Layer charge and electrophoretic mobility of smectites
The aim of this study is to determine the effect of the layer charge of smectites on their electrophoretic mobility (EM), using electrophoresis measurements. In order to cover the charge domain from 0 to 2 charges per unit structural cell, two clay series were used: thermally treated Cu-montmorillon...
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| Veröffentlicht in: | Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 1999-12, Vol.159 (2), p.351-358 |
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| container_title | Colloids and surfaces. A, Physicochemical and engineering aspects |
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| creator | Thomas, F Michot, L.J Vantelon, D Montargès, E Prélot, B Cruchaudet, M Delon, J.F |
| description | The aim of this study is to determine the effect of the layer charge of smectites on their electrophoretic mobility (EM), using electrophoresis measurements. In order to cover the charge domain from 0 to 2 charges per unit structural cell, two clay series were used: thermally treated Cu-montmorillonite (0–0.7) and synthetic saponites (0.7–2). All the studied samples are negatively charged in a pH range from 2 to 12. Neither layer charge nor ionic strength influences the EM of smectites at neutral to alkaline pH. At acidic pH, the EM of smectites ranges from −3 to −0.4 10
−8 m
2 s
−1 V
−1 when the layer charge ranges from 0.8 to 2. High charge and low charge smectites, which are not expandable, tend to aggregate in aqueous suspension, and the measured EM corresponds then to the amphoteric sites of the edge faces of the layer stacks. These sites are negatively charged at pH values above 3. |
| doi_str_mv | 10.1016/S0927-7757(99)00291-5 |
| format | Article |
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−8 m
2 s
−1 V
−1 when the layer charge ranges from 0.8 to 2. High charge and low charge smectites, which are not expandable, tend to aggregate in aqueous suspension, and the measured EM corresponds then to the amphoteric sites of the edge faces of the layer stacks. These sites are negatively charged at pH values above 3.</description><identifier>ISSN: 0927-7757</identifier><identifier>EISSN: 1873-4359</identifier><identifier>DOI: 10.1016/S0927-7757(99)00291-5</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Chemical Sciences ; Continental interfaces, environment ; Cu-montmorillonite ; Electrophoretic mobility ; Environmental Sciences ; Global Changes ; Layer charge ; or physical chemistry ; Sciences of the Universe ; Smectites ; Synthetic saponites ; Theoretical and</subject><ispartof>Colloids and surfaces. A, Physicochemical and engineering aspects, 1999-12, Vol.159 (2), p.351-358</ispartof><rights>1999 Elsevier Science B.V.</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c407t-e7aa694929142896aa21e2e94f7d9b595ee39b75c6a4b5a5af7e8f87dedf90cb3</citedby><cites>FETCH-LOGICAL-c407t-e7aa694929142896aa21e2e94f7d9b595ee39b75c6a4b5a5af7e8f87dedf90cb3</cites><orcidid>0000-0002-9478-6694 ; 0000-0003-4155-4395 ; 0000-0003-2533-6080</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0927775799002915$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,776,780,881,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://hal.science/hal-00345882$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Thomas, F</creatorcontrib><creatorcontrib>Michot, L.J</creatorcontrib><creatorcontrib>Vantelon, D</creatorcontrib><creatorcontrib>Montargès, E</creatorcontrib><creatorcontrib>Prélot, B</creatorcontrib><creatorcontrib>Cruchaudet, M</creatorcontrib><creatorcontrib>Delon, J.F</creatorcontrib><title>Layer charge and electrophoretic mobility of smectites</title><title>Colloids and surfaces. A, Physicochemical and engineering aspects</title><description>The aim of this study is to determine the effect of the layer charge of smectites on their electrophoretic mobility (EM), using electrophoresis measurements. In order to cover the charge domain from 0 to 2 charges per unit structural cell, two clay series were used: thermally treated Cu-montmorillonite (0–0.7) and synthetic saponites (0.7–2). All the studied samples are negatively charged in a pH range from 2 to 12. Neither layer charge nor ionic strength influences the EM of smectites at neutral to alkaline pH. At acidic pH, the EM of smectites ranges from −3 to −0.4 10
−8 m
2 s
−1 V
−1 when the layer charge ranges from 0.8 to 2. High charge and low charge smectites, which are not expandable, tend to aggregate in aqueous suspension, and the measured EM corresponds then to the amphoteric sites of the edge faces of the layer stacks. These sites are negatively charged at pH values above 3.</description><subject>Chemical Sciences</subject><subject>Continental interfaces, environment</subject><subject>Cu-montmorillonite</subject><subject>Electrophoretic mobility</subject><subject>Environmental Sciences</subject><subject>Global Changes</subject><subject>Layer charge</subject><subject>or physical chemistry</subject><subject>Sciences of the Universe</subject><subject>Smectites</subject><subject>Synthetic saponites</subject><subject>Theoretical and</subject><issn>0927-7757</issn><issn>1873-4359</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><recordid>eNqFkEFLAzEQhYMoWKs_QdijPawmu8lm5ySlqBUWPKjnMJud2Mi2KclS6L9324pXTwMz7z3mfYzdCn4vuKge3jkUOtda6TuAGecFiFydsYmodZnLUsE5m_xJLtlVSt-cc6k0TFjV4J5iZlcYvyjDTZdRT3aIYbsKkQZvs3Vofe-HfRZcltbjzQ-UrtmFwz7Rze-css_np4_FMm_eXl4X8ya3kushJ41YgYTxI1nUUCEWggoC6XQHrQJFVEKrla1QtgoVOk21q3VHnQNu23LKZqfcFfZmG_0a494E9GY5b8xhx3kpVV0XOzFq1UlrY0gpkvszCG4OoMwRlDlQMADmCMqo0fd48tFYZOcpmmQ9bSx1Po51TRf8Pwk_gy1v2A</recordid><startdate>199912</startdate><enddate>199912</enddate><creator>Thomas, F</creator><creator>Michot, L.J</creator><creator>Vantelon, D</creator><creator>Montargès, E</creator><creator>Prélot, B</creator><creator>Cruchaudet, M</creator><creator>Delon, J.F</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0002-9478-6694</orcidid><orcidid>https://orcid.org/0000-0003-4155-4395</orcidid><orcidid>https://orcid.org/0000-0003-2533-6080</orcidid></search><sort><creationdate>199912</creationdate><title>Layer charge and electrophoretic mobility of smectites</title><author>Thomas, F ; Michot, L.J ; Vantelon, D ; Montargès, E ; Prélot, B ; Cruchaudet, M ; Delon, J.F</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c407t-e7aa694929142896aa21e2e94f7d9b595ee39b75c6a4b5a5af7e8f87dedf90cb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>Chemical Sciences</topic><topic>Continental interfaces, environment</topic><topic>Cu-montmorillonite</topic><topic>Electrophoretic mobility</topic><topic>Environmental Sciences</topic><topic>Global Changes</topic><topic>Layer charge</topic><topic>or physical chemistry</topic><topic>Sciences of the Universe</topic><topic>Smectites</topic><topic>Synthetic saponites</topic><topic>Theoretical and</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Thomas, F</creatorcontrib><creatorcontrib>Michot, L.J</creatorcontrib><creatorcontrib>Vantelon, D</creatorcontrib><creatorcontrib>Montargès, E</creatorcontrib><creatorcontrib>Prélot, B</creatorcontrib><creatorcontrib>Cruchaudet, M</creatorcontrib><creatorcontrib>Delon, J.F</creatorcontrib><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Colloids and surfaces. A, Physicochemical and engineering aspects</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Thomas, F</au><au>Michot, L.J</au><au>Vantelon, D</au><au>Montargès, E</au><au>Prélot, B</au><au>Cruchaudet, M</au><au>Delon, J.F</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Layer charge and electrophoretic mobility of smectites</atitle><jtitle>Colloids and surfaces. A, Physicochemical and engineering aspects</jtitle><date>1999-12</date><risdate>1999</risdate><volume>159</volume><issue>2</issue><spage>351</spage><epage>358</epage><pages>351-358</pages><issn>0927-7757</issn><eissn>1873-4359</eissn><abstract>The aim of this study is to determine the effect of the layer charge of smectites on their electrophoretic mobility (EM), using electrophoresis measurements. In order to cover the charge domain from 0 to 2 charges per unit structural cell, two clay series were used: thermally treated Cu-montmorillonite (0–0.7) and synthetic saponites (0.7–2). All the studied samples are negatively charged in a pH range from 2 to 12. Neither layer charge nor ionic strength influences the EM of smectites at neutral to alkaline pH. At acidic pH, the EM of smectites ranges from −3 to −0.4 10
−8 m
2 s
−1 V
−1 when the layer charge ranges from 0.8 to 2. High charge and low charge smectites, which are not expandable, tend to aggregate in aqueous suspension, and the measured EM corresponds then to the amphoteric sites of the edge faces of the layer stacks. These sites are negatively charged at pH values above 3.</abstract><pub>Elsevier B.V</pub><doi>10.1016/S0927-7757(99)00291-5</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-9478-6694</orcidid><orcidid>https://orcid.org/0000-0003-4155-4395</orcidid><orcidid>https://orcid.org/0000-0003-2533-6080</orcidid></addata></record> |
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| identifier | ISSN: 0927-7757 |
| ispartof | Colloids and surfaces. A, Physicochemical and engineering aspects, 1999-12, Vol.159 (2), p.351-358 |
| issn | 0927-7757 1873-4359 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Chemical Sciences Continental interfaces, environment Cu-montmorillonite Electrophoretic mobility Environmental Sciences Global Changes Layer charge or physical chemistry Sciences of the Universe Smectites Synthetic saponites Theoretical and |
| title | Layer charge and electrophoretic mobility of smectites |
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