文献类型：专利

英文题名：Preparing mesoporous silica nanoparticles of novel bell structure, by soaking organic-inorganic hybrid silica nanoparticles precursors in ethanol and concentrated hydrochloric acid and isolating silica nanoparticles after extraction

作者：LI Y;NIU D;JIANG Y;LI N;PAN S

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN107149683-A

申请日：2017-05-09

公开日：2017-09-12

语种：英文

收录：DERWENT

摘要：NOVELTY - Method for preparing mesoporous silica nanoparticles of novel bell structure, involves dissolving anionic block copolymer polystyrene-b-polyacrylic acid in tetrahydrofuran, dissolving cetyltrimethylammonium bromide in water, adding aqueous ammonia, dissolving ethyl orthosilicate in ethanol, adding tetrahydrofuran solution, soaking organic-inorganic hybrid silica nanoparticles precursors in mixed solution of ethanol and concentrated hydrochloric acid, and isolating organic-inorganic hybrid mesoporous silica nanoparticles after extraction. USE - The method is useful for preparing mesoporous silica nanoparticles of novel bell structure (claimed). ADVANTAGE - The method is simple to perform. DETAILED DESCRIPTION - Method for preparing mesoporous silica nanoparticles of novel bell structure, involves dissolving anionic block copolymer polystyrene-b-polyacrylic acid in tetrahydrofuran to form tetrahydrofuran solution of block copolymer, dissolving cetyltrimethylammonium bromide in water, adding aqueous ammonia to form surface aqueous solution of active agent, dissolving ethyl orthosilicate in ethanol to form alcohol solution of inorganic silicon source, adding tetrahydrofuran solution of the block copolymer into aqueous ammonia solution of the surfactant under stirring to form mixed solution, adding the mixed solution into the alcohol solution of the inorganic silicon source to separate organic-inorganic hybrid silica nanoparticle precursor, soaking organic-inorganic hybrid silica nanoparticles precursors in mixed solution of ethanol and concentrated hydrochloric acid, and isolating organic-inorganic hybrid mesoporous silica nanoparticles with bell structure after extraction.