DOI: https://doi.org/10.9767/bcrec.20260

Sustainable Development of ZnSO₄·H₂O and ZnO via Gelatin-Based Colloids for Advanced Dye Photodegradation

Chemistry Education Study Program, Faculty of Teacher Training and Education, Sebelas Maret University, Jl. Ir. Sutami 36A, Surakarta 57126, Indonesia

Received: 28 Nov 2024; Revised: 17 Jan 2025; Accepted: 6 Feb 2025; Available online: 15 Feb 2025; Published: 30 Aug 2025.
Editor(s): Istadi Istadi
Open Access Copyright (c) 2025 by Authors, Published by BCREC Publishing Group
Creative Commons License This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
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Abstract

This study looks at how to sustainably develop ZnSO₄·H₂O (Gunningite) and ZnO (Wurtzite) nanoparticles using gelatin-based colloids, focusing on their ability to break down dyes. Zinc acetate and zinc sulfate heptahydrate were used as starting materials, with gelatin helping to stabilize the process. After heating at 550 °C for 4 hours, the nanoparticles were analyzed for their surface area and composition. Gunningite had a higher surface area of 61.5 m²/g, compared to Wurtzite’s 11.4 m²/g. Elemental analysis showed Gunningite contained 71% zinc, 21% oxygen, and 2% sulfur, while Wurtzite had 69% zinc and 31% oxygen. The photocatalytic activity was tested by degrading methylene blue under UV light. Gunningite had better results, achieving 87% degradation compared to Wurtzite's 72%. This was due to Gunningite’s larger surface area and smaller particle size, making it more effective for treating dye wastewater. Future studies could explore larger-scale synthesis and industrial uses. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Keywords: Gunningite; wurtzite; photodegradation; methylene blue
Funding: Universitas Sebelas Maret under contract International Research Collaboration 2025

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Section: Original Research Articles
Language : EN
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