Surface Modification of Silica Gel by Interfacial Polyelectrolyte Complexes
Two types of modified silica gel have been prepared by constructing layers of a thermolabile interfacial polyelectrolyte complex on the surface of silica gel using diazo resin (DR) as the polycation and poly(sodium styrene sulphonate) (PSS) as the polyanion. Dye adsorption from aqueous solution was...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SAGE Publications
1999-06-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/026361749901700602 |
| _version_ | 1797288255328092160 |
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| author | Yongjun Zhang Weixiao Cao |
| author_facet | Yongjun Zhang Weixiao Cao |
| author_sort | Yongjun Zhang |
| collection | DOAJ |
| description | Two types of modified silica gel have been prepared by constructing layers of a thermolabile interfacial polyelectrolyte complex on the surface of silica gel using diazo resin (DR) as the polycation and poly(sodium styrene sulphonate) (PSS) as the polyanion. Dye adsorption from aqueous solution was employed to estimate the surface properties of the silica gels. It is believed that the diazo resin is anchored on the surface of the silica gel after thermal treatment through covalent bond formation. The adsorption ability of the surface for cationic dyes increases after such modification. Anionic dyes, which cannot be adsorbed by the unmodified silica gel, can be adsorbed by the modified ones. This indicates that a hydrophobic surface has been built up on the silica gel. |
| first_indexed | 2024-03-07T18:46:42Z |
| format | Article |
| id | doaj.art-bd1fa28c37754582a3237bdd73d018bd |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2024-03-07T18:46:42Z |
| publishDate | 1999-06-01 |
| publisher | SAGE Publications |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-bd1fa28c37754582a3237bdd73d018bd2024-03-02T02:30:55ZengSAGE PublicationsAdsorption Science & Technology0263-61742048-40381999-06-011710.1177/026361749901700602Surface Modification of Silica Gel by Interfacial Polyelectrolyte ComplexesYongjun ZhangWeixiao CaoTwo types of modified silica gel have been prepared by constructing layers of a thermolabile interfacial polyelectrolyte complex on the surface of silica gel using diazo resin (DR) as the polycation and poly(sodium styrene sulphonate) (PSS) as the polyanion. Dye adsorption from aqueous solution was employed to estimate the surface properties of the silica gels. It is believed that the diazo resin is anchored on the surface of the silica gel after thermal treatment through covalent bond formation. The adsorption ability of the surface for cationic dyes increases after such modification. Anionic dyes, which cannot be adsorbed by the unmodified silica gel, can be adsorbed by the modified ones. This indicates that a hydrophobic surface has been built up on the silica gel.https://doi.org/10.1177/026361749901700602 |
| spellingShingle | Yongjun Zhang Weixiao Cao Surface Modification of Silica Gel by Interfacial Polyelectrolyte Complexes Adsorption Science & Technology |
| title | Surface Modification of Silica Gel by Interfacial Polyelectrolyte Complexes |
| title_full | Surface Modification of Silica Gel by Interfacial Polyelectrolyte Complexes |
| title_fullStr | Surface Modification of Silica Gel by Interfacial Polyelectrolyte Complexes |
| title_full_unstemmed | Surface Modification of Silica Gel by Interfacial Polyelectrolyte Complexes |
| title_short | Surface Modification of Silica Gel by Interfacial Polyelectrolyte Complexes |
| title_sort | surface modification of silica gel by interfacial polyelectrolyte complexes |
| url | https://doi.org/10.1177/026361749901700602 |
| work_keys_str_mv | AT yongjunzhang surfacemodificationofsilicagelbyinterfacialpolyelectrolytecomplexes AT weixiaocao surfacemodificationofsilicagelbyinterfacialpolyelectrolytecomplexes |