Radiation-Induced Dehydration of Na2SO4.10H2O as Energy Storage Material

Document Type : Original Article

Authors

1 Assiut university

2 Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt

3 Inorganic chemistry, science, assiut university, assiut, Egypt

4 National Center for Radiation Research and Technology (NCRRT), Cairo, Egypt

Abstract

This study focus on the effects induced by gamma-(γ) ray and electron beam (EB) irradiation on the thermal behavior, structure, and morphology of 〖Na〗_2 SO_4.10H_2 O.Thermal dehydration of un-irradiated, gamma (γ), and electron beam (EB)-irradiated samples of 〖Na〗_2 SO_4.10H_2 O(Glauber’s salt) was studied in the nitrogen atmosphere in the temperature range of 22 – 300℃. The TG curve displays a total mass loss percentage of ≅ 55% corresponding to the removal of ten crystalline water molecules. Gamma and electron beam EB irradiation had different effects on the thermal behavior of 〖Na〗_2 SO_4.10H_2 O resulting in complete and partial dehydration of water molecules during crystallization, respectively. FT-IR spectra revealed that the characteristic vibration bands of hydrogen bonding of water molecules and SO_4^(-2) anion of 〖Na〗_2 SO_4.10H_2 O irradiated by EB were shifted to lower wavenumbers compared to the corresponding bands of pristine and gamma irradiated samples. Electron beam-induced changes in the crystal structure of 〖Na〗_2 SO_4.10H_2 O leads to the formation of a new phase of orthorhombic system with space group SG (pmmm) a = 25.0426, b = 4.645, and c = 3.878Å.

Keywords

Files

Share

How to cite

Statistics