A facile and general fabrication method for organic silica hollow spheres and their excellent adsorption properties for heavy metal ions

被引:73
作者
Hu, Jing [1 ,2 ,3 ]
Wang, Xuge [1 ]
Liu, Liqin [1 ]
Wu, Limin [2 ,3 ]
机构
[1] Shanghai Inst Technol, Sch Perfume & Aroma Technol, Shanghai 201418, Peoples R China
[2] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China
[3] Fudan Univ, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
PERIODIC MESOPOROUS ORGANOSILICA; RECHARGEABLE BATTERIES; TEMPLATING SYNTHESIS; AQUEOUS-SOLUTION; MICROSPHERES; NANOSPHERES; SHELL; REMOVAL; PARTICLES; THICKNESS;
D O I
10.1039/c4ta03856h
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
This paper presents a facile and general method for fabrication of organic silica hollow spheres by co-hydrolysis and condensation reactions of TEOS and other silane coupling agents under the catalysis of ammonia. Silane coupling agents were first pre-hydrolyzed to form micelles. When TEOS was added, a sol-gel reaction takes place between TEOS and the Si-OH and methoxy groups, at the surfaces of the micelles to form porous silica shells, producing organic silica hollow spheres. Taking vinyl silica hollow spheres as an example, the as-obtained hollow spheres exhibited considerably high adsorption properties for Pb2+ and other heavy metal ions.
引用
收藏
页码:19771 / 19777
页数:7
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