Superior Performance of Copper Based MOF and Aminated Graphite Oxide Composites as CO₂ Adsorbents at Room Temperature

Abstract

New composites Cu-BTC MOF and graphite oxide modified with urea (GO-U) are developed and tested as CO2 adsorbents at room temperature. The composite containing GO-U with the highest nitrogen content exhibits an excellent CO2 uptake (4.23 mmol/g) at dynamic conditions. The incorporation of GO-U into MOF changes the chemistry and microstructure of the parent MOF and results in synergistic features beneficial for CO2 retention on the surface. To identify these features the initial and exhausted materials were extensively characterized from the points of view of their porosity and chemistry. Although the adsorption forces are relatively strong, the results indicate that CO2 is mainly physisorbed on the composites at dry dynamic conditions at ambient temperature and pressure. The primary adsorption sites include small micropores specific for the composites, open Cu sites, and cage window sites.

Metal–Organic Framework-Functionalized Alumina Membranes for Vacuum Membrane Distillation

“…Therefore, MOFs are widely regarded as versatile materials for separation, storage, drug delivery, catalysis, etc. [7][8][9][10]. Thousands of MOF structures have been synthesized and their numbers are still growing [11].…”

Metal–Organic Frameworks Constructed from d-Camphor Acid: Bifunctional Properties Related to Luminescence Sensing and Liquid-Phase Separation

“…[1][2][3][4][5][6] Recently, there is an increasing trend in using luminescence MOFs to probe guest species, and thus developing multifunctional MOFs combining luminescence and other promising applications, such as magnetism and biomedicine. [7][8][9][10][11] However, only very limited MOFs for simultaneously detecting diverse kinds of analytes were investigated; [12][13] quite few luminescent MOF sensors have been discovered capable of quantitative detection up to now.…”

Enhanced CO2 Adsorption on Activated Carbon‐Modified HKUST‐1 Composites

“…For example, it was found that graphene oxide (GO), multi‐walled carbon nanotube (MWCNT), AC doping MOFs can both enhance porosity of the composite materials to improve its adsorption properties of gas . As far as the early report, GO could increase the MOF adsorption capacity substantially . However the adsorption of MOF@GO may be not stable, because that GO has serious deficiency of the coordination of particles so as to make them easy to accumulate .…”