Preparation method of hollow mesoporous silica nanospheres

Abstract

The invention discloses a preparation method of hollow mesoporous silica nanospheres and relates to a silica nanosphere. The preparation method comprises the following steps: adding the silica nanospheres into water, performing ultrasound treatment to get dispersion liquid of the silica nanospheres, then refluxing the dispersion liquid of the silica nanospheres, further centrifugating and collecting the silica nanospheres; dispersing the silica nanospheres in the water, adding cetyltrimethylammonium bromide and stirring to get the dispersion liquid; further adding NaOH, etching, standing for cooling, collecting sediment, cleaning and airing to get white powder; and removing a cationic surfactant in the white powder to get the hollow mesoporous silica nanospheres with greater aperture.

Description

technical field

[0001] The invention relates to a silica nanosphere, in particular to a method for preparing a hollow mesoporous silica nanosphere. Background technique

[0002] Since Beck and Kresge, the scientists of Mobil Corporation, reported for the first time in 1992 that cationic surfactants were used as templates in alkaline media, the M41s mesoporous molecular sieve series materials were synthesized in one step through hydrothermal crystallization of silicate gels (1 , C.T.Kresge, M.E.Leonowicz, W.J.Roth, J.C.Vartuli, J.S.Beck, Nature, 1992, 359, 710-712.), due to its unique structure, properties and good application prospects, mesoporous materials are widely used in basic research and practical application has received widespread attention. With the in-depth research on mesoporous materials, mesoporous nanomaterials with hollow structure have low density and high specific surface area, which are widely used in catalysis, low-density structural materials, drug carr...

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