Enhanced adsorption capacity and selectivity towards strontium ions in aqueous systems by sulfonation of CO2 derived porous carbon
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 carb...
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| Veröffentlicht in: | RSC advances 2017-01, Vol.7 (86), p.54546-54553 |
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| creator | Baik, S Zhang, H Kim, Y K Harbottle, D Lee, J W |
| description | 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. |
| doi_str_mv | 10.1039/c7ra09541d |
| format | Article |
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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.</description><identifier>EISSN: 2046-2069</identifier><identifier>DOI: 10.1039/c7ra09541d</identifier><language>eng</language><publisher>Cambridge: Royal Society of Chemistry</publisher><subject>Adsorption ; Aqueous solutions ; Carbon ; Carbon dioxide ; Chemical synthesis ; Functional groups ; Oxygen enrichment ; Porous materials ; Reaction kinetics ; Selectivity ; Sulfonic acid</subject><ispartof>RSC advances, 2017-01, Vol.7 (86), p.54546-54553</ispartof><rights>Copyright Royal Society of Chemistry 2017</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,864,27923,27924</link.rule.ids></links><search><creatorcontrib>Baik, S</creatorcontrib><creatorcontrib>Zhang, H</creatorcontrib><creatorcontrib>Kim, Y K</creatorcontrib><creatorcontrib>Harbottle, D</creatorcontrib><creatorcontrib>Lee, J W</creatorcontrib><title>Enhanced adsorption capacity and selectivity towards strontium ions in aqueous systems by sulfonation of CO2 derived porous carbon</title><title>RSC advances</title><description>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.</description><subject>Adsorption</subject><subject>Aqueous solutions</subject><subject>Carbon</subject><subject>Carbon dioxide</subject><subject>Chemical synthesis</subject><subject>Functional groups</subject><subject>Oxygen enrichment</subject><subject>Porous materials</subject><subject>Reaction kinetics</subject><subject>Selectivity</subject><subject>Sulfonic acid</subject><issn>2046-2069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNotT7tqAzEQFIFAjOMmXyBIfYm00t1ZZTDOAwxuktqsXuSMLV0knYPbfHmUxzazwwwzu4TccHbHmVD3pk_IVCu5vSAzYLJrgHXqiixy3rM6Xcuh4zPytQ7vGIyzFG2OaSxDDNTgiGYoZ4rB0uwOzpTh9MNL_MRkM80lxVCG6UirPdMhUPyYXJyqcs7FHTPVZ5qng48BfxOjp6stUOvScKpdY0w_ZoNJx3BNLj0eslv845y8Pa5fV8_NZvv0snrYNCNwVRqlneDaQsuVl1aCZwZ6KXQnNbj6qUHpQRrgXGhlmfBL1K2te6-M5X0v5uT2L3dMsV6by24fpxRq5Q4YZ0sFki_FN6KhYwQ</recordid><startdate>20170101</startdate><enddate>20170101</enddate><creator>Baik, S</creator><creator>Zhang, H</creator><creator>Kim, Y K</creator><creator>Harbottle, D</creator><creator>Lee, J W</creator><general>Royal Society of Chemistry</general><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20170101</creationdate><title>Enhanced adsorption capacity and selectivity towards strontium ions in aqueous systems by sulfonation of CO2 derived porous carbon</title><author>Baik, S ; Zhang, H ; Kim, Y K ; Harbottle, D ; Lee, J W</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p219t-9be31bd2519f4d42f0c2743b64b2e954ca4f24c2113b9d03f8ab5d3b979cd1773</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Adsorption</topic><topic>Aqueous solutions</topic><topic>Carbon</topic><topic>Carbon dioxide</topic><topic>Chemical synthesis</topic><topic>Functional groups</topic><topic>Oxygen enrichment</topic><topic>Porous materials</topic><topic>Reaction kinetics</topic><topic>Selectivity</topic><topic>Sulfonic acid</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Baik, S</creatorcontrib><creatorcontrib>Zhang, H</creatorcontrib><creatorcontrib>Kim, Y K</creatorcontrib><creatorcontrib>Harbottle, D</creatorcontrib><creatorcontrib>Lee, J W</creatorcontrib><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>RSC advances</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Baik, S</au><au>Zhang, H</au><au>Kim, Y K</au><au>Harbottle, D</au><au>Lee, J W</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enhanced adsorption capacity and selectivity towards strontium ions in aqueous systems by sulfonation of CO2 derived porous carbon</atitle><jtitle>RSC advances</jtitle><date>2017-01-01</date><risdate>2017</risdate><volume>7</volume><issue>86</issue><spage>54546</spage><epage>54553</epage><pages>54546-54553</pages><eissn>2046-2069</eissn><abstract>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.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><doi>10.1039/c7ra09541d</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| source | DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | Adsorption Aqueous solutions Carbon Carbon dioxide Chemical synthesis Functional groups Oxygen enrichment Porous materials Reaction kinetics Selectivity Sulfonic acid |
| title | Enhanced adsorption capacity and selectivity towards strontium ions in aqueous systems by sulfonation of CO2 derived porous carbon |
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