Free-Standing Mesoporous Silica/Carbon Composite Films with Crystalline Silica Wall from Ethylene-Bridged Organosilane
作者： Sung Soo Park , Yuin Jung , Chunfeng Xue , Renchao Che , Dongyuan Zhao
DOI: 10.1021/CM901684M
关键词: Mesoporous organosilica 、 Chemical engineering 、 Cristobalite 、 Composite number 、 Mesoporous silica 、 Composite material 、 Mesoporous material 、 Pyrolysis 、 Alkali metal 、 Materials science 、 Carbon
摘要: Free-standing periodic mesoporous organosilica (PMO) films were grown at the interface of an ethylene-bridged and surfactant template via a self-assembly process. After pyrolysis PMO with moieties in pore walls under Ar flow temperatures ranging from 400 to 900 °C, free-standing silica/carbon composite obtained. The had highly ordered mesostructure hexagonal closed-packed arrangement channels running parallel surface. mesopore pyrolyzed above 700 °C presence alkali metal ions cristobalite structure walls. When temperature was between diameter, surface area, volume 18.2−30.5 A, 172−690 m2 g−1, 0.18−0.64 cm3 respectively.
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