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- W2378613518 abstract "Using the cationic surfactant-cetyltrimethylammonium bromide(CTAB)as template,tetraethyl orthosilicate(TEOS)as silica source and nonionic sufactant-triblock copolymer F127 asdispersant,the monodisperse nanosized mesoporous siliceous MCM-41 was prepared by room temper-atural synthesis method in basic media.The samples were characterized by techniques such as XRD,TEM.HRTEM,SEM,IR and N_2 physisorption.In addition, the influences of different molar ratiosof F127 to CTAB on mesoporous crystalline structure,surface structure,pore size distribution andthe dispersity of nanosized mesoporous siliceous MCM-41 were also systemically studied.The resultsshow that a suitable amount of F127 can greatly improve the ordered structure of pore array, while anexcessive amount of F127 will destroy the ordered structure.When the molar ratio of F127 to CTABwas ranged from 0.04 to 0.08,the synthesized samples were nanoparticle, monodispersed,single-poredistributed, huge pore volume and highly ordered mesoporous structure." @default.
- W2378613518 created "2016-06-24" @default.
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- W2378613518 date "2004-01-01" @default.
- W2378613518 modified "2023-09-23" @default.
- W2378613518 title "Preparation of monodisperse nanosized mesoporous silica" @default.
- W2378613518 hasPublicationYear "2004" @default.
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