Copper Sorption on a Straw Lignin: Experiments and EPR Characterization
Spectroscopic and physicochemical data, X-ray photoelectron spectroscopy (XPS), solid-state 13C cross-polarization magic-angle-spinning NMR, GC/MS, specific surface area, site density, and surface acidity constants have been recorded or determined for a ligno-cellulosic substrate (LS) extracted from...
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| Veröffentlicht in: | Journal of colloid and interface science 2002-01, Vol.245 (1), p.24-31 |
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| creator | Merdy, Patricia Guillon, Emmanuel Aplincourt, Michel Dumonceau, Jacques Vezin, Hervé |
| description | Spectroscopic and physicochemical data, X-ray photoelectron spectroscopy (XPS), solid-state 13C cross-polarization magic-angle-spinning NMR, GC/MS, specific surface area, site density, and surface acidity constants have been recorded or determined for a ligno-cellulosic substrate (LS) extracted from straw. Its copper(II)-bound ability has also been studied. The LS solid that exhibits two types of binding sites, carboxylic and phenolic groups, has a great affinity for copper(II), with a maximum of adsorption at around 4 mg g−1 as early as the pH reaches 6. The structural characterization of the Cu(II) surface complexes has been investigated using EPR spectroscopy. The CuO4 chromophore of the inner-sphere surface complexes is a slightly distorted square. A surface oxidation occurred simultaneously, which leads to semiquinonic radicals. Furthermore, our empirical approach, which used a correlation between thermodynamics data and EPR parameters, has led to a surface complexation constant log β equal to 12.6. This indicates that copper(II) surface complexes are relatively stable. |
| doi_str_mv | 10.1006/jcis.2001.7972 |
| format | Article |
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Its copper(II)-bound ability has also been studied. The LS solid that exhibits two types of binding sites, carboxylic and phenolic groups, has a great affinity for copper(II), with a maximum of adsorption at around 4 mg g−1 as early as the pH reaches 6. The structural characterization of the Cu(II) surface complexes has been investigated using EPR spectroscopy. The CuO4 chromophore of the inner-sphere surface complexes is a slightly distorted square. A surface oxidation occurred simultaneously, which leads to semiquinonic radicals. Furthermore, our empirical approach, which used a correlation between thermodynamics data and EPR parameters, has led to a surface complexation constant log β equal to 12.6. 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Its copper(II)-bound ability has also been studied. The LS solid that exhibits two types of binding sites, carboxylic and phenolic groups, has a great affinity for copper(II), with a maximum of adsorption at around 4 mg g−1 as early as the pH reaches 6. The structural characterization of the Cu(II) surface complexes has been investigated using EPR spectroscopy. The CuO4 chromophore of the inner-sphere surface complexes is a slightly distorted square. A surface oxidation occurred simultaneously, which leads to semiquinonic radicals. Furthermore, our empirical approach, which used a correlation between thermodynamics data and EPR parameters, has led to a surface complexation constant log β equal to 12.6. This indicates that copper(II) surface complexes are relatively stable.</description><subject>Chemical Sciences</subject><subject>Chemistry</subject><subject>copper</subject><subject>Environmental Sciences</subject><subject>EPR</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>lignin</subject><subject>Solid-liquid interface</subject><subject>sorption</subject><subject>straw</subject><subject>Surface physical chemistry</subject><issn>0021-9797</issn><issn>1095-7103</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><recordid>eNp1kEtLxDAURoMoOo5uXUo3Ci465tFX3MkwPmBAcXQdbpNbjXTamnR8_XpTZtCVEAh8Offj5hByxOiEUZqdv2rrJ5xSNsllzrfIiFGZxjmjYpuMKOUsluFhj-x7_xoolqZyl-yxjEsqBBuR62nbdeiiReu63rZNFA5Ei97BRzS3z41tLqLZZyDsEpveR9CYaHb_EE1fwIHuQ_4Nw9wB2amg9ni4ucfk6Wr2OL2J53fXt9PLeawTmvQx6EznGYcKMC0NK3laFSCwEllaosAyEdwIU3FpkgogFUXBaJYUqSnKkichGJOzde8L1KoLW4H7Ui1YdXM5V0MWvlwUOc_fWWBP12zn2rcV-l4trddY19Bgu_Iq55JnwU4AJ2tQu9Z7h9VvM6Nq0KwGzWrQrAbNYeB407wql2j-8I3XAJxsAPAa6spBMzT8ciKRklMZuGLNYXD2btEpry02Go11qHtlWvvfDj_jtZfl</recordid><startdate>20020101</startdate><enddate>20020101</enddate><creator>Merdy, Patricia</creator><creator>Guillon, Emmanuel</creator><creator>Aplincourt, Michel</creator><creator>Dumonceau, Jacques</creator><creator>Vezin, Hervé</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0002-7282-2703</orcidid><orcidid>https://orcid.org/0000-0002-2224-9398</orcidid><orcidid>https://orcid.org/0000-0002-4540-6464</orcidid></search><sort><creationdate>20020101</creationdate><title>Copper Sorption on a Straw Lignin: Experiments and EPR Characterization</title><author>Merdy, Patricia ; Guillon, Emmanuel ; Aplincourt, Michel ; Dumonceau, Jacques ; Vezin, Hervé</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c404t-ac6c762afae5bd1b25f8a3ef365be3eb432d3df29d4faa5388106485d8bb24a53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Chemical Sciences</topic><topic>Chemistry</topic><topic>copper</topic><topic>Environmental Sciences</topic><topic>EPR</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>lignin</topic><topic>Solid-liquid interface</topic><topic>sorption</topic><topic>straw</topic><topic>Surface physical chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Merdy, Patricia</creatorcontrib><creatorcontrib>Guillon, Emmanuel</creatorcontrib><creatorcontrib>Aplincourt, Michel</creatorcontrib><creatorcontrib>Dumonceau, Jacques</creatorcontrib><creatorcontrib>Vezin, Hervé</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Journal of colloid and interface science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Merdy, Patricia</au><au>Guillon, Emmanuel</au><au>Aplincourt, Michel</au><au>Dumonceau, Jacques</au><au>Vezin, Hervé</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Copper Sorption on a Straw Lignin: Experiments and EPR Characterization</atitle><jtitle>Journal of colloid and interface science</jtitle><addtitle>J Colloid Interface Sci</addtitle><date>2002-01-01</date><risdate>2002</risdate><volume>245</volume><issue>1</issue><spage>24</spage><epage>31</epage><pages>24-31</pages><issn>0021-9797</issn><eissn>1095-7103</eissn><coden>JCISA5</coden><abstract>Spectroscopic and physicochemical data, X-ray photoelectron spectroscopy (XPS), solid-state 13C cross-polarization magic-angle-spinning NMR, GC/MS, specific surface area, site density, and surface acidity constants have been recorded or determined for a ligno-cellulosic substrate (LS) extracted from straw. Its copper(II)-bound ability has also been studied. The LS solid that exhibits two types of binding sites, carboxylic and phenolic groups, has a great affinity for copper(II), with a maximum of adsorption at around 4 mg g−1 as early as the pH reaches 6. The structural characterization of the Cu(II) surface complexes has been investigated using EPR spectroscopy. The CuO4 chromophore of the inner-sphere surface complexes is a slightly distorted square. A surface oxidation occurred simultaneously, which leads to semiquinonic radicals. Furthermore, our empirical approach, which used a correlation between thermodynamics data and EPR parameters, has led to a surface complexation constant log β equal to 12.6. 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| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Chemical Sciences Chemistry copper Environmental Sciences EPR Exact sciences and technology General and physical chemistry lignin Solid-liquid interface sorption straw Surface physical chemistry |
| title | Copper Sorption on a Straw Lignin: Experiments and EPR Characterization |
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