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Research Paper | Nanotechnology | India | Volume 14 Issue 3, March 2025 | Popularity: 5.5 / 10
Influence of MoS2 Decoration on ZnO Nanorods for Enhanced Photocatalytic Applications
Priyavrat, Ariba Khan, Anil Kumar Singh, Jamilur R. Ansari
Abstract: Molybdenum disulfide (MoS2) and its related two-dimensional materials have emerged as significant subjects of investigation due to their exceptional characteristics, including high catalytic efficiency, remarkable photoluminescent properties for bio-imaging, and superior electronic performance. Recent advancements suggest that doping MoS2 with metal oxides, particularly zinc oxide (ZnO), can further elevate these properties. In this study, we synthesized pristine MoS2 nanosheets alongside ZnO-MoS2 hybrid structures utilizing a solvothermal synthesis method. ZnO is noted for its advantageous properties, such as a wide bandgap, lower energy barriers for charge carrier mobility, and strong thermal and chemical stability. The structural morphology and dimensional characteristics of the ZnO-MoS2 hybrids were thoroughly analyzed through high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible (UV-Vis) spectroscopy, and Fourier-transform infrared spectroscopy (FTIR). The results demonstrated a uniform distribution of ZnO nanorods coated with MoS2 nanosheets. In photocatalytic assessments, the ZnO and ZnO-MoS2 hybrids achieved degradation efficiencies of 41% and 81%, respectively, for a 5 ?M methylene blue (MB) solution. The corresponding rate constants for the degradation processes were computed as 29.1 ? 10?? min?? for ZnO and 74.1 ? 10?? min?? for ZnO-MoS2 over a 45-minute exposure to UV light. Quantitative analysis of the absorption spectra was conducted using a UV spectrophotometer, reinforcing the potential application of these hybrid materials in the photocatalytic degradation of environmental contaminants.
Keywords: MoS2 nanosheets, ZnO nanorods, methylene blue, photocatalysis, XPS
Edition: Volume 14 Issue 3, March 2025
Pages: 1456 - 1462
DOI: https://www.doi.org/10.21275/SR25325145454
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