Synthesis of NiFe2O4-LDH Composites with High Adsorption and Photocatalytic Activity for Methyl Orange Degradation
The presence of hazardous chemicals in wastewater produced by industrial activities and human metropoles is threating the availability of safe drinking water. The development of a multifunctional material coupling adsorption and photocatalytic activity is hereby particularly promising for the remova...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-09-01
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| Series: | Inorganics |
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| Online Access: | http://www.mdpi.com/2304-6740/6/3/98 |
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| author | Cristian D. Valencia-Lopez Mario Zafra-Calvo María José Martín de Vidales Verónica Blanco-Gutierrez Evangelina Atanes-Sanchez Noemí Merayo Francisco Fernandez-Martinez Antonio Nieto-Marquez Antonio J. Dos santos-Garcia |
| author_facet | Cristian D. Valencia-Lopez Mario Zafra-Calvo María José Martín de Vidales Verónica Blanco-Gutierrez Evangelina Atanes-Sanchez Noemí Merayo Francisco Fernandez-Martinez Antonio Nieto-Marquez Antonio J. Dos santos-Garcia |
| author_sort | Cristian D. Valencia-Lopez |
| collection | DOAJ |
| description | The presence of hazardous chemicals in wastewater produced by industrial activities and human metropoles is threating the availability of safe drinking water. The development of a multifunctional material coupling adsorption and photocatalytic activity is hereby particularly promising for the removal of pollutants. We have proved the adsorption and catalytic activity of NiFe2O4-layered double hydroxide (LDH) composite through the degradation of methyl orange (MO) at room temperature under visible light. This degradation is enhanced by using a set of small light-emitting diodes (LEDs) providing a uniform 405 nm UV light. The remediation process is based on a first-step rapid adsorption of MO molecules by the LDH structures followed by the photocatalytic oxidation of the pollutant by the (·OH) radicals produced by the NiFe2O4 semiconductor nanoparticles (NPs). The magnetic properties of the ferrite NPs allow a facile separation of the composite from the liquid media via a simple magnet. NiFe2O4-LDH composite could find wide application as a highly effective adsorbent/oxidizing catalyst operating under visible or near UV light. |
| first_indexed | 2024-12-11T22:40:30Z |
| format | Article |
| id | doaj.art-80027b537d5f4b44b6a83f625ac61d8f |
| institution | Directory Open Access Journal |
| issn | 2304-6740 |
| language | English |
| last_indexed | 2024-12-11T22:40:30Z |
| publishDate | 2018-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Inorganics |
| spelling | doaj.art-80027b537d5f4b44b6a83f625ac61d8f2022-12-22T00:47:48ZengMDPI AGInorganics2304-67402018-09-01639810.3390/inorganics6030098inorganics6030098Synthesis of NiFe2O4-LDH Composites with High Adsorption and Photocatalytic Activity for Methyl Orange DegradationCristian D. Valencia-Lopez0Mario Zafra-Calvo1María José Martín de Vidales2Verónica Blanco-Gutierrez3Evangelina Atanes-Sanchez4Noemí Merayo5Francisco Fernandez-Martinez6Antonio Nieto-Marquez7Antonio J. Dos santos-Garcia8Department of Mechanical, Chemical and Industrial Design Engineering, ETSIDI, Universidad Politécnica de Madrid (UPM), 28012 Madrid, SpainDepartment of Mechanical, Chemical and Industrial Design Engineering, ETSIDI, Universidad Politécnica de Madrid (UPM), 28012 Madrid, SpainDepartment of Mechanical, Chemical and Industrial Design Engineering, ETSIDI, Universidad Politécnica de Madrid (UPM), 28012 Madrid, SpainDepartment of Mechanical, Chemical and Industrial Design Engineering, ETSIDI, Universidad Politécnica de Madrid (UPM), 28012 Madrid, SpainDepartment of Mechanical, Chemical and Industrial Design Engineering, ETSIDI, Universidad Politécnica de Madrid (UPM), 28012 Madrid, SpainDepartment of Mechanical, Chemical and Industrial Design Engineering, ETSIDI, Universidad Politécnica de Madrid (UPM), 28012 Madrid, SpainDepartment of Mechanical, Chemical and Industrial Design Engineering, ETSIDI, Universidad Politécnica de Madrid (UPM), 28012 Madrid, SpainDepartment of Mechanical, Chemical and Industrial Design Engineering, ETSIDI, Universidad Politécnica de Madrid (UPM), 28012 Madrid, SpainDepartment of Mechanical, Chemical and Industrial Design Engineering, ETSIDI, Universidad Politécnica de Madrid (UPM), 28012 Madrid, SpainThe presence of hazardous chemicals in wastewater produced by industrial activities and human metropoles is threating the availability of safe drinking water. The development of a multifunctional material coupling adsorption and photocatalytic activity is hereby particularly promising for the removal of pollutants. We have proved the adsorption and catalytic activity of NiFe2O4-layered double hydroxide (LDH) composite through the degradation of methyl orange (MO) at room temperature under visible light. This degradation is enhanced by using a set of small light-emitting diodes (LEDs) providing a uniform 405 nm UV light. The remediation process is based on a first-step rapid adsorption of MO molecules by the LDH structures followed by the photocatalytic oxidation of the pollutant by the (·OH) radicals produced by the NiFe2O4 semiconductor nanoparticles (NPs). The magnetic properties of the ferrite NPs allow a facile separation of the composite from the liquid media via a simple magnet. NiFe2O4-LDH composite could find wide application as a highly effective adsorbent/oxidizing catalyst operating under visible or near UV light.http://www.mdpi.com/2304-6740/6/3/98magnetic adsorbentsmagnetic nanoparticlesphotocatalysisLayered Double Hydroxideswater pollutionMethyl Orange degradation |
| spellingShingle | Cristian D. Valencia-Lopez Mario Zafra-Calvo María José Martín de Vidales Verónica Blanco-Gutierrez Evangelina Atanes-Sanchez Noemí Merayo Francisco Fernandez-Martinez Antonio Nieto-Marquez Antonio J. Dos santos-Garcia Synthesis of NiFe2O4-LDH Composites with High Adsorption and Photocatalytic Activity for Methyl Orange Degradation Inorganics magnetic adsorbents magnetic nanoparticles photocatalysis Layered Double Hydroxides water pollution Methyl Orange degradation |
| title | Synthesis of NiFe2O4-LDH Composites with High Adsorption and Photocatalytic Activity for Methyl Orange Degradation |
| title_full | Synthesis of NiFe2O4-LDH Composites with High Adsorption and Photocatalytic Activity for Methyl Orange Degradation |
| title_fullStr | Synthesis of NiFe2O4-LDH Composites with High Adsorption and Photocatalytic Activity for Methyl Orange Degradation |
| title_full_unstemmed | Synthesis of NiFe2O4-LDH Composites with High Adsorption and Photocatalytic Activity for Methyl Orange Degradation |
| title_short | Synthesis of NiFe2O4-LDH Composites with High Adsorption and Photocatalytic Activity for Methyl Orange Degradation |
| title_sort | synthesis of nife2o4 ldh composites with high adsorption and photocatalytic activity for methyl orange degradation |
| topic | magnetic adsorbents magnetic nanoparticles photocatalysis Layered Double Hydroxides water pollution Methyl Orange degradation |
| url | http://www.mdpi.com/2304-6740/6/3/98 |
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