Small-angle scattering investigation of silica xerogels and sonogels prepared with ionic liquid pyridinium tetrafluoroborate | Zendy

László Almásy | Zendy; Ana-Maria Putz | Zendy; Adél Len | Zendy; Josef Pleštil | Zendy; Cecilia Savii | Zendy

Open Access

Small-angle scattering investigation of silica xerogels and sonogels prepared with ionic liquid pyridinium tetrafluoroborate

Author(s) -

László Almásy,

Ana-Maria Putz,

Adél Len,

Josef Pleštil,

Cecilia Savii

Publication year - 2017

Publication title -

processing and application of ceramics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.326

H-Index - 15

eISSN - 2406-1034

pISSN - 1820-6131

DOI - 10.2298/pac1703229a

Subject(s) - ionic liquid , tetrafluoroborate , small angle x ray scattering , alkoxide , materials science , mesoporous silica , sol gel , pyridinium , chemical engineering , microstructure , particle size , small angle neutron scattering , mesoporous material , inorganic chemistry , scattering , organic chemistry , neutron scattering , chemistry , nanotechnology , composite material , catalysis , optics , physics , engineering

Silica matrices were prepared via acid catalysed sol-gel processing augmented with sonocatalysis. As silica precursors, a mixture of tetra-functionalized alkoxide (TMOS) and three-functionalized alkoxide methyl-trimethoxysilane (MTMS) were employed. Ionic liquid N-butyl-3-methylpyridinium tetrafluoroborate ([bmPy][BF4]), was used in various proportions, aiming to catalyse the sol-gel reactions, and to influence the mesoporous silica materials properties, serving as pore template. Small-angle neutron (SANS) and small-angle X-ray scattering (SAXS) techniques were used to explore the xerogels and sonogels microstructure evolution as a function of the IL/Si molar ratio. The results show a strong increase of the primary particle size under the influence of the ionic liquid. Ultrasonic agitation leads to further size increase by ca. 10%

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research