Preparation of Iron Oxalate from Iron Ore and Its Application in Photocatalytic Rhodamine B Degradation
In this study, iron oxalate dihydrate (FOD-ore) was produced from iron ore by the process using oxalic acid to extract iron, followed by photo-reduction. Several techniques, such as X-ray powder diffraction (XRD), Raman, scanning electron microscopy with energy dispersive X-Ray analysis (SEM-EDX), u...
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MDPI AG
2023-06-01
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| author | Chitiphon Chuaicham Sulakshana Shenoy Jirawat Trakulmututa Vellaichamy Balakumar Phatchada Santawaja Shinji Kudo Karthikeyan Sekar Keiko Sasaki |
| author_facet | Chitiphon Chuaicham Sulakshana Shenoy Jirawat Trakulmututa Vellaichamy Balakumar Phatchada Santawaja Shinji Kudo Karthikeyan Sekar Keiko Sasaki |
| author_sort | Chitiphon Chuaicham |
| collection | DOAJ |
| description | In this study, iron oxalate dihydrate (FOD-ore) was produced from iron ore by the process using oxalic acid to extract iron, followed by photo-reduction. Several techniques, such as X-ray powder diffraction (XRD), Raman, scanning electron microscopy with energy dispersive X-Ray analysis (SEM-EDX), ultraviolet–visible diffuse reflectance spectroscopy (UV-DRS), photoluminescence spectroscopy (PL), and X-ray photoelectron spectroscopy (XPS), were used to determine the physicochemical properties of the FOD-ore sample. To compare the photocatalytic activity of FOD-ore, commercial hematite (Fe<sub>2</sub>O<sub>3</sub>) was used as a precursor to creating iron oxalate (FOD). The FOD-ore was applied to the photocatalytic degradation of rhodamine B (RhB), a model organic pollutant in wastewater. Using the produced FOD-ore, we were able to degrade more than 85% of RhB within 90 min at a rate approximately 1.4 times higher than that with FOD. FOD-ore demonstrated greater light absorption than FOD, resulting in improved RhB degradation performance. Moreover, the enhanced separation and transport of photogenerated electron-hole pairs can be attributed to the increased photocatalytic RhB degradation rate of FOD-ore, confirmed by photoluminescence results. Therefore, FOD-ore can be utilized as a potential photocatalyst in the degradation process for other organic pollutants under light irradiation. |
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| last_indexed | 2024-03-11T00:39:11Z |
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| spelling | doaj.art-7c45f81d313947c986f23c3982459f602023-11-18T21:20:51ZengMDPI AGSeparations2297-87392023-06-0110737810.3390/separations10070378Preparation of Iron Oxalate from Iron Ore and Its Application in Photocatalytic Rhodamine B DegradationChitiphon Chuaicham0Sulakshana Shenoy1Jirawat Trakulmututa2Vellaichamy Balakumar3Phatchada Santawaja4Shinji Kudo5Karthikeyan Sekar6Keiko Sasaki7Department of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, JapanDepartment of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, JapanDepartment of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, JapanDepartment of Chemistry, Sri Ramakrishna College of Arts & Science, Coimbatore 641006, Tamilnadu, IndiaInterdisciplinary Graduate School of Engineering Sciences, Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga 816-8580, JapanInterdisciplinary Graduate School of Engineering Sciences, Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga 816-8580, JapanDepartment of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, JapanDepartment of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, JapanIn this study, iron oxalate dihydrate (FOD-ore) was produced from iron ore by the process using oxalic acid to extract iron, followed by photo-reduction. Several techniques, such as X-ray powder diffraction (XRD), Raman, scanning electron microscopy with energy dispersive X-Ray analysis (SEM-EDX), ultraviolet–visible diffuse reflectance spectroscopy (UV-DRS), photoluminescence spectroscopy (PL), and X-ray photoelectron spectroscopy (XPS), were used to determine the physicochemical properties of the FOD-ore sample. To compare the photocatalytic activity of FOD-ore, commercial hematite (Fe<sub>2</sub>O<sub>3</sub>) was used as a precursor to creating iron oxalate (FOD). The FOD-ore was applied to the photocatalytic degradation of rhodamine B (RhB), a model organic pollutant in wastewater. Using the produced FOD-ore, we were able to degrade more than 85% of RhB within 90 min at a rate approximately 1.4 times higher than that with FOD. FOD-ore demonstrated greater light absorption than FOD, resulting in improved RhB degradation performance. Moreover, the enhanced separation and transport of photogenerated electron-hole pairs can be attributed to the increased photocatalytic RhB degradation rate of FOD-ore, confirmed by photoluminescence results. Therefore, FOD-ore can be utilized as a potential photocatalyst in the degradation process for other organic pollutants under light irradiation.https://www.mdpi.com/2297-8739/10/7/378photocatalystRhB degradationiron ore |
| spellingShingle | Chitiphon Chuaicham Sulakshana Shenoy Jirawat Trakulmututa Vellaichamy Balakumar Phatchada Santawaja Shinji Kudo Karthikeyan Sekar Keiko Sasaki Preparation of Iron Oxalate from Iron Ore and Its Application in Photocatalytic Rhodamine B Degradation Separations photocatalyst RhB degradation iron ore |
| title | Preparation of Iron Oxalate from Iron Ore and Its Application in Photocatalytic Rhodamine B Degradation |
| title_full | Preparation of Iron Oxalate from Iron Ore and Its Application in Photocatalytic Rhodamine B Degradation |
| title_fullStr | Preparation of Iron Oxalate from Iron Ore and Its Application in Photocatalytic Rhodamine B Degradation |
| title_full_unstemmed | Preparation of Iron Oxalate from Iron Ore and Its Application in Photocatalytic Rhodamine B Degradation |
| title_short | Preparation of Iron Oxalate from Iron Ore and Its Application in Photocatalytic Rhodamine B Degradation |
| title_sort | preparation of iron oxalate from iron ore and its application in photocatalytic rhodamine b degradation |
| topic | photocatalyst RhB degradation iron ore |
| url | https://www.mdpi.com/2297-8739/10/7/378 |
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