Immobilization of ionic liquids in translucent tin dioxide monoliths by sol-gel processing.
SnO2 translucent monolith ionogels were obtained by a sol-gel processing using bis(2-methylbutan-2-oxy)di(pentan-2,4-dionato)tin as a precursor in the presence of various ionic liquids: [BMI][Br], [BMI][TFSI], [BMI][BF4]. The confinement of ionic liquids within the gels was evidenced by Differential Scanning Calorimetry, FTIR and FT-Raman spectroscopy. The ionic liquids could be efficiently washed off, which resulted in supermicroporous solids. Calcination in air at 550 degrees C of the dried monoliths resulted in nanoporous nanocrystalline cassiterite tin dioxide particles with crystallite sizes of about 8-12 nm and mean pore sizes around 5 nm.
Bellayer
Séverine
S
University of Montpellier, Department of Chemistry, Institut Charles Gerhardt, cc 1701, F34095 Montpellier, France.
Viau
Lydie
L
Tebby
Zoe
Z
Toupance
Thierry
T
Le Bideau
Jean
J
Vioux
André
A