ZnO/CdS nanocomposites: Synthesis, characterization and assessment of photocatalytic performance
This study investigates the photocatalytic degradation of Methyl orange (MO) dye using ZnO/CdS nanocomposites synthesized by the hydrothermal technique. Using XRD, FTIR, FESEM-EDS, TEM, UV-Vis DRS, BET, and XPS, the chemically produced chalcogenide hybrid nanocomposites were thoroughly characterized...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-01-01
|
| Series: | Next Nanotechnology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949829525000154 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849709510221889536 |
|---|---|
| author | Anupam Sarker Shahriar Atik Fahim Rupna Akther Putul Humayra Gazi Shah Md. Masum Md. Ashraful Islam Molla |
| author_facet | Anupam Sarker Shahriar Atik Fahim Rupna Akther Putul Humayra Gazi Shah Md. Masum Md. Ashraful Islam Molla |
| author_sort | Anupam Sarker |
| collection | DOAJ |
| description | This study investigates the photocatalytic degradation of Methyl orange (MO) dye using ZnO/CdS nanocomposites synthesized by the hydrothermal technique. Using XRD, FTIR, FESEM-EDS, TEM, UV-Vis DRS, BET, and XPS, the chemically produced chalcogenide hybrid nanocomposites were thoroughly characterized. The 5 % ZnO/CdS nanocomposite photocatalyst exhibited a crystallite size of 5.63 nm, a bandgap energy of 2.35 eV, and a larger surface area of 118.47 m2/g, indicating excellent photocatalytic performance compared to pristine ZnO and CdS. The best MO removal efficiency of 98.67 % within 60 min is demonstrated by the 5 % ZnO/CdS photocatalyst under UV-C irradiation. The photocatalytic MO degradation reaction maintains a pseudo-first-order kinetic law. The rate constant (k) and half-life (t1/2) are found to be 0.065 min−1 and 10.66 min, respectively. The reusability of the 5 % ZnO/CdS photocatalyst was investigated, and the MO removal efficiency remained acceptable after three cycles. These findings suggest that the synthesized ZnO/CdS nanocomposite is a promising photocatalyst for efficiently and sustainably removing organic pollutants from wastewater. |
| format | Article |
| id | doaj-art-8829277983944d3bb0e52bef00da5d22 |
| institution | DOAJ |
| issn | 2949-8295 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Next Nanotechnology |
| spelling | doaj-art-8829277983944d3bb0e52bef00da5d222025-08-20T03:15:16ZengElsevierNext Nanotechnology2949-82952025-01-01810014610.1016/j.nxnano.2025.100146ZnO/CdS nanocomposites: Synthesis, characterization and assessment of photocatalytic performanceAnupam Sarker0Shahriar Atik Fahim1Rupna Akther Putul2Humayra Gazi3Shah Md. Masum4Md. Ashraful Islam Molla5Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka 1000, BangladeshDepartment of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka 1000, Bangladesh; Department of Chemistry, American International University-Bangladesh, Dhaka 1229, BangladeshDepartment of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka 1000, BangladeshDepartment of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka 1000, BangladeshDepartment of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka 1000, BangladeshDepartment of Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka 1000, Bangladesh; Corresponding author.This study investigates the photocatalytic degradation of Methyl orange (MO) dye using ZnO/CdS nanocomposites synthesized by the hydrothermal technique. Using XRD, FTIR, FESEM-EDS, TEM, UV-Vis DRS, BET, and XPS, the chemically produced chalcogenide hybrid nanocomposites were thoroughly characterized. The 5 % ZnO/CdS nanocomposite photocatalyst exhibited a crystallite size of 5.63 nm, a bandgap energy of 2.35 eV, and a larger surface area of 118.47 m2/g, indicating excellent photocatalytic performance compared to pristine ZnO and CdS. The best MO removal efficiency of 98.67 % within 60 min is demonstrated by the 5 % ZnO/CdS photocatalyst under UV-C irradiation. The photocatalytic MO degradation reaction maintains a pseudo-first-order kinetic law. The rate constant (k) and half-life (t1/2) are found to be 0.065 min−1 and 10.66 min, respectively. The reusability of the 5 % ZnO/CdS photocatalyst was investigated, and the MO removal efficiency remained acceptable after three cycles. These findings suggest that the synthesized ZnO/CdS nanocomposite is a promising photocatalyst for efficiently and sustainably removing organic pollutants from wastewater.http://www.sciencedirect.com/science/article/pii/S2949829525000154PhotocatalysisZnO/CdS nanocompositeHydrothermalMethyl orangeUV-C irradiation |
| spellingShingle | Anupam Sarker Shahriar Atik Fahim Rupna Akther Putul Humayra Gazi Shah Md. Masum Md. Ashraful Islam Molla ZnO/CdS nanocomposites: Synthesis, characterization and assessment of photocatalytic performance Next Nanotechnology Photocatalysis ZnO/CdS nanocomposite Hydrothermal Methyl orange UV-C irradiation |
| title | ZnO/CdS nanocomposites: Synthesis, characterization and assessment of photocatalytic performance |
| title_full | ZnO/CdS nanocomposites: Synthesis, characterization and assessment of photocatalytic performance |
| title_fullStr | ZnO/CdS nanocomposites: Synthesis, characterization and assessment of photocatalytic performance |
| title_full_unstemmed | ZnO/CdS nanocomposites: Synthesis, characterization and assessment of photocatalytic performance |
| title_short | ZnO/CdS nanocomposites: Synthesis, characterization and assessment of photocatalytic performance |
| title_sort | zno cds nanocomposites synthesis characterization and assessment of photocatalytic performance |
| topic | Photocatalysis ZnO/CdS nanocomposite Hydrothermal Methyl orange UV-C irradiation |
| url | http://www.sciencedirect.com/science/article/pii/S2949829525000154 |
| work_keys_str_mv | AT anupamsarker znocdsnanocompositessynthesischaracterizationandassessmentofphotocatalyticperformance AT shahriaratikfahim znocdsnanocompositessynthesischaracterizationandassessmentofphotocatalyticperformance AT rupnaaktherputul znocdsnanocompositessynthesischaracterizationandassessmentofphotocatalyticperformance AT humayragazi znocdsnanocompositessynthesischaracterizationandassessmentofphotocatalyticperformance AT shahmdmasum znocdsnanocompositessynthesischaracterizationandassessmentofphotocatalyticperformance AT mdashrafulislammolla znocdsnanocompositessynthesischaracterizationandassessmentofphotocatalyticperformance |