Structural, morphological, optical and electrical characterization of gahnite ferroan nano composite derived from fly ash silica and ZnO Mixture

Panda, S. S., Tripathy, H. P. ORCID: https://orcid.org/0000-0003-0129-2642, Pattanaik, P. ORCID: https://orcid.org/0000-0002-0042-6672, Mishra, D. K. ORCID: https://orcid.org/0000-0002-5648-8362, Kamilla, S. K., Khandual, A. ORCID: https://orcid.org/0000-0002-9357-9749, Holderbaum, W. ORCID: https://orcid.org/0000-0002-1677-9624, Sherwood, R. ORCID: https://orcid.org/0000-0002-8975-5623, Hawkins, G. ORCID: https://orcid.org/0000-0003-3604-5713 and Masakapalli, S. K. ORCID: https://orcid.org/0000-0003-1988-5569 (2022) Structural, morphological, optical and electrical characterization of gahnite ferroan nano composite derived from fly ash silica and ZnO Mixture. Materials, 15 (4). 1388. ISSN 1996-1944 doi: 10.3390/ma15041388

Abstract/Summary

The synthesis of a high value-added product, gahnite ferroan nano composite, from a mixture of fly ash silica and ZnO is a low-cost and non-expensive technique. The XRD pattern clearly reveals the synthesized product from fly ash after leaching is a product of high-purity gahnite ferroan composite. The grains are mostly cubical in shape. The optical band gap of powdered gahnite ferroan nano composite is 3.37 eV, which acts as a UV protector. However, the bulk sample shows that the 500 to 700 nm wavelength of visible light is absorbed, and UV light is allowed to pass through. So, the bulk sample acts as a band pass filter of UV light which can be used in many optical applications for conducting UV-irradiation activity. Dielectric permittivity and dielectric loss increase with a rise in temperature. The increase in the ac conductivity at higher temperatures denotes the negative temperature coefficient resistance (NTCR) behavior of the material.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/103377
Identification Number/DOI	10.3390/ma15041388
Refereed	Yes
Divisions	Life Sciences > School of Biological Sciences > Department of Bio-Engineering
Uncontrolled Keywords	fly ash, ZnO, gahnite ferroan, band pass filter, NTCR
Publisher	MDPI
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