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Comparative Study of MgO Nanopowders Prepared by Different Chemical Methods.

Authors :
Todan, Ligia
Predoană, Luminița
Petcu, Gabriela
Preda, Silviu
Culiță, Daniela Cristina
Băran, Adriana
Trușcă, Roxana-Doina
Surdu, Vasile-Adrian
Vasile, Bogdan Ștefan
Ianculescu, Adelina-Carmen
Source :
Gels (2310-2861); Aug2023, Vol. 9 Issue 8, p624, 19p
Publication Year :
2023

Abstract

Magnesium oxide (MgO) was synthesized by three different methods: the sol–gel (SG), microwave-assisted sol–gel (MW), and hydrothermal (HT) methods for comparing the influence of the preparation conditions on the properties of the products. The powders were annealed at 450 °C. The samples were characterized by X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy (TEM/HRTEM), selected area electron diffraction (SAED), energy-dispersive X-ray spectroscopy (EDX), BET specific surface area and porosity, photoluminescence, and UV–Vis spectroscopy. The samples consisted mainly of periclase as a crystalline phase, and the MW and HT preparation methods generated particles with higher specific surface areas. The powders had less-defined morphologies and high levels of aggregation. The optical band gaps of the samples were determined from UV DRS, and the photocatalytic activities of the magnesium oxides obtained by the three methods towards the degradation of methyl orange (MO) under UV light irradiation was evaluated. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
23102861
Volume :
9
Issue :
8
Database :
Complementary Index
Journal :
Gels (2310-2861)
Publication Type :
Academic Journal
Accession number :
170739747
Full Text :
https://doi.org/10.3390/gels9080624