Facile fabrication of SnO2 / MoS2 / rGO ternary composite for solar light-mediated photocatalysis for water remediation
Tin oxide (SnO2) nanostructure has potential application for the removal of organic contaminants from industrial effluents. However, higher bandgap value (3.8 eV and fast recombination of charge carriers (e- - h+ pair)) have limited its applications. To overcome these limitations, we have proposed a...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422006093 |
| _version_ | 1811338545268260864 |
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| author | Philips O. Agboola Imran Shakir |
| author_facet | Philips O. Agboola Imran Shakir |
| author_sort | Philips O. Agboola |
| collection | DOAJ |
| description | Tin oxide (SnO2) nanostructure has potential application for the removal of organic contaminants from industrial effluents. However, higher bandgap value (3.8 eV and fast recombination of charge carriers (e- - h+ pair)) have limited its applications. To overcome these limitations, we have proposed a double Z-scheme strategy, which not only reduced the rate of recombination but lso provides a new pathway for charge carriers to degrade the organic toxins. SnO2 surface sensitization with MoS2 nanofibers by hydrothermal method followed by composite formation with reduced graphene oxide (rGO) via ultrasonication was employed as photocatalyst for methylene blue (MB) degradation. The surface sensitized SnO2 with MoS2 and its composite with rGO were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-rays (EDX), and ultraviolet-visible (UV-Vis.) spectroscopy. XRD analysis revealed that SnO /MoS2 heterostructure has very small crystallite. From UV-visible studies, a redshift was observed for the SnO2 /MoS2 heterostructure as compared to SnO2, which further extends to the visible spectrum with the introduction of reduced graphene oxide (rGO). The photocatalytic studies revealed that SnO2 /MoS2 /rGO composite significantly improved the photocatalytic efficiency up to 90% under 75 min in the presence of solar light. EIS measurements exhibited that SnO2/MoS2/rGO has better charge transfer and mass transfer potential as compared to SnO2. |
| first_indexed | 2024-04-13T18:12:29Z |
| format | Article |
| id | doaj.art-c74467b74ce74862b1d76ff4a0525456 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-13T18:12:29Z |
| publishDate | 2022-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-c74467b74ce74862b1d76ff4a05254562022-12-22T02:35:51ZengElsevierJournal of Materials Research and Technology2238-78542022-05-011843034313Facile fabrication of SnO2 / MoS2 / rGO ternary composite for solar light-mediated photocatalysis for water remediationPhilips O. Agboola0Imran Shakir1College of Engineering Al-Muzahmia Branch, King Saud University, P.O. Box: 800, Riyadh, 11421, Saudi Arabia; Corresponding author.Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, 90095 USATin oxide (SnO2) nanostructure has potential application for the removal of organic contaminants from industrial effluents. However, higher bandgap value (3.8 eV and fast recombination of charge carriers (e- - h+ pair)) have limited its applications. To overcome these limitations, we have proposed a double Z-scheme strategy, which not only reduced the rate of recombination but lso provides a new pathway for charge carriers to degrade the organic toxins. SnO2 surface sensitization with MoS2 nanofibers by hydrothermal method followed by composite formation with reduced graphene oxide (rGO) via ultrasonication was employed as photocatalyst for methylene blue (MB) degradation. The surface sensitized SnO2 with MoS2 and its composite with rGO were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-rays (EDX), and ultraviolet-visible (UV-Vis.) spectroscopy. XRD analysis revealed that SnO /MoS2 heterostructure has very small crystallite. From UV-visible studies, a redshift was observed for the SnO2 /MoS2 heterostructure as compared to SnO2, which further extends to the visible spectrum with the introduction of reduced graphene oxide (rGO). The photocatalytic studies revealed that SnO2 /MoS2 /rGO composite significantly improved the photocatalytic efficiency up to 90% under 75 min in the presence of solar light. EIS measurements exhibited that SnO2/MoS2/rGO has better charge transfer and mass transfer potential as compared to SnO2.http://www.sciencedirect.com/science/article/pii/S2238785422006093NanostructureHeterostructureXRDPhotocatalysis |
| spellingShingle | Philips O. Agboola Imran Shakir Facile fabrication of SnO2 / MoS2 / rGO ternary composite for solar light-mediated photocatalysis for water remediation Journal of Materials Research and Technology Nanostructure Heterostructure XRD Photocatalysis |
| title | Facile fabrication of SnO2 / MoS2 / rGO ternary composite for solar light-mediated photocatalysis for water remediation |
| title_full | Facile fabrication of SnO2 / MoS2 / rGO ternary composite for solar light-mediated photocatalysis for water remediation |
| title_fullStr | Facile fabrication of SnO2 / MoS2 / rGO ternary composite for solar light-mediated photocatalysis for water remediation |
| title_full_unstemmed | Facile fabrication of SnO2 / MoS2 / rGO ternary composite for solar light-mediated photocatalysis for water remediation |
| title_short | Facile fabrication of SnO2 / MoS2 / rGO ternary composite for solar light-mediated photocatalysis for water remediation |
| title_sort | facile fabrication of sno2 mos2 rgo ternary composite for solar light mediated photocatalysis for water remediation |
| topic | Nanostructure Heterostructure XRD Photocatalysis |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422006093 |
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