Layer-by-layer assembly of imogolite nanotubes and polyelectrolytes into core-shell particles and their conversion to hierarchically porous spheres
Core-shell particles were prepared by the layer-by-layer (LbL) assembly of imogolite (IMO) nanotubes and poly(sodium 4-styrenesulfonate) (PSS) on polystyrene particles (diameter: 800 nm) coated preliminarily with poly(diallyldimethylammonium chloride) (PDDA). PSS and imogolite were alternately adsor...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2008-01-01
|
| Series: | Science and Technology of Advanced Materials |
| Subjects: | |
| Online Access: | http://www.iop.org/EJ/abstract/1468-6996/9/2/025018 |
| _version_ | 1828769994159161344 |
|---|---|
| author | Yoshiyuki Kuroda et al |
| author_facet | Yoshiyuki Kuroda et al |
| author_sort | Yoshiyuki Kuroda et al |
| collection | DOAJ |
| description | Core-shell particles were prepared by the layer-by-layer (LbL) assembly of imogolite (IMO) nanotubes and poly(sodium 4-styrenesulfonate) (PSS) on polystyrene particles (diameter: 800 nm) coated preliminarily with poly(diallyldimethylammonium chloride) (PDDA). PSS and imogolite were alternately adsorbed on the particles to form core-shell particles with one to three bilayers of PSS/IMO. Macroporous hollow spheres were formed by removing polystyrene cores via heat treatment or extraction when the number of bilayers was 2 or 3. The sample formed by extraction (the number of bilayer was 3) showed only macroporosity and PSS remained in the shell, whereas the heat-treated sample showed hierarchical micro- and macroporosities. When the diameter of polystyrene particles decreased from 800 nm to 300 or 100 nm, hollow spheres were deformed because of the increase in the relative length of imogolite nanotubes against the size of polystyrene particles. Imogolite is a promising building block of hierarchically porous materials with core-shell morphologies using LbL assembly. |
| first_indexed | 2024-12-11T13:58:54Z |
| format | Article |
| id | doaj.art-8ebe315464234206bb63fcf511f807d1 |
| institution | Directory Open Access Journal |
| issn | 1468-6996 1878-5514 |
| language | English |
| last_indexed | 2024-12-11T13:58:54Z |
| publishDate | 2008-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Science and Technology of Advanced Materials |
| spelling | doaj.art-8ebe315464234206bb63fcf511f807d12022-12-22T01:03:56ZengTaylor & Francis GroupScience and Technology of Advanced Materials1468-69961878-55142008-01-0192025018Layer-by-layer assembly of imogolite nanotubes and polyelectrolytes into core-shell particles and their conversion to hierarchically porous spheresYoshiyuki Kuroda et alCore-shell particles were prepared by the layer-by-layer (LbL) assembly of imogolite (IMO) nanotubes and poly(sodium 4-styrenesulfonate) (PSS) on polystyrene particles (diameter: 800 nm) coated preliminarily with poly(diallyldimethylammonium chloride) (PDDA). PSS and imogolite were alternately adsorbed on the particles to form core-shell particles with one to three bilayers of PSS/IMO. Macroporous hollow spheres were formed by removing polystyrene cores via heat treatment or extraction when the number of bilayers was 2 or 3. The sample formed by extraction (the number of bilayer was 3) showed only macroporosity and PSS remained in the shell, whereas the heat-treated sample showed hierarchical micro- and macroporosities. When the diameter of polystyrene particles decreased from 800 nm to 300 or 100 nm, hollow spheres were deformed because of the increase in the relative length of imogolite nanotubes against the size of polystyrene particles. Imogolite is a promising building block of hierarchically porous materials with core-shell morphologies using LbL assembly.http://www.iop.org/EJ/abstract/1468-6996/9/2/025018hierarchically porous materialslayer-by-layercolloidal templatingcore-shell particleshollow spheresimogolitenanotubes |
| spellingShingle | Yoshiyuki Kuroda et al Layer-by-layer assembly of imogolite nanotubes and polyelectrolytes into core-shell particles and their conversion to hierarchically porous spheres Science and Technology of Advanced Materials hierarchically porous materials layer-by-layer colloidal templating core-shell particles hollow spheres imogolite nanotubes |
| title | Layer-by-layer assembly of imogolite nanotubes and polyelectrolytes into core-shell particles and their conversion to hierarchically porous spheres |
| title_full | Layer-by-layer assembly of imogolite nanotubes and polyelectrolytes into core-shell particles and their conversion to hierarchically porous spheres |
| title_fullStr | Layer-by-layer assembly of imogolite nanotubes and polyelectrolytes into core-shell particles and their conversion to hierarchically porous spheres |
| title_full_unstemmed | Layer-by-layer assembly of imogolite nanotubes and polyelectrolytes into core-shell particles and their conversion to hierarchically porous spheres |
| title_short | Layer-by-layer assembly of imogolite nanotubes and polyelectrolytes into core-shell particles and their conversion to hierarchically porous spheres |
| title_sort | layer by layer assembly of imogolite nanotubes and polyelectrolytes into core shell particles and their conversion to hierarchically porous spheres |
| topic | hierarchically porous materials layer-by-layer colloidal templating core-shell particles hollow spheres imogolite nanotubes |
| url | http://www.iop.org/EJ/abstract/1468-6996/9/2/025018 |
| work_keys_str_mv | AT yoshiyukikurodaetal layerbylayerassemblyofimogolitenanotubesandpolyelectrolytesintocoreshellparticlesandtheirconversiontohierarchicallyporousspheres |