Preparation and Physicochemical Properties of Nano porous Mgo Using Micro Emulsion Technique

Proceedings of The 2nd International Conference on Research in Science, Engineering, and Technology

Year: 2019

DOI: https://www.doi.org/10.33422/2nd.icrset.2019.11.782

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Preparation and Physicochemical Properties of Nanoporous Mgo Using Micro Emulsion Technique

Atthaphon Maneedaeng, Panuwat Lawtae, Arissara Boonma and Wasupol Buathonglang

ABSTRACT: 

Various nanoscaled pore diameters of MgO have been prepared via surfactant-1-butanol-isooctane-nitrate-oxalate salt microemulsion. The surfactants of AOT and Dehydol LS3 TH were used in this work in order to compare the difference in porous structures. Physicochemical properties of the prepared nanoscaled pore diameters of MgO were characterized by Zetasizer, X-ray diffraction, UV-Vis Spectrometer, Scanning Electron Microscope, and Brunauer–Emmett–Teller (BET). The experimental results showed that average particle size of MgO prepared in microemulsion with AOT was smaller than in Dehydol LS3 TH, and higher calcined temperature resulted in smaller average particle size. The XRD patterns indicated that all surfactants were removed during calcination and all MgO produced by this technique was pure. The maximum absorptions were determined at 215-218 nm with the electron band gaps of 5.70-5.81 eV. The SEM images showed that the surfactants used resulted in different morphology and nanoporous structure. The results from BET revealed that both anionic and nonionic surfactants effected on N₂ adsorption and desorption. The differences in results could be due to the reverse micellization in microemulsion technique. Besides, the difference in calcined temperature of 600-800 °C resulted in decreasing the BET surface area and pore size when temperature increased.

Keywords: Magnesium Oxide; Reverse Micellar System; Microporous Materials; Adsorption.