Preparation of different manganese oxide structures via controlling the concentration and the type of the alkaline media
Journal Title: Asian Journal of Nanoscience and Materials - Year 2019, Vol 2, Issue 3
Abstract
Birnessite and manganite materials were prepared using a simple precipitation process in an alkaline medium. Potassium hydroxide and tetraethyl ammonium hydroxide (TEAH) used as the precipitating agents. Different techniques such as XRD, DSC, TGA, FT-IR, TEM and N2 adsorption analyses were employed to characterize the prepared samples. The results revealed that the formed phase in the prepared sample is dependent on the concentration of the precipitating agent. In addition, the XRD results showed the formation of various phases through controlling the concentration of the precipitating agent. Pure phase of birnessite produced in the high alkaline medium, and manganite (γ-MnOOH) at relatively low alkalinity. The samples prepared by using TEAH were well crystalline compared with the analogue one prepared by KOH. The obtained results elaborated the role of TEAH in directing the order of the particles during the preparation step.
Authors and Affiliations
Samer Said, Mary Riad, Sara Mikhail
Keywords
Related Articles
- EP ID EP580203
- DOI 10.26655/AJNANOMAT.2019.2.3.4
- Views 73
- Downloads 0
Curcumin-hybrid Nanoparticles in Drug Delivery System (Review)
Extensive studies on curcumin has improved that it has certain therapeutic role for different kinds of diseases such as cancer. Regardless of its positive features, its application is hampered by its low water solubility...
Biogenic synthesis of Palladium nanoparticles mediated by Artemisia abrotanum aqueous extract and its catalytic evaluation for Suzuki coupling reactions
A simple and biological method for the fabrication of palladium nanoparticles (Pd NPs) was developed, applying the non-toxic and sustainable natural extract from Artemisia abrotanum as the reducing, stabilizing and cappi...
Effect of stirring to produce ferric saccharide capsules with alginate coating
The present study has focused on the effect of stirring to produce ferric saccharide capsules with alginate coating applying the coacervation method so that we can obtain the best capsules for fortification of hydrated a...
Synthesis of γ-Fe2O3 Nanoparticles and Catalytic activity of Azide-Alkyne Cycloaddition Reactions
Iron nanoparticles (NPs), due to their interesting properties, low cost preparation and many potential applications in ferrofluids, magneto-optical, catalysis, drug delivery systems, magnetic resonance imaging, and biolo...
Highly effective synthesis of 3, 4-dihydropyrimidin-2 (1H)-ones using pyridinium-N-sulfonic acid bisulfate as a dual-functional catalyst
Acidic ionic liquid pyridinium-N-sulfonic acid bisulfate ([Py-SO3H][HSO4]) has effectively catalyzed the production of 3, 4-dihydropyrimidin-2 (1H)-ones via the condensation reaction of the arylaldehydes with β-ketoester...