| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 613828 | Journal of Colloid and Interface Science | 2006 | 8 Pages |
An effective method for dispersing NiO onto ordered mesoporous silica, SBA-15, is described. The procedure involves the use of polyethylene oxide (PEO) as an encapsulating agent. It can be expected that encapsulation between PEO and Ni2+ ions mainly involves complexes between PEO and Ni2+ ions. Both N2 adsorption/desorption isotherm and TEM analyses indicate that a 2-dimensionally hexagonal pore structure with a distinct pore symmetry (space group P6mm) is maintained throughout the procedure, even though both Ni2+ ions and PEO are present in the middle of the self-assembly of mesostructured silica. The particle size of the NiO increases slightly as a function of PEO concentration. When the ratio of PEO to the templating agent (triblock copolymer, polyethylene oxide–polypropylene oxide–polyethylene oxide) reaches a value of 4.5, ordered mesoporous silica with NiO is hardly formed.
Graphical abstractThe effective method for dispersing NiO onto ordered mesoporous silica, SBA-15, is described. The procedure involves the use of polyethylene oxide (PEO) as an encapsulating agent. Both N2 adsorption/desorption isotherm and TEM analyses indicate that the 2-dimensionally hexagonal pore structure with a distinct pore symmetry (space group P6mm) is maintained throughout the procedure, even though bot Ni2+ and PEO are present in the middle of the self-assembly of mesostructured silica.Figure optionsDownload full-size imageDownload as PowerPoint slide
