Magnetic recoverable Ag3PO4/Fe3O4/γ-Fe2O3 nanocomposite
The use of nanomaterials in water treatment is an alternative for the development of new systems to optimize the purification process. Heterogeneous photocatalysis is used for the treatment of wastewaters contaminated with recalcitrant pollutants that cannot be removed with conventional wastewater t...
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Elsevier
2024-01-01
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| Series: | Desalination and Water Treatment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1944398624000821 |
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| author | Jenifer Vaswani Reboso Jaime Sadhwani Alonso Dunia E. Santiago |
| author_facet | Jenifer Vaswani Reboso Jaime Sadhwani Alonso Dunia E. Santiago |
| author_sort | Jenifer Vaswani Reboso |
| collection | DOAJ |
| description | The use of nanomaterials in water treatment is an alternative for the development of new systems to optimize the purification process. Heterogeneous photocatalysis is used for the treatment of wastewaters contaminated with recalcitrant pollutants that cannot be removed with conventional wastewater treatment techniques. Silver phosphate (Ag3PO4) can be used in visible-light driven photocatalysis. An important challenge of heterogeneous photocatalysis is to find a proper support for the photocatalysts to reduce the expense associated with the separation and reuse of these materials. However, the immobilization of the catalyst leads to lower reaction rates because the exposed surface area decreases and the material used as support can also interfere. In the last years, the use of magnetic materials to support photocatalysts has attracted special attention because it allows high surface areas to be exposed. Only few authors have reported the use of Ag3PO4/magnetic nanocomposites for photocatalysis and these need to be continued to improve their efficiency. In this work we synthesized Ag3PO4 and supported it on ferromagnetite (Fe3O4). In this study, Fe3O4 was synthesis following the Massart’s method. Ag3PO4 was synthesised over Fe3O4 from the reaction between silver nitrate (AgNO3) and disodium hydrogen phosphate (Na2HPO4). For characterization, DRS, SEM, XRD and magnetization studies were carried out. Ag3PO4 was synthesised and satisfactorily supported over magnetite (Fe3O423). The photodegradation of 10 mg·L−1 of methylene blue was achieved, although the apparent reaction rate constant was slightly lower for the magnetic composite than for bare Ag3PO4. This is explained because the composite contained 48% of the active Ag3PO4 material, as depicted form XRD studies. |
| format | Article |
| id | doaj-art-4e8bce691b734784a15f371c0d919f38 |
| institution | OA Journals |
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| language | English |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
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| series | Desalination and Water Treatment |
| spelling | doaj-art-4e8bce691b734784a15f371c0d919f382025-08-20T02:01:14ZengElsevierDesalination and Water Treatment1944-39862024-01-0131710006510.1016/j.dwt.2024.100065Magnetic recoverable Ag3PO4/Fe3O4/γ-Fe2O3 nanocompositeJenifer Vaswani Reboso0Jaime Sadhwani Alonso1Dunia E. Santiago2Universidad de Las Palmas de Gran Canaria, Escuela de Ingenierías Industriales y Civiles, Dpto. de Ingeniería de Procesos, Campus Universitario de Tafira, 35017 Las Palmas, Spain; Grupo Control Analítico de Fuentes Medioambientales (CAFMA), Instituto Universitario de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas, Spain; Corresponding author at: Universidad de Las Palmas de Gran Canaria, Escuela de Ingenierías Industriales y Civiles, Dpto. de Ingeniería de Procesos, Campus Universitario de Tafira, 35017 Las Palmas, Spain.Universidad de Las Palmas de Gran Canaria, Escuela de Ingenierías Industriales y Civiles, Dpto. de Ingeniería de Procesos, Campus Universitario de Tafira, 35017 Las Palmas, Spain; Grupo Sistemas Industriales de Eficiencia, Instrumentación y Protección (SEIP), Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas, SpainUniversidad de Las Palmas de Gran Canaria, Escuela de Ingenierías Industriales y Civiles, Dpto. de Ingeniería de Procesos, Campus Universitario de Tafira, 35017 Las Palmas, Spain; Grupo de Fotocatálisis y Espectroscopia para Aplicaciones Medioambientales (FEAM), Departamento de Química, Instituto de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas, SpainThe use of nanomaterials in water treatment is an alternative for the development of new systems to optimize the purification process. Heterogeneous photocatalysis is used for the treatment of wastewaters contaminated with recalcitrant pollutants that cannot be removed with conventional wastewater treatment techniques. Silver phosphate (Ag3PO4) can be used in visible-light driven photocatalysis. An important challenge of heterogeneous photocatalysis is to find a proper support for the photocatalysts to reduce the expense associated with the separation and reuse of these materials. However, the immobilization of the catalyst leads to lower reaction rates because the exposed surface area decreases and the material used as support can also interfere. In the last years, the use of magnetic materials to support photocatalysts has attracted special attention because it allows high surface areas to be exposed. Only few authors have reported the use of Ag3PO4/magnetic nanocomposites for photocatalysis and these need to be continued to improve their efficiency. In this work we synthesized Ag3PO4 and supported it on ferromagnetite (Fe3O4). In this study, Fe3O4 was synthesis following the Massart’s method. Ag3PO4 was synthesised over Fe3O4 from the reaction between silver nitrate (AgNO3) and disodium hydrogen phosphate (Na2HPO4). For characterization, DRS, SEM, XRD and magnetization studies were carried out. Ag3PO4 was synthesised and satisfactorily supported over magnetite (Fe3O423). The photodegradation of 10 mg·L−1 of methylene blue was achieved, although the apparent reaction rate constant was slightly lower for the magnetic composite than for bare Ag3PO4. This is explained because the composite contained 48% of the active Ag3PO4 material, as depicted form XRD studies.http://www.sciencedirect.com/science/article/pii/S1944398624000821PhotocatalysisWastewater treatmentMagnetic nanomaterialsSilver phosphate |
| spellingShingle | Jenifer Vaswani Reboso Jaime Sadhwani Alonso Dunia E. Santiago Magnetic recoverable Ag3PO4/Fe3O4/γ-Fe2O3 nanocomposite Desalination and Water Treatment Photocatalysis Wastewater treatment Magnetic nanomaterials Silver phosphate |
| title | Magnetic recoverable Ag3PO4/Fe3O4/γ-Fe2O3 nanocomposite |
| title_full | Magnetic recoverable Ag3PO4/Fe3O4/γ-Fe2O3 nanocomposite |
| title_fullStr | Magnetic recoverable Ag3PO4/Fe3O4/γ-Fe2O3 nanocomposite |
| title_full_unstemmed | Magnetic recoverable Ag3PO4/Fe3O4/γ-Fe2O3 nanocomposite |
| title_short | Magnetic recoverable Ag3PO4/Fe3O4/γ-Fe2O3 nanocomposite |
| title_sort | magnetic recoverable ag3po4 fe3o4 γ fe2o3 nanocomposite |
| topic | Photocatalysis Wastewater treatment Magnetic nanomaterials Silver phosphate |
| url | http://www.sciencedirect.com/science/article/pii/S1944398624000821 |
| work_keys_str_mv | AT jenifervaswanireboso magneticrecoverableag3po4fe3o4gfe2o3nanocomposite AT jaimesadhwanialonso magneticrecoverableag3po4fe3o4gfe2o3nanocomposite AT duniaesantiago magneticrecoverableag3po4fe3o4gfe2o3nanocomposite |