Fabrication of Ca(OH)2 nanostructures by facile solution – based synthesis at various reaction temperatures as CO2 adsorbent
Calcium hydroxides (Ca(OH)2) nanostructures have been fabricated through simple facile solution based synthesis at different temperatures 35, 45 and 55°C repectively. Ethanol was utilized as a medium for reaction. The synthesized powder was characterized by Field Emission Scanning Electron Micros...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications Ltd.
2013
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/46394/ http://irep.iium.edu.my/46394/ http://irep.iium.edu.my/46394/ http://irep.iium.edu.my/46394/1/Fabrication_of_Ca%28OH%292_Nanostructures_by_Facile_Solution_%E2%80%93_Based_synthesis_at_various_reaction_temperatures_as_CO2_adsorbent.pdf |
| Summary: | Calcium hydroxides (Ca(OH)2) nanostructures have been fabricated through simple facile
solution based synthesis at different temperatures 35, 45 and 55°C repectively. Ethanol was utilized
as a medium for reaction. The synthesized powder was characterized by Field Emission Scanning
Electron Microscope (FESEM SUPRA 35VP ZEISS), Fourier transform infrared (FTIR Perkin
Elmer Spectrum One Spectrophotometer) and X-ray diffraction (XRD). Based on XRD analysis, the
synthesis samples exhibited crystal hexagonal phase of Ca(OH)2. The crystallite size for powders
prepared was between 17 nm to 31 nm. Short nanorod like structures was successfully obtained in
80 ml ethanol solution for entire temperatures. However, the length and diameter decreased with
increased the reaction temperatures. Short nanorod synthesized at 55°C has small diameters and
length compared at 35°C. Carbon dioxide (CO2) adsorption for synthesized powders was studied
by simultaneous thermal analyzer (STA). Ca(OH)2 prepared at 35°C and 45°C in 80 ml ethanol
showed CO2 adsorption capacity about 9.3 mmol/g and 9.7 mmol/g respectively. |
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