Assembly of amine-functionalized graphene oxide for efficient and selective adsorption of CO2

Insights into forming behavior and CO2 adsorption properties of graphene from Sargassum horneri by Fe(NO3)3/KOH activation

“…The contribution of nitrogen was also considered, considering both the nitrate inclusion and additional abundant nitrogen in macroalgae, which led to intensification of nitrogen-containing functional groups or even a self-modulated nitrogen-doping effect. [16][17][18] Additionally, the presence of ferric ions results in chemical stability and low toxicity, which is essential for widespread or on-scale graphene utilization. 19,20 In this study, a graphene-like material was synthesized by Fe(NO 3 ) 3 /KOH activation, and applied to a highly efficient and enhanced adsorption capability toward CO 2 removal.…”

“…Inspired by the synergistic effect of KOH and ferric salts in carbon activation, 14,15 Fe(NO 3 ) 3 .9H 2 O was included in this work to reduce the dosage of KOH because of its lower activation temperature, higher yield and well‐developed porous structure. The contribution of nitrogen was also considered, considering both the nitrate inclusion and additional abundant nitrogen in macroalgae, which led to intensification of nitrogen‐containing functional groups or even a self‐modulated nitrogen‐doping effect 16‐18 . Additionally, the presence of ferric ions results in chemical stability and low toxicity, which is essential for widespread or on‐scale graphene utilization 19,20 …”

Amine (Polyethyleneimine)-modified solid adsorbent for CO2 capture

“…However, the performance of solid adsorbents for practical use is still limited by their low CO2 uptake capacity and selectivity [8]. Amine-functionalized is one of the promising approaches to increase the performance of these adsorbents towards CO2 adsorption due to several advantages such as good stability, lower heat regeneration, and high adsorption potential [9,10]. PEI is one of the amine groups that have been widely used due to its high amino contain and good thermal stability [11].…”

Sewage Sludge Derived Materials for CO2 Adsorption

“…Despite the economic shutdown caused by the coronavirus pandemic response, carbon dioxide emissions, which are main factor in the greenhouse effect (along with methane and nitrous oxide but in a higher concentration), reached a concentration in the atmosphere in 2020 of 414 ppm, constituting a continuous increase according to National Oceanic and Atmospheric Administration Global Monitoring Laboratory [1]. Therefore, different technologies for carbon capture and storage, which involve chemical and physical adsorption, cryogenic distillation, and membrane separation, were proposed [2][3][4][5][6][7]. These processes have both advantages and disadvantages, such as high energy consumption for cryogenic distillation or the trade-off relation between the membrane permeability and selectivity.…”

“…These processes have both advantages and disadvantages, such as high energy consumption for cryogenic distillation or the trade-off relation between the membrane permeability and selectivity. The adsorption technique has attracted serious attention due to low energy consumption and cost-efficiency ratio [7][8][9][10]. In order to be considered potential candidates for CO 2 adsorption, the materials must also possess some properties, such as high surface area, high pore volume, low affinity to moisture, regeneration ability, thermal and mechanical stability, and high selectivity [11].…”