Efficient CO₂ adsorption using mesoporous carbons from biowastes

Abstract

The mesoporous carbon nanomaterials obtained from waste onion peels confirmed the formation of mesoporous carbon nanospheres (CNSs) with an average pore diameter of 2 nm. The as obtained CNSs were studied to demonstrate their ability to adsorb the greenhouse gas CO 2 at different temperatures, 30, 40 and 50°C. The results showed that the CNSs have high potential to adsorb CO 2 at these temperatures. Present work demonstrates the formation of sustainable, porous adsorbents by a simple waste to wealth based approach that is effective for the adsorption of CO 2 .

Mesoporous Carbon-Based Materials: A Review of Synthesis, Modification, and Applications

“…The results showed that when the mesoporous carbon support was modified by 80 wt% tetraethylenepentamine, the adsorbent had a high CO 2 capture amount of 5.3 mmol/g at 75 • C with excellent cycling stability. Apart from these, several other reports on the adsorption of different molecules have been seen in the literature [66][67][68][69][70]. As discussed above in this review, the mesoporous carbon materials with high specific areas are among the best materials to use as adsorbents.…”

Role of additives in silica-supported polyethylenimine adsorbents for CO2 adsorption

“…Thermal stability loss rate (%) carbon dioxide adsorbed increases first and then decreases [16,17]. Ganesan Sriram prepared the mesoporous carbon nanospheres (CNSs), which its CO 2 adsorption increased and then followed a reduction trend, at the three temperatures [18]. 273 K is the minimum temperature at which carbon dioxide adsorption can be measured.…”

Toxicological Profiling of Onion-Peel-Derived Mesoporous Carbon Nanospheres Using In Vivo Drosophila melanogaster Model

“…Synthesized CNSs have been tested for various applications, such as electrode materials for energy storage devices and electrochemical sensors [37,42], in photomechanical actuators [43], and as materials for CO 2 adsorption [44], owing to the very high surface area and porosity. Such varied and increased use of nanoparticles leads to the exposure of humans to nanoparticles.…”