Synthesis of sustainable binary calcium monosilicate ceramics from bio-waste: effect of sintering temperature on microstructure and electrical properties
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Universiti Malaysia Perlis (UniMAP)
2023
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my.unimap-781212023-03-10T03:45:12Z Synthesis of sustainable binary calcium monosilicate ceramics from bio-waste: effect of sintering temperature on microstructure and electrical properties Khor, S. F. N. H., Jakfar B., Johar N. M., S. Adzali S. N. H., Mohd. Yunus Cheng, E. M. E. Z., M. Tarmizi Khor, S. F. Z., A. Talib sfkhor@unimap.edu.my Centre of Excellence for Renewable Energy (CERE), Universiti Malaysia Perlis (UniMAP) Faculty of Electrical Engineering & Technology, Universiti Malaysia Perlis (UniMAP) Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis (UniMAP) Advanced Communication Engineering, Centre of Excellence (ACE), Universiti Malaysia Perlis (UniMAP) Faculty of Electronic Engineering & Technology, Universiti Malaysia Perlis (UniMAP) Centre of Foundation Studies for Agricultural Science, Universiti Putra Malaysia (UPM) Department of Physics, College of Natural Sciences, Jeonbuk National University 567, Republic of Korea Calcium monosilicate Sintering Electrical conductivity Impedance Link to publisher's homepage at http://ijneam.unimap.edu.my/ This study was conducted to synthesise calcium monosilicate ceramics using rice husks and raw eggshells and investigated the effect of sintering temperature on the physical, microstructure and electrical properties of the final product. The high content of calcium and silicon in eggshells and rice husks, respectively promote the use of waste materials in the production of calcium monosilicates by mixing in a molar ratio 1CaO:1SiO2 and fired at different sintering temperatures for 2 hours with a heating rate of 10°C/min. A good correlation between sintering temperature, structural, microstructure, and electrical properties of calcium silicate was observed. The structural and morphological evolutions were characterised by X-ray diffraction (XRD) and scanning electron microscopy (SEM) equipped with electron dispersive X-ray analysis (EDX). XRD analysis showed that the main crystalline phases of synthesised calcium monosilicate are pseudowollastonite (ICSD 98- 005-2598) at 1250°C, and the phases of SiO2 also exist in different types of minerals. Besides, a small amount of larnite, Ca2SiO4 was traced at 1100°C and 1200°C. Fourier Transforms Infrared (FTIR) spectra showed the presence of characteristic functional groups in the precursor powder. In Nyquist plots, the summit frequency of the dominant arc decreases with increasing sintering temperatures. It may be attributed to the co-effect of the grain size and pore. A larger value of impedance at a lower frequency suggests an essential role of boundaries in governing the electrical properties of the sintered ceramics. As the sintering temperature increases, the microstructure of the sintered samples becomes denser while conductivity performance decreases. This is due to the reduction of particle interfaces and charge transfer. 2023-03-10T03:45:12Z 2023-03-10T03:45:12Z 2023-01 Article International Journal of Nanoelectronics and Materials, vol.16(1), 2023, pages 63-79 1985-5761 (Printed) 1997-4434 (Online) http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78121 http://ijneam.unimap.edu.my en Universiti Malaysia Perlis (UniMAP) |
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Calcium monosilicate Sintering Electrical conductivity Impedance |
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Calcium monosilicate Sintering Electrical conductivity Impedance Khor, S. F. N. H., Jakfar B., Johar N. M., S. Adzali S. N. H., Mohd. Yunus Cheng, E. M. E. Z., M. Tarmizi Khor, S. F. Z., A. Talib Synthesis of sustainable binary calcium monosilicate ceramics from bio-waste: effect of sintering temperature on microstructure and electrical properties |
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Link to publisher's homepage at http://ijneam.unimap.edu.my/ |
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sfkhor@unimap.edu.my |
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sfkhor@unimap.edu.my Khor, S. F. N. H., Jakfar B., Johar N. M., S. Adzali S. N. H., Mohd. Yunus Cheng, E. M. E. Z., M. Tarmizi Khor, S. F. Z., A. Talib |
| format |
Article |
| author |
Khor, S. F. N. H., Jakfar B., Johar N. M., S. Adzali S. N. H., Mohd. Yunus Cheng, E. M. E. Z., M. Tarmizi Khor, S. F. Z., A. Talib |
| author_sort |
Khor, S. F. |
| title |
Synthesis of sustainable binary calcium monosilicate ceramics from bio-waste: effect of sintering temperature on microstructure and electrical properties |
| title_short |
Synthesis of sustainable binary calcium monosilicate ceramics from bio-waste: effect of sintering temperature on microstructure and electrical properties |
| title_full |
Synthesis of sustainable binary calcium monosilicate ceramics from bio-waste: effect of sintering temperature on microstructure and electrical properties |
| title_fullStr |
Synthesis of sustainable binary calcium monosilicate ceramics from bio-waste: effect of sintering temperature on microstructure and electrical properties |
| title_full_unstemmed |
Synthesis of sustainable binary calcium monosilicate ceramics from bio-waste: effect of sintering temperature on microstructure and electrical properties |
| title_sort |
synthesis of sustainable binary calcium monosilicate ceramics from bio-waste: effect of sintering temperature on microstructure and electrical properties |
| publisher |
Universiti Malaysia Perlis (UniMAP) |
| publishDate |
2023 |
| url |
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78121 |
| _version_ |
1772813133920862208 |