Generation-3 Polyamidoamine Dendrimer-Silica Composite: Preparation and Cd(II) Removal Capacity
Generation-3 polyamidoamine (PAMAM) dendrimer was implanted on silica to produce a very good adsorbent (G-3 PAMAM-SGA). The composite was characterized and used for the removal of Cd(II) ions from aqueous solution. Kinetic data fit the Lagergren pseudo-second-order model and also follow the intrapar...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2020/6662402 |
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| author | Augustus N. Ebelegi Nimibofa Ayawei Azibaola K. Inengite Donbebe Wankasi |
| author_facet | Augustus N. Ebelegi Nimibofa Ayawei Azibaola K. Inengite Donbebe Wankasi |
| author_sort | Augustus N. Ebelegi |
| collection | DOAJ |
| description | Generation-3 polyamidoamine (PAMAM) dendrimer was implanted on silica to produce a very good adsorbent (G-3 PAMAM-SGA). The composite was characterized and used for the removal of Cd(II) ions from aqueous solution. Kinetic data fit the Lagergren pseudo-second-order model and also follow the intraparticle diffusion kinetic model to an extent, which is an indication that the sorption process is controlled by both mechanisms: intraparticle/film layer and adsorption inside the pores/crevices of the composite. Equilibrium sorption data of Cd(II) on G-3 PAMAM-SGA fit the Freundlich isotherm (R2 = 0.9993) which is indicative of multilayered adsorption that occurred on heterogeneous surfaces. The ΔG° values for all temperatures studied were negative, which indicated a spontaneous and feasible process. The result implies that G-3 PAMAM-SGA is a promising adsorbent for microscale scavenging of Cd(II) ions in aqueous solutions. |
| format | Article |
| id | doaj-art-b113e3da8fdb495da3c5a9e7352c4af9 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-b113e3da8fdb495da3c5a9e7352c4af92025-08-20T03:39:26ZengWileyJournal of Chemistry2090-90632090-90712020-01-01202010.1155/2020/66624026662402Generation-3 Polyamidoamine Dendrimer-Silica Composite: Preparation and Cd(II) Removal CapacityAugustus N. Ebelegi0Nimibofa Ayawei1Azibaola K. Inengite2Donbebe Wankasi3Department of Chemical Sciences, Niger Delta University, Amassama, Wilberforce Island, Bayelsa State, NigeriaDepartment of Chemical Sciences, Niger Delta University, Amassama, Wilberforce Island, Bayelsa State, NigeriaDepartment of Chemical Sciences, Niger Delta University, Amassama, Wilberforce Island, Bayelsa State, NigeriaDepartment of Chemical Sciences, Niger Delta University, Amassama, Wilberforce Island, Bayelsa State, NigeriaGeneration-3 polyamidoamine (PAMAM) dendrimer was implanted on silica to produce a very good adsorbent (G-3 PAMAM-SGA). The composite was characterized and used for the removal of Cd(II) ions from aqueous solution. Kinetic data fit the Lagergren pseudo-second-order model and also follow the intraparticle diffusion kinetic model to an extent, which is an indication that the sorption process is controlled by both mechanisms: intraparticle/film layer and adsorption inside the pores/crevices of the composite. Equilibrium sorption data of Cd(II) on G-3 PAMAM-SGA fit the Freundlich isotherm (R2 = 0.9993) which is indicative of multilayered adsorption that occurred on heterogeneous surfaces. The ΔG° values for all temperatures studied were negative, which indicated a spontaneous and feasible process. The result implies that G-3 PAMAM-SGA is a promising adsorbent for microscale scavenging of Cd(II) ions in aqueous solutions.http://dx.doi.org/10.1155/2020/6662402 |
| spellingShingle | Augustus N. Ebelegi Nimibofa Ayawei Azibaola K. Inengite Donbebe Wankasi Generation-3 Polyamidoamine Dendrimer-Silica Composite: Preparation and Cd(II) Removal Capacity Journal of Chemistry |
| title | Generation-3 Polyamidoamine Dendrimer-Silica Composite: Preparation and Cd(II) Removal Capacity |
| title_full | Generation-3 Polyamidoamine Dendrimer-Silica Composite: Preparation and Cd(II) Removal Capacity |
| title_fullStr | Generation-3 Polyamidoamine Dendrimer-Silica Composite: Preparation and Cd(II) Removal Capacity |
| title_full_unstemmed | Generation-3 Polyamidoamine Dendrimer-Silica Composite: Preparation and Cd(II) Removal Capacity |
| title_short | Generation-3 Polyamidoamine Dendrimer-Silica Composite: Preparation and Cd(II) Removal Capacity |
| title_sort | generation 3 polyamidoamine dendrimer silica composite preparation and cd ii removal capacity |
| url | http://dx.doi.org/10.1155/2020/6662402 |
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