聚乙烯醇辅助制备SBA-15微球  

PVA-assisted preparation of SBA-15 microspheres

作　　者：王伟[1] 李东燕 姜睿泓 孔星璇 Wang Wei;Li Dongyan;Jiang Euihong;Kong Xingxuan(Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education),Northeastern University,Shenyang 110819,China;School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学材料各向异性和织构教育部重点实验室,沈阳110819 [2]东北大学材料科学与工程学院,沈阳110819

出　　处：《材料与冶金学报》2018年第3期211-215,共5页Journal of Materials and Metallurgy

基　　金：国家重点研发计划(2017YFB0310300);国家自然科学基金(21471026);教育部中央高校基本科研业务费(N160204006)

摘　　要：SBA-15型介孔二氧化硅(Si O2)是一种重要的具有较大介孔孔径的介孔材料,其中球形SBA-15在色谱分离、药物载体等领域具有重要的应用前景.本文报道了一种以聚乙烯醇(PVA)为添加剂、基于经典正硅酸四乙酯(TEOS)/P123/HCl (aq.)的路径,实现了SBA-15微球的简便制备.所得SBA-15微球具有长程有序的二维六方介孔结构,其介孔孔径为8. 8 nm,比表面积634 m2·g-1和孔体积0. 66 cm3·g-1.本工作还初步考察了包括PVA和不同的合成步骤等对SBA-15微球制备的影响.本法为SBA-15微球的制备提供了一种新的路径.This work reports a simple method to prepare SBA-15 microspheres using poly(vinyl alcohol)(PVA)as solo additive via classic TEOS/P123/HCl templating system.Both spherical particle morphology and long-range 2D-hexagonally ordered mesostructures can be obtained.Micron-sized SBA-15 microspheres(12.2μm)show mesopore size of 8.8 nm,surface area of 634 m 2·g-1 and pore volume of 0.66 cm 3·g-1.The roles of certain key factors to this preparative protocol,including PVA and synthetic conditions,are preliminarily studied.This method thus represents a novel and facile pathway to the preparation of SBA-15 microspheres.

关 键 词：SBA-15 微球 介孔二氧化硅 聚乙烯醇 

分 类 号：TF831-55[冶金工程—有色金属冶金]