The synergistic effect of oxygen-containing functional groups on CO2 adsorption by the glucose-potassium citrate-derived activated carbon
MetadataShow full item record
A high surface area activated carbon prepared by an innovative approach using glucose as a carbon source and neutral potassium citrate (PC) as an activator was compared with the porous carbon from glucose using corrosive potassium hydroxide (KOH) as an activator. The PC method showed two notable advantages over KOH activation. The PC method not only significantly increased the yield of the activated carbon, particularly at high carbonization temperatures without sacrificing porosity, but also enhanced the oxygen content in the activated carbon. After investigating CO2 adsorption on these activated carbons, a remarkable uptake of 3.57 mmol g-1 at 25 °C at 1 bar was observed by the glucose-PC-derived carbon sample, which possessed the highest oxygen content. In addition, the glucose-PC-derived carbon samples exhibited higher CO2/N2 selectivity than the glucose-KOH derived samples. Coupled with the density functional theory (DFT) analysis that focused on the binding energy calculation, the doped oxygen-containing functional groups, such as carboxyl and hydroxyl groups, could effectively enhance the adsorption of CO2.
Showing items related by title, author, creator and subject.
Formation and characteristics of glucose oligomers during the hydrolysis of cellulose in hot-compressed waterYu, Yun (2009)Energy production from fossil fuels results in significant carbon dioxide emission, which is a key contributor to global warming and the problems related to climate change. Biomass is recognized as an important part of ...
Simões, D.; Riva, P.; Peliciari-Garcia, R.; Cruzat, Vinicius; Graciano, M.; Munhoz, A.; Taneda, M.; Cipolla-Neto, J.; Carpinelli, A. (2016)Melatonin is a hormone synthesized in the pineal gland, which modulates several functions within the organism, including the synchronization of glucose metabolism and glucosestimulated insulin secretion (GSIS). Melatonin ...
Activation of peroxymonosulfate by carbonaceous oxygen groups: Experimental and density functional theory calculationsWang, Y.; Ao, Z.; Sun, Hongqi; Duan, X.; Wang, Shaobin (2016)© 2016 Elsevier B.V. The active sites for metal-free carbocatalysis in environmental remediation are intricate compared to those for traditional metal-based catalysis. In this study, we report a facile fabrication of ...