Journal
RSC ADVANCES
Volume 7, Issue 86, Pages 54546-54553Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra09541d
Keywords
-
Categories
Funding
- UK Korea Joint Research Program through NRF grants - Ministry of Science, ICT, and Future Planning [NRF-2015M2A7A1000219]
- Engineering and Physical Sciences Research Council [EP/M026426/1]
- EPSRC [EP/M026426/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/M026426/1] Funding Source: researchfish
Ask authors/readers for more resources
Oxygen-enriched carbon materials derived from carbon dioxide were functionalized using sulfonic acid to remove Sr2+ ions from aqueous solutions. Synthesized sulfonated porous carbon materials (PC-SO3H) showed higher adsorption capacity and selectivity towards Sr2+ than non-functionalized porous carbons (PC). The formation of the C-SO3H functional group in PC-SO3H and its ability to proton exchange with Sr2+ was the main contributor to the enhanced performance. The maximum uptake capacity of Sr2+ by PC-SO3H was 18.97 mg g(-1), which was 1.74 times greater than PC. PC-SO3H removed 99.9% and 97.6% of Sr2+ from aqueous solutions with initial Sr2+ concentrations of 5 mg L-1 and 10 mg L-1, respectively. Sr2+ adsorption showed rapid kinetics, reaching the adsorption equilibrium within 1 h with high adsorption capacity at equilibrium which is 3.52 times greater than that of PC. Additionally, PC-SO3H selectively adsorbed Sr2+ even in the presence of excess amounts of competing ions. Sulfonation of oxygen-enriched carbon had a significant effect on enhancing the affinity towards Sr2+ and suppressing adsorption towards other competing ions.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available