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INDONESIA
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)
Published by Universitas Sriwijaya
ISSN : 25409395     EISSN : 25409409     DOI : -
Core Subject : Science, Social,
Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science
Indonesian Journal of Fundamental and Applied Chemistry (IJFAC) is an international research journal and invites contributions of original research articles as well as review articles in several areas of chemistry. The journal aims to publish refereed, high-quality research papers with significant novelty and short communications in all branches of chemistry. Papers which describe novel theory and its application to practice are welcome, as are those which illustrate the transfer of techniques from other disciplines. IJFAC calls for papers that cover the following fields: Biochemistry Inorganic chemistry Physical chemistry Organic chemistry Analytical chemistry Applied Chemistry All papers are peer reviewed by at least two referees. Papers presented at conferences are peer reviewed and selected with the same standards as individually submitted papers. They therefore have the same archival value. Article should be submitted by the Online Submission Module at www.ijfac.unsri.ac.id or email to ijfac@unsri.ac.id
Arjuna Subject : -
Articles 221 Documents
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Effect of Coprecipitation Temperature on the Properties and Photocatalytic Performance of Fe3O4 for Procion red Dye Degradation Rajib Mulia Hakiki; Poedji Loekitowati Hariani; Nabila Aprianti
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 11, No 3 (2026): October 2026
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v11.i3.247

Abstract

Dyes are one of the sources of water pollution that is difficult to treat because synthetic dyes have a complex and relatively stable chemical structure. This study aims to examine the effect of synthesis temperature on the properties of Fe3O4 and to reveal its performance as a photocatalyst for the degradation of Procion red dye (PRD). Fe3O4 was synthesized using the coprecipitation method at various temperatures (30, 50, and 70 oC) and characterized using XRD, VSM, UV-Vis DRS, and SEM-EDS. The Fe3O4 with the best characterization was then used for the PRD photodegradation and optimization using Response Surface Methodology (RSM) with Central Composite Design (CCD). The characterization showed that increasing the synthesis temperature affected the crystallite size, magnetic properties, and optical properties. Fe3O4 synthesized at 70 oC had a crystallite size of 15.80 nm, saturation magnetization (Ms) of 78.73 emu/g, and a band gap of 2.02 eV. These characteristics indicate that Fe3O4 has a nanocrystalline size, strong magnetic properties to facilitate separation, and the ability to absorb light in the visible region. Therefore, Fe3O4 synthesized at a temperature of 70 oC was chosen for PRD photodegradation applications. The optimization results produced a quadratic model and optimum conditions at a PRD concentration of 50 mg/L, pH 5.6, and irradiation time of 43.60 min, with a removal efficiency of 97.49%. The reusability test showed that the degradation efficiency decreased by less than 10% after five consecutive cycles, indicating the good stability and reusability of Fe3O4 as a photocatalyst.Keywords: Fe3O4, coprecipitation, Synthesis Temperature, Procin red dye, reusability

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