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Morphology control of ordered supermicroporous silicas
- Source :
- Ceramics International. 45:16803-16808
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- A feasible method has been developed for the morphology control of ordered supermicroporous silicas by adopting a kind of rosin-based surfactant as the templating agent. By adjusting the molar ratio of sodium silicate (SS) and ethyl acetate (EA), the morphologies of the materials can be changed from hollow sphere to hollow tube, and solid rod, while the degree of ordering of the samples showed a trend of firstly increasing and then decreasing. When the molar ratio of SS/EA was 0.38, an ordered supermicroporous silica with a hollow tubular morphology was obtained. The material had a surface area of 645.5 m2/g, a pore volume of 0.3 cm3/g, and a pore size distribution centered at 1.8 nm. When the molar ratio of SS/EA was increased to 0.46, the resulting sample exhibited a solid-rod morphology with a highly ordered hexagonal supermicroporous structure. This material had a large surface area of 1478.1 m2/g, a high pore volume of 0.7 cm3/g, and a uniform pore size distribution centered at 2.0 nm.
- Subjects :
- 010302 applied physics
Pore size
Materials science
Morphology (linguistics)
Process Chemistry and Technology
Ethyl acetate
Rosin
Sodium silicate
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Morphology control
chemistry.chemical_compound
Volume (thermodynamics)
chemistry
Chemical engineering
Pulmonary surfactant
0103 physical sciences
Materials Chemistry
Ceramics and Composites
medicine
0210 nano-technology
medicine.drug
Subjects
Details
- ISSN :
- 02728842
- Volume :
- 45
- Database :
- OpenAIRE
- Journal :
- Ceramics International
- Accession number :
- edsair.doi...........3c0344f23701f69098bb79937cce4f76