Optical studies of crystalline ZnO-SiO2 developed from pyrolysis of coconut husk

Citation

Anuar, Muhammad Fahmi and Yap, Wing Fen and Mohd Zaid, Mohd Hafiz and Sheh Omar, Nur Alia (2020) Optical studies of crystalline ZnO-SiO2 developed from pyrolysis of coconut husk. Materials Research Express, 7 (2020). pp. 1-6. ISSN 2053-1591

Abstract

In this paper, the ZnO–SiO2 was synthesized using ZnO nanopowders and SiO2 developed from coconut husk ash by using conventional solid state method. The ZnO–SiO2 crystal system was heat-treated and the properties was studied. The XRD results showed high intensity peaks due to its high crystallinity when sintered at high temperature. The morphological differences can also be observed through FESEM images as the heat-treated crystal system showed well-distinct boundaries. Meanwhile, the absorbance intensity decreased and shifted to the lower wavelength after heat-treated. The optical band gap value of the ZnO–SiO2 was 3.22 eV before treated and increased to 4.05 eV after heat treated. The presented results showed good properties of zinc silicate and it has a great potential as phosphors in optical application.

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Official URL or Download Paper: https://iopscience.iop.org/article/10.1088/2053-15...

Additional Metadata

Item Type:	Article
Divisions:	Faculty of Science Institute of Advanced Technology
DOI Number:	https://doi.org/10.1088/2053-1591/ab8a81
Publisher:	Institute of Physics Publishing
Keywords:	Optical; Coconut husk ash; XRD; Structural; Zinc silicate
Depositing User:	Mohamad Jefri Mohamed Fauzi
Date Deposited:	10 Jan 2022 07:19
Last Modified:	10 Jan 2022 07:19
Altmetrics:	http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1088/2053-1591/ab8a81
URI:	http://psasir.upm.edu.my/id/eprint/86990
Statistic Details:	View Download Statistic

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