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发布时间：2019-03-11

论文类型：会议论文

发表时间：2016-11-13

收录刊物：EI

卷号：2

页面范围：472-480

摘要：Highly dispersed Cu nanostructures were synthesized within mesoporous silica in supercritical CO2using inorganic Cu precursors. Co-solvent was found to have significant influence on the metal loading and the nanostructure morphologies of the nanocomposites. Although the inorganic precursor has large solubility in ethanol, 1, 3 propylene glycol, n-butyl alcohol and methanol, only big nanoparticles outside the nanochannels were obtained when the first three co-solvents were used, while zero metal loading was obtained when methanol was used as co-solvent. However, when ethylene glycol or the mixture of ethylene glycol and water were used as co-solvents, large amounts of short nanotubes were found inside the nanochannels with large metal loading. It indicates that the role of the co-solvent may have many aspects, such as enhancement of the precursor dissolution, change of the interaction between the precursor and the substrates and so on.