrated in this work for the Cu-BTC synthesis. For this enhanced method, Cu-BTC was synthesized in 3 hours by mechanically grinding the mixture of copper (Cu) metal precursor and BTC organic linker without using solvent. The as-synthesized Cu-BTC samples were analyzed using various characterization techniques to examine and confirm their properties. The thermal stability result revealed that the self-synthesized Cu-BTC could sustain high temperature up to 290 ℃. Among the samples synthesized at different mole ratios, the Cu-BTC sample with the Cu to BTC mole ratio of 1.5:1 showed the highest BET surface area and the most significant pore volume of 1044 m 2 g -1 and 0.62 cm 3 g -1 , respectively. Its CO2 adsorption capacity was comparable with those fabricated using the solvent-based method, i.e., 1.7 mmol g -1 at 30 ℃ and 1 bar. The results also showed that the synthesized Cu-BTC exhibited regenerative ability up to five adsorption-desorption cycles.

Bimetallic metal–organic framework: an efficient electrocatalyst for bromine-based flow batteries

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Rapid Aqueous Medium Organization of Trimesate Metal–Organic Frameworks of Cu, Fe: Exploring Suitability in Gas Separation

“…The color change can be accounted for by removing the coordinated solvent or water molecules in copper sites with a concomitant reduction in the coordination number of the copper ion from six to four. After exposure to a humid atmosphere, the dark blue powder immediately turns to light blue …”

“…After exposure to a humid atmosphere, the dark blue powder immediately turns to light blue. 21 Powder X-ray diffraction (PXRD) analysis of samples was conducted using a Bruker D8 ADVANCE diffractometer using CuKα (λ = 1.54056 Å) radiation at room temperature in an angular range of 2−80°(2θ) with a scan rate of 2°min −1 . A Thermo Nicolet 8700 spectrometer was used to measure the Fourier transform infrared (FTIR) spectra of the samples as KBr pellets.…”

Impact of copper and cobalt-based metal-organic framework materials on the performance and stability of hole-transfer layer (HTL)-free perovskite solar cells and carbon-based

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