【摘 要】
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In this report we demonstrate the synthesis of homogeneous metal-silicon mixed-oxide composite aerogels via a propylene oxide pre-reaction method, in which different colloidal particles together cross
【机 构】
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Shanghai Key Laboratory of Special Microstructure Materials and Technology, School of Physics Scienc
【出 处】
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2014中国溶胶-凝胶学术研讨会暨国际论坛
论文部分内容阅读
In this report we demonstrate the synthesis of homogeneous metal-silicon mixed-oxide composite aerogels via a propylene oxide pre-reaction method, in which different colloidal particles together crosslinked into uniform co-gelation frameworks, and silica acts as the major phase.Through pre-reaction and selective solvent system, the hydrolysis and condensation rate between two different precursors has been balanced efficiently, and uniform composite gel networks without large shrinkage after supercritical drying were generated.Interestingly, the doping mole ratio of metal to silicon (n(M)∶n(Si)) could be accurately controlled in the range from 1% to 20%.
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