Sonochemical preparation and characterization of Sm-doped GO/KSrPO4 nanocomposite photocatalyst for degradation of methylene blue dye
© 2021 Water Environment Federation.
| Veröffentlicht in: | Water environment research : a research publication of the Water Environment Federation. - 1998. - 94(2022), 1 vom: 22. Jan., Seite e1682 |
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| Weitere Verfasser: | , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2022
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| Zugriff auf das übergeordnete Werk: | Water environment research : a research publication of the Water Environment Federation |
| Schlagworte: | Journal Article GO/KSrPO4:Sm nanocomposite dye degradation methylene blue photocatalyst ultrasound |
| Zusammenfassung: | © 2021 Water Environment Federation. The present work pertains to synthesis of Sm-doped GO/KSrPO4 (GO/KSrPO4:Sm) nanocomposite using ultrasound-assisted method. Successful decoration of graphene oxide sheets with the KSrPO4:Sm3+ phosphor was confirmed using analysis techniques including SEM, EDS, UV/visible spectrometry, XRD, and FTIR of the prepared GO/KSrPO4:Sm nanocomposite. Further, photocatalytic activity of this nanocomposite material was studied by examining degradation of methylene blue (MB) dye from water. The effects of several parameters like concentration of Sm3+ in KSrPO4:Sm3+ phosphor within the GO/KSrPO4:Sm nanocomposite photocatalyst, photocatalyst loading, initial dye concentration, pH, and preparation method were evaluated. At a higher concentration of Sm3+ in the photocatalyst (1 mol.%), higher photocatalyst loading (1.5 mg/ml), lesser dye concentration (20 mg/L), and higher pH (11.4), the GO/KSrPO4:Sm nanocomposite photocatalyst prepared using ultrasound-assisted method showed higher dye removal compared to other conditions. A maximum of 83.35% removal of MB dye was achieved by the use of ultrasonically prepared GO/KSrPO4:Sm nanocomposite photocatalyst having a concentration of 1 mol.% of Sm3+ in the KSrPO4:Sm3+ phosphor at a loading of 1.5 mg/ml, initial dye concentration of 20 mg/L, and a pH of 11.4. Rate constant for MB dye degradation using the GO/KSrPO4:Sm nanocomposite photocatalyst synthesized by ultrasonic-assisted method was found to be 0.0053 min-1. PRACTITIONER POINTS: GO/KSrPO4:Sm nanocomposite photocatalyst prepared by ultrasonic-assisted method. Higher Sm3+ doping in nanocomposite with the use of ultrasound assisted method showed better performance of photocatalyst. A maximum removal of 83.35% of methylene blue dye was achieved |
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| Beschreibung: | Date Revised 12.08.2024 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 1554-7531 |
| DOI: | 10.1002/wer.1682 |