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dc.contributor.author
Sosa, Alexis Alberto  
dc.contributor.author
Gorsd, Marina Noelia  
dc.contributor.author
Blanco, Mirta Noemi  
dc.contributor.author
Pizzio, Luis Rene  
dc.date.available
2017-12-27T18:10:40Z  
dc.date.issued
2017-05-27  
dc.identifier.citation
Pizzio, Luis Rene; Blanco, Mirta Noemi; Gorsd, Marina Noelia; Sosa, Alexis Alberto; Synthesis and characterization of tungstophosporic acid modified mesoporous silica nanoparticles with tuneable diameter and pore size distribution; Springer; Journal of Sol-Gel Science and Technology; 83; 2; 27-5-2017; 355-364  
dc.identifier.issn
0928-0707  
dc.identifier.uri
http://hdl.handle.net/11336/31680  
dc.description.abstract
Mesoporous silica nanoparticles (MSNX) were prepared in aqueous/organic phase using cetyltrimethylammonium bromide and polystyrene as organic templates. The morphology and crystalline phase of the products were characterized by scanning electron microcopy(SEM), transmission electron microscopy (TEM), X-ray diffraction, small angle X-ray scattering (SAXS), and N2 adsorption/desorption isotherm analysis.The OCT/H2O ratio influenced the pore size distribution, the morphology and size of thenanospheres obtained. TEM revealed that MSNX with ?blackberry-like structure? (MSN3,MSN4, MSN5, and MSN6 samples) were obtained using OCT/H2O ratios in the range 0.007-0.35. They present small (in the range 5-6 nm) and large (in the range 28-34 nm)mesopores. Large mesopores were mainly generated by polystyrene, and their volume contribution was clearly higher than in the MSN1 and MSN2 samples.The structure and morphology of MSN solids impregnated with TPA were similar to those of the mesoporous silica nanospheres used as support. In addition, the characterization of all the solids impregnated with TPA by FT-IR and 31P NMR indicated the presence of undegraded [PW12O40]3− and [H3-XPW12O40](3-X)− species interacting electrostatically with the Si-OH2+ groups, and by potentiometric titration the solids presented very strong acid sites.In summary, they are good candidates to be used in reactions catalyzed by acids, especially to obtain quinoxaline derivatives  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Springer  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Nanoparticles  
dc.subject
Silica  
dc.subject
Mesoporous Solids  
dc.subject
Tungstofosforic Acid  
dc.subject.classification
Otras Ciencias Químicas  
dc.subject.classification
Ciencias Químicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Synthesis and characterization of tungstophosporic acid modified mesoporous silica nanoparticles with tuneable diameter and pore size distribution  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2017-12-19T18:47:36Z  
dc.identifier.eissn
1573-4846  
dc.journal.volume
83  
dc.journal.number
2  
dc.journal.pagination
355-364  
dc.journal.pais
Alemania  
dc.journal.ciudad
Berlin  
dc.description.fil
Fil: Sosa, Alexis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina  
dc.description.fil
Fil: Gorsd, Marina Noelia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina  
dc.description.fil
Fil: Blanco, Mirta Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina  
dc.description.fil
Fil: Pizzio, Luis Rene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina  
dc.journal.title
Journal of Sol-Gel Science and Technology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/ 10.1007/s10971-017-4428-6  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10971-017-4428-6