Journal
CERAMICS INTERNATIONAL
Volume 43, Issue 1, Pages 192-196Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.09.133
Keywords
Sol-gel processes; Calcination; SiO2; Nanoparticles
Categories
Funding
- National Natural Science Foundation of China [51272098, 51551201]
Ask authors/readers for more resources
Disperse amorphous SiO2 nanoparticles are essential to the preparation of SiO2 nanoglass. In our present work, disperse fine amorphous SiO2 nanoparticles with a narrow size distribution were synthesized by a sol-gel method and subsequent calcination. In the synthesis, polyethylene glycol 1000 (PEG 1000) was used as surfactant, tetraethyl orthosilicate (TEOS) as silicon source, and ammonia as catalyst. The size and morphology of amorphous SiO2 nanoparticles were tuned by adjusting the amount of PEG 1000. At 0.1 g PEG 1000, large SiO2 nanoparticles with an average size of 35 nm most of which are agglomerated and catenulate in shape were produced. At 0.05 and 0.0125 g, SiO2 nanoparticles with an average size of 18 nm which are nearly disperse with weak agglomeration and irregular in shape were obtained. Under the optimum condition of 0.025 g PEG 1000 and after calcination at 800 degrees C for 10 h, SiO2 nanoparticles prepared are completely disperse without any agglomeration, fine, and equiaxed in shape and have an average size of 9 nm and a size distribution of 4-18 nm.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available