Ca(OH)2 nano-pods: investigation on the effect of solvent ratio on morphology and CO2 adsorption capacity

Mohd Daud, Farah Diana and Vignesh, Kumaravel and Sreekantan, Srimala and Mohamed, Abdul Rahman and Misook, Kang and Byeong, Sub Kwak (2016) Ca(OH)2 nano-pods: investigation on the effect of solvent ratio on morphology and CO2 adsorption capacity. RSC Advances, 6 (42). pp. 36031-36038. ISSN 2046-2069

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Abstract

Ca(OH)2 nano-pods were synthesized through a precipitation method. Solvents such as ethanol/deionized water (DIW) and dimethylformamide (DMF)/deionized water (DIW) were used at different volume ratios to synthesize the samples. Various characterization techniques such as X-ray diffraction (XRD), filed emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM) and BET surface area analysis were employed to investigate the role of solvent on the crystallinity, morphology and surface area of Ca(OH)2. The solvent mixtures with a high volume of organic solvent (ethanol or DMF) acted as good capping agents to suppress the growth of Ca(OH)2 in the (1010) direction and induce anisotropic growth along the (0001) direction. A uniform pod like morphology was observed for the Ca(OH)2 sorbent synthesized using ethanol/DIW with a volume ratio of 78 ml/02 ml. Besides, the sorbents synthesized using ethanol/DIW showed good CO2 adsorption capacity and high surface area when compared to that of DMF/DIW.

Item Type:	Article (Journal)
Additional Information:	7338/52961
Uncontrolled Keywords:	Ca(OH)2, nano-pods, solvent ratio, morphology
Subjects:	T Technology > TP Chemical technology T Technology > TP Chemical technology > TP155 Chemical engineering T Technology > TP Chemical technology > TP785 Clay industries. Ceramics. Glass. Cement industries
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	DR FARAH DIANA MOHD DAUD
Date Deposited:	29 Nov 2016 13:50
Last Modified:	03 Aug 2017 16:49
URI:	http://irep.iium.edu.my/id/eprint/52961

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