Bellayer Séverine, Viau Lydie, Tebby Zoe, Toupance Thierry, Le Bideau Jean, Vioux André
University of Montpellier, Department of Chemistry, Institut Charles Gerhardt, cc 1701, F34095 Montpellier, France.
Dalton Trans. 2009 Feb 28(8):1307-13. doi: 10.1039/b814978j.
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.
通过溶胶-凝胶工艺，以双(2-甲基丁-2-氧基)二(戊-2,4-二酮基)锡作为前驱体，在各种离子液体([BMI][Br]、[BMI][TFSI]、[BMI][BF4])存在的情况下，制备了SnO₂半透明块状离子凝胶。差示扫描量热法、傅里叶变换红外光谱和傅里叶变换拉曼光谱证明了离子液体被限制在凝胶内部。离子液体能够被有效洗去，从而得到超微孔固体。在空气中于550℃对干燥后的块状物进行煅烧，得到了纳米多孔纳米晶锡石二氧化锡颗粒，其微晶尺寸约为8-12nm，平均孔径约为5nm。
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