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All Journal Indonesian Journal of Chemistry
I Gusti Ayu Putu Aura Kanyaka
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, Yogyakarta 55281, Indonesia
Chemical Engineering, Chemistry & Bioengineering Chemistry

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Synthesis, Characterization, and Antibacterial Activity of Bioactive Glass from Rice Husk Ash and Chicken Eggshell Modified with ZnO Nanoparticles Nuryono Nuryono; Intan Khairina Ramadhani; I Gusti Ayu Putu Aura Kanyaka; Fajar Inggit Pambudi; Indriana Kartini; Mariyam Mariyam
Indonesian Journal of Chemistry Vol 26, No 6 (2026)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.113255

Abstract

This study aimed to modify bioactive glass (BG) with ZnO nanoparticles (ZnO NPs), to identify the microstructure and mechanical strength, and to evaluate the antibacterial activity against Escherichia coli and Staphylococcus aureus. BG was synthesized using sodium silicate derived from rice husk ash (RHA) and calcium oxide (CaO) obtained from chicken eggshells (CES). The BG precursors were prepared with the following composition (% w/w): 45 SiO2 – 24.5 Na2O – (24.5–x) CaO – 6 P2O5 – x ZnO (x = 0, 1, 3, 5, 7%). All precursors were mixed and aged at room temperature for 5 days, then dried and sintered at 1000 °C for 2 h. The results showed that structural characterization confirmed the formation of sodium calcium silicate phases. Incorporation of ZnO NPs into BG at 1–5% (w/w) reduced the crystallite size, while the compressive strength increased with an optimum at 3% (w/w) ZnO NPs. Furthermore, the addition of ZnO NPs decreased the solution pH after immersion and exhibited antibacterial activity against E. coli and S. aureus. The research findings indicate that ZnO NPs-modified BG has potential for biomedical applications.
Co-Authors Fajar Inggit Pambudi Indriana Kartini Intan Khairina Ramadhani Mariyam Mariyam Nuryono Nuryono