Adsorption of hidrogen peroxide on the surface of silica - titania mixed oxide obtained by the sol-gel processing method
Salvato in:
| Autore principale: | |
|---|---|
| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidade Estadual Paulista Júlio de Mesquita Filho
2007
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866814233855918080 |
|---|---|
| author | J. E. Gonçalves |
| author_facet | J. E. Gonçalves |
| contents | Adsorption of hidrogen peroxide on the surface of silica - titania mixed oxide obtained by the sol-gel processing method J. E. Gonçalves Y. Gushikem U.P. R. Filho D.W. Franco Química sol gel silica titania porous material This work describes the sol-gel mixed oxide SiO2/TiO2 property, ST, as prepared, and submittedto heat treatment a 773 K, STC. SEM and EDS images show, within magnification used, a uniformdistribution of the TiO2 particles in SiO2/TiO2 matrix. Both, ST and STC adsorb hydrogen peroxide on thesurface and through EPR and UV-Vis diffuse reflectance spectra, it was possible to conclude that thespecies on the surface is the peroxide molecule attached to the Lewis acid site of titanium particlesurface, α Ti(H2O2)+. As the material is very porous, presumably the hydrogen peroxide molecule isconfined in the matrix pores on the surface, a reason why the adsorbed species presents an exceptionallong lived stability. 2007 artículo científico 0100-4670 https://www.redalyc.org/articulo.oa?id=42932207 en http://www.redalyc.org/revista.oa?id=429 Eclética Química application/pdf Universidade Estadual Paulista Júlio de Mesquita Filho Eclética Química (Brasil) Num.2 Vol.32 |
| format | Artículo científico |
| id | redalyc_42932207 |
| language | en |
| publishDate | 2007 |
| publisher | Universidade Estadual Paulista Júlio de Mesquita Filho |
| spellingShingle | Adsorption of hidrogen peroxide on the surface of silica - titania mixed oxide obtained by the sol-gel processing method J. E. Gonçalves Química sol gel silica titania porous material Adsorption of hidrogen peroxide on the surface of silica - titania mixed oxide obtained by the sol-gel processing method J. E. Gonçalves Y. Gushikem U.P. R. Filho D.W. Franco Química sol gel silica titania porous material This work describes the sol-gel mixed oxide SiO2/TiO2 property, ST, as prepared, and submittedto heat treatment a 773 K, STC. SEM and EDS images show, within magnification used, a uniformdistribution of the TiO2 particles in SiO2/TiO2 matrix. Both, ST and STC adsorb hydrogen peroxide on thesurface and through EPR and UV-Vis diffuse reflectance spectra, it was possible to conclude that thespecies on the surface is the peroxide molecule attached to the Lewis acid site of titanium particlesurface, α Ti(H2O2)+. As the material is very porous, presumably the hydrogen peroxide molecule isconfined in the matrix pores on the surface, a reason why the adsorbed species presents an exceptionallong lived stability. 2007 artículo científico 0100-4670 https://www.redalyc.org/articulo.oa?id=42932207 en http://www.redalyc.org/revista.oa?id=429 Eclética Química application/pdf Universidade Estadual Paulista Júlio de Mesquita Filho Eclética Química (Brasil) Num.2 Vol.32 |
| title | Adsorption of hidrogen peroxide on the surface of silica - titania mixed oxide obtained by the sol-gel processing method |
| topic | Química sol gel silica titania porous material |
| url | https://www.redalyc.org/articulo.oa?id=42932207 |