A facile synthesis of grainy rod-like porous MgO

Porous magnesia (MgO) with grainy rod-like microstructure was synthesized by hydrothermal process at 180°C/5h in the presence of urea. The as-prepared particles crystallized as Mg5(CO3)4(OH)2·5H2O which transformed to MgO phase at 600–700°C. The BET surface area, total pore volume and average pore d...

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Bibliographic Details
Published in:Materials letters 2015-11, Vol.158, p.190-193
Main Authors: Hazra Chowdhury, Arpita, Hazra Chowdhury, Ipsita, Kanti Naskar, Milan
Format: Article
Language:English
Subjects:
Crystal structure
Crystallization
Design engineering
Hydrothermal
Magnesium oxide
MgO
Microstructure
Nanostructure
Porosity
Porous materials
Surface area
Thermal analysis
Ureas
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Summary:Porous magnesia (MgO) with grainy rod-like microstructure was synthesized by hydrothermal process at 180°C/5h in the presence of urea. The as-prepared particles crystallized as Mg5(CO3)4(OH)2·5H2O which transformed to MgO phase at 600–700°C. The BET surface area, total pore volume and average pore diameter of 600°C-treated sample were found to be 46m2g−1, 0.34cm3g−1 and 30.4nm, respectively. Microstructural analysis indicated grainy rod-like microstructure (aspect ratio 10–30) in which the nanograin-like particles (20–50nm) were assembled like architectural design. [Display omitted] •Grainy rod-like porous MgO was synthesized via template-free method.•The BET surface area was found to be 46m2g−1.•Nanograin-like particles (20–50nm) were assembled like architectural design.•Urea has a significant role in the formation of grainy rod with porous structure.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2015.05.116