Combustion synthesis of porous MgO and its adsorption properties

International Journal of Industrial Chemistry

دوره 10، شماره 1، بهار 2019، صفحه 89-96  

نوع مقاله: research article

شناسه دیجیتال (DOI): https://doi.org/10.1007/s40090-019-0174-7

نویسنده

Songnan Li

Modern Experiment Center, Harbin Normal University, Harbin, 150025, People’s Republic of China

چکیده

Porous magnesium oxide was synthesized by a combustion method, with Mg(NO₃)₂, ethylene glycol and deionized water as reactants, and characterized by X-ray diffraction, infrared spectroscopy, scanning electron microscopy, transmission electron microscopy and nitrogen sorption/desorption. The results showed that the as-prepared porous magnesium oxide has the multi-scale porous size with a large BET surface area of 203.8 m² g⁻¹. Magnesium oxides synthesized with other reactants have rod-shaped and granular morphologies, and their BET surface areas are 17.6 and 3.4 m² g⁻¹, respectively. Compared to the magnesium oxide with the low specific surface area, porous magnesium oxide exhibited higher adsorption efficiency with a maximum adsorption capacity of approximately 1088 mg g⁻¹ in removing Congo red. The as-synthesized porous magnesium oxide could be used as an efficient adsorption material in Congo red removal from the wastewater.

کلیدواژه‌ها

MgO · Combustion synthesis · Porous material · Water treatment