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Facile and green preparation of magnetite/zeolite nanocomposites for energy application in a single-step procedure.
- Source :
-
Journal of Alloys & Compounds . Sep2017, Vol. 719, p218-226. 9p. - Publication Year :
- 2017
-
Abstract
- This paper presents a green, facile and rapid method to prepare magnetite/zeolite-nanocomposites (NCs) in one step procedure at ambient temperature. The powder X-ray diffraction (PXRD) pattern of iron oxide nanoparticles (NPs) with the sole zeolite showed the broadening of zeolite peaks attributed to the incorporation of Fe 3 O 4 . Field-emission scanning electron microscopy (FESEM) analysis depicted that the Fe 3 O 4 ‒NPs were formed on the surface of porous zeolite framework. Transmission electron microscopy (TEM) analysis displayed the Fe 3 O 4 nanoparticles (NPs) were mostly in spherical shape with a mean diameter and standard deviation of 2.40 ± 0.41 nm. The selected-area electron diffraction (SAED) pattern confirmed the presence of cubic Fe 3 O 4 phase. The vibrating sample magnetometer (VSM) results indicated the as-synthesized sample has a saturation magnetization of around 6.52 emu g −1 . The magnetite/zeolite-NCs can be considered as a low-cost alternative catalyst for oxygen reduction reaction (ORR) process. The electrochemical measurement showed that the performance of magnetite/zeolite-NCs towards the ORR increased as the scan rate increased from 20 mV s −1 to 500 mV s −1 . The ORR is a diffusion-controlled process in the alkaline medium. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 719
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 123528041
- Full Text :
- https://doi.org/10.1016/j.jallcom.2017.05.028