Synthesis of porous silica structures with hollow interiors by templating nanosized calcium carbonate

被引:62
作者
Chen, JF [1 ]
Wang, JX [1 ]
Liu, RJ [1 ]
Shao, L [1 ]
Wen, LX [1 ]
机构
[1] Beijing Univ Chem Technol, Minist Educ High Grav Engn & Technol, Res Ctr, Beijing 100029, Peoples R China
基金
中国国家自然科学基金;
关键词
nanosized calcium carbonate; shape control; hollow silica; core-shell structure;
D O I
10.1016/j.inoche.2004.01.003
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Shape-controlled porous silica structures with hollow interiors were synthesized by using CaCO3 nanoparticles with the corresponding morphologies and sizes as the inorganic templates. Through the hydrolysis of sodium silicate, a continuous coating Of SiO2 was deposited over the surface of CaCo3 cores to form core-shell structures. Hollow silica structures were finally obtained after calcining process and dissolving CaCO3 in HCl dilute solution. The as-prepared hollow products were characterized with TEM, SEM, EDS, BET, and FT-IR. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:447 / 449
页数:3
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