Enhanced photocatalytic degradation of toxic contaminants using Dy2O3-SiO2 ceramic nanostructured materials fabricated by a new, simple and rapid sonochemical approach
The present study is on the fabrication of new photocatalytic nanocomposites (Dy2O3-SiO2) employing a basic agent, tetraethylenepentamine (Tetrene), through a simple, efficient and, quick sonochemical approach. The features of the fabricated photocatalytic nanocomposite were examined employing a var...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-01-01
|
| Series: | Ultrasonics Sonochemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S135041772100434X |
| _version_ | 1798024655765766144 |
|---|---|
| author | Kamran Mahdavi Sahar Zinatloo-Ajabshir Qahtan A. Yousif Masoud Salavati-Niasari |
| author_facet | Kamran Mahdavi Sahar Zinatloo-Ajabshir Qahtan A. Yousif Masoud Salavati-Niasari |
| author_sort | Kamran Mahdavi |
| collection | DOAJ |
| description | The present study is on the fabrication of new photocatalytic nanocomposites (Dy2O3-SiO2) employing a basic agent, tetraethylenepentamine (Tetrene), through a simple, efficient and, quick sonochemical approach. The features of the fabricated photocatalytic nanocomposite were examined employing a variety of microscopic and spectroscopic methods such as XRD, EDS, TEM, FTIR, DRS, and FESEM. The outcomes of morphological studies demonstrated that by proper tuning of sonication time and ultrasonic power (10 min and 400 W), a porous nanocomposite composed of sphere-shaped nanoparticles with a particle size in the range of 20 to 60 nm could be fabricated. The energy gap for the binary Dy2O3-SiO2 nanophotocatalyst was determined to be 3.41 eV, making these nanocomposite favorable for removing contaminants. The photocatalytic performance of the optimal nanocomposite sample was tested for photodecomposition of several contaminants including erythrosine, thymol blue, eriochrome black T, Acid Red 14, methyl orange, malachite green, and Rhodamine B. The binary Dy2O3-SiO2 nanophotocatalyst exhibited superior efficiency toward the decomposition of the studied contaminants. It was able to degrade the erythrosine pollutant more effectively (92.9%). Optimization studies for the photocatalytic decomposition of each contaminant demonstrated that the best performance could be achieved at a specific amount of contaminant and nanocatalyst. Trapping experiments illustrated that hydroxyl radicals were more effectively involved in the decomposition of contaminant molecules by Dy2O3-SiO2 nanophotocatalyst. |
| first_indexed | 2024-04-11T18:06:11Z |
| format | Article |
| id | doaj.art-397639cd8ba0417cbc9869712b60248b |
| institution | Directory Open Access Journal |
| issn | 1350-4177 |
| language | English |
| last_indexed | 2024-04-11T18:06:11Z |
| publishDate | 2022-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ultrasonics Sonochemistry |
| spelling | doaj.art-397639cd8ba0417cbc9869712b60248b2022-12-22T04:10:19ZengElsevierUltrasonics Sonochemistry1350-41772022-01-0182105892Enhanced photocatalytic degradation of toxic contaminants using Dy2O3-SiO2 ceramic nanostructured materials fabricated by a new, simple and rapid sonochemical approachKamran Mahdavi0Sahar Zinatloo-Ajabshir1Qahtan A. Yousif2Masoud Salavati-Niasari3Institute of Nano Science and Nano Technology, University of Kashan, Kashan P. O. Box. 87317-51167, IranDepartment of Chemical Engineering, University of Bonab, P.O. Box. 5551761167 Bonab, Iran; Corresponding authors.Department of Chemistry, College of Education, University of Al-Qadisiyah, Al Diwaniyah, IraqInstitute of Nano Science and Nano Technology, University of Kashan, Kashan P. O. Box. 87317-51167, Iran; Corresponding authors.The present study is on the fabrication of new photocatalytic nanocomposites (Dy2O3-SiO2) employing a basic agent, tetraethylenepentamine (Tetrene), through a simple, efficient and, quick sonochemical approach. The features of the fabricated photocatalytic nanocomposite were examined employing a variety of microscopic and spectroscopic methods such as XRD, EDS, TEM, FTIR, DRS, and FESEM. The outcomes of morphological studies demonstrated that by proper tuning of sonication time and ultrasonic power (10 min and 400 W), a porous nanocomposite composed of sphere-shaped nanoparticles with a particle size in the range of 20 to 60 nm could be fabricated. The energy gap for the binary Dy2O3-SiO2 nanophotocatalyst was determined to be 3.41 eV, making these nanocomposite favorable for removing contaminants. The photocatalytic performance of the optimal nanocomposite sample was tested for photodecomposition of several contaminants including erythrosine, thymol blue, eriochrome black T, Acid Red 14, methyl orange, malachite green, and Rhodamine B. The binary Dy2O3-SiO2 nanophotocatalyst exhibited superior efficiency toward the decomposition of the studied contaminants. It was able to degrade the erythrosine pollutant more effectively (92.9%). Optimization studies for the photocatalytic decomposition of each contaminant demonstrated that the best performance could be achieved at a specific amount of contaminant and nanocatalyst. Trapping experiments illustrated that hydroxyl radicals were more effectively involved in the decomposition of contaminant molecules by Dy2O3-SiO2 nanophotocatalyst.http://www.sciencedirect.com/science/article/pii/S135041772100434XDysprosium oxideSiO2NanostructureUltrasonic irradiationPhotocatalytic performance |
| spellingShingle | Kamran Mahdavi Sahar Zinatloo-Ajabshir Qahtan A. Yousif Masoud Salavati-Niasari Enhanced photocatalytic degradation of toxic contaminants using Dy2O3-SiO2 ceramic nanostructured materials fabricated by a new, simple and rapid sonochemical approach Ultrasonics Sonochemistry Dysprosium oxide SiO2 Nanostructure Ultrasonic irradiation Photocatalytic performance |
| title | Enhanced photocatalytic degradation of toxic contaminants using Dy2O3-SiO2 ceramic nanostructured materials fabricated by a new, simple and rapid sonochemical approach |
| title_full | Enhanced photocatalytic degradation of toxic contaminants using Dy2O3-SiO2 ceramic nanostructured materials fabricated by a new, simple and rapid sonochemical approach |
| title_fullStr | Enhanced photocatalytic degradation of toxic contaminants using Dy2O3-SiO2 ceramic nanostructured materials fabricated by a new, simple and rapid sonochemical approach |
| title_full_unstemmed | Enhanced photocatalytic degradation of toxic contaminants using Dy2O3-SiO2 ceramic nanostructured materials fabricated by a new, simple and rapid sonochemical approach |
| title_short | Enhanced photocatalytic degradation of toxic contaminants using Dy2O3-SiO2 ceramic nanostructured materials fabricated by a new, simple and rapid sonochemical approach |
| title_sort | enhanced photocatalytic degradation of toxic contaminants using dy2o3 sio2 ceramic nanostructured materials fabricated by a new simple and rapid sonochemical approach |
| topic | Dysprosium oxide SiO2 Nanostructure Ultrasonic irradiation Photocatalytic performance |
| url | http://www.sciencedirect.com/science/article/pii/S135041772100434X |
| work_keys_str_mv | AT kamranmahdavi enhancedphotocatalyticdegradationoftoxiccontaminantsusingdy2o3sio2ceramicnanostructuredmaterialsfabricatedbyanewsimpleandrapidsonochemicalapproach AT saharzinatlooajabshir enhancedphotocatalyticdegradationoftoxiccontaminantsusingdy2o3sio2ceramicnanostructuredmaterialsfabricatedbyanewsimpleandrapidsonochemicalapproach AT qahtanayousif enhancedphotocatalyticdegradationoftoxiccontaminantsusingdy2o3sio2ceramicnanostructuredmaterialsfabricatedbyanewsimpleandrapidsonochemicalapproach AT masoudsalavatiniasari enhancedphotocatalyticdegradationoftoxiccontaminantsusingdy2o3sio2ceramicnanostructuredmaterialsfabricatedbyanewsimpleandrapidsonochemicalapproach |