Journal
JOURNAL OF CO2 UTILIZATION
Volume 51, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jcou.2021.101652
Keywords
Magnesium oxide; Microsphere; Nanostructured; Mesoporous; CO2 sorption
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A new method was reported to synthesize nanostructured magnesium oxide microspheres with high surface area and pore volume, which showed remarkable performance in carbon dioxide sorption.
A new method to synthesize nanostructured magnesium oxide (MgO) microspheres with high surface area and bulk density was reported based on thermal decomposition of spherical magnesium ethoxide prepared by the controlled particle growth method. Various characterizations, including scanning electron microscopy, transmission electron microscopy, powder X-ray diffraction, attenuated total reflection infrared spectroscopy, and N-2 adsorption/desorption, were performed. The results revealed the successful conversion of the precursor into MgO while keeping macroscopic characteristics of the original precursor. Due to the agglomeration of nano-sized MgO as building blocks, the synthesized MgO microspheres possessed a mesoporous structure with tunable surface area (up to 227 m(2) g(-1)) and pore volume (up to 0.791 cm(3) g(-1)). With the high surface area and pore volume, MgO microspheres showed a remarkable performance in carbon dioxide sorption.
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