Molecularly-Imprinted Material for Dibenzothiophene Recognition Prepared by Surface Imprinting Methods
Molecular imprinting has been conducted on the surface of TiO 2 particles to enable the recognition of dibenzothiophene (DBT) molecules. This was achieved via the use of a novel surface molecular-imprinting technique. The adsorption behaviour of the dibenzothiophene-imprinted material (D-MIP/TiO 2 )...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2009-12-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.27.10.975 |
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| author | Pingping Xu Wanzhen Xu Xiaojie Zhang Jianming Pan Yongsheng Yan |
| author_facet | Pingping Xu Wanzhen Xu Xiaojie Zhang Jianming Pan Yongsheng Yan |
| author_sort | Pingping Xu |
| collection | DOAJ |
| description | Molecular imprinting has been conducted on the surface of TiO 2 particles to enable the recognition of dibenzothiophene (DBT) molecules. This was achieved via the use of a novel surface molecular-imprinting technique. The adsorption behaviour of the dibenzothiophene-imprinted material (D-MIP/TiO 2 ) was evaluated using batch adsorption experiments to determine the kinetic, isotherm and thermodynamic parameters. The experimental results showed that the adsorption process followed pseudo-second-order kinetics and that the experimental data were well fitted by the Freundlich adsorption equation. This indicated that adsorption involved a multilayer process. Values of the Gibbs' free energy (ΔG 0 ) ranged from −7.11 kJ/mol to −9.36 kJ/mol over the temperature interval 298–318 K, indicating that the adsorption was endothermic in nature. In addition, D-MIP exhibited selective recognition of DBT relative to other similar compounds such as benzothiophene (BT), 4-methyldibenzothiphene (4-MDBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT). In the corresponding selectivity test, D-MIP/TiO 2 showed a greater adsorption capacity towards DBT than BT, 4-MDBT and 4,6-DMDBT. The large imprinting factor (ca. 2.5) exhibited by D-MIP/TiO 2 for DBT could be explained in terms of a covalent assembly mechanism. |
| format | Article |
| id | doaj-art-ace2e7cdac724e58bdd617323c876486 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2009-12-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-ace2e7cdac724e58bdd617323c8764862025-01-03T01:24:46ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382009-12-012710.1260/0263-6174.27.10.975Molecularly-Imprinted Material for Dibenzothiophene Recognition Prepared by Surface Imprinting MethodsPingping XuWanzhen XuXiaojie ZhangJianming PanYongsheng YanMolecular imprinting has been conducted on the surface of TiO 2 particles to enable the recognition of dibenzothiophene (DBT) molecules. This was achieved via the use of a novel surface molecular-imprinting technique. The adsorption behaviour of the dibenzothiophene-imprinted material (D-MIP/TiO 2 ) was evaluated using batch adsorption experiments to determine the kinetic, isotherm and thermodynamic parameters. The experimental results showed that the adsorption process followed pseudo-second-order kinetics and that the experimental data were well fitted by the Freundlich adsorption equation. This indicated that adsorption involved a multilayer process. Values of the Gibbs' free energy (ΔG 0 ) ranged from −7.11 kJ/mol to −9.36 kJ/mol over the temperature interval 298–318 K, indicating that the adsorption was endothermic in nature. In addition, D-MIP exhibited selective recognition of DBT relative to other similar compounds such as benzothiophene (BT), 4-methyldibenzothiphene (4-MDBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT). In the corresponding selectivity test, D-MIP/TiO 2 showed a greater adsorption capacity towards DBT than BT, 4-MDBT and 4,6-DMDBT. The large imprinting factor (ca. 2.5) exhibited by D-MIP/TiO 2 for DBT could be explained in terms of a covalent assembly mechanism.https://doi.org/10.1260/0263-6174.27.10.975 |
| spellingShingle | Pingping Xu Wanzhen Xu Xiaojie Zhang Jianming Pan Yongsheng Yan Molecularly-Imprinted Material for Dibenzothiophene Recognition Prepared by Surface Imprinting Methods Adsorption Science & Technology |
| title | Molecularly-Imprinted Material for Dibenzothiophene Recognition Prepared by Surface Imprinting Methods |
| title_full | Molecularly-Imprinted Material for Dibenzothiophene Recognition Prepared by Surface Imprinting Methods |
| title_fullStr | Molecularly-Imprinted Material for Dibenzothiophene Recognition Prepared by Surface Imprinting Methods |
| title_full_unstemmed | Molecularly-Imprinted Material for Dibenzothiophene Recognition Prepared by Surface Imprinting Methods |
| title_short | Molecularly-Imprinted Material for Dibenzothiophene Recognition Prepared by Surface Imprinting Methods |
| title_sort | molecularly imprinted material for dibenzothiophene recognition prepared by surface imprinting methods |
| url | https://doi.org/10.1260/0263-6174.27.10.975 |
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