Green synthesis of ZnO and Ag- ZnO nanocrystalline materials: Optical band gap engineering and multi-model XRD size–strain investigation.
Year: 2025
Type: article
Abstract: Green synthesis methods have garnered significant research interest in nanotechnology because of their eco-friendliness, simplicity and affordability. This simple, contemporary and efficient protocol was used in this study to synthesize ZnO NPs and Ag-ZnO NCs, utilizing leaf extract of Phanera variegata (orchid) as a reducing and capping agent, while using Zinc nitrate hexahydrate and silver nitrate as precursors. The optical and structural properties of the synthesized ZnO NPs and Ag-ZnO NCs were analyzed by using UV-Vis Spectroscopy and X-ray Diffraction (XRD). The optical band gap energy of the synthesized ZnO NPs and Ag-ZnO NCs was estimated to be 2.70-2.96 eV and 2.97-3.13 eV, respectively from Tauc plot. The crystal size, dislocation density, lattice strain and morphology index of the synthesized ZnO NPs and Ag-ZnO NCs were determined by using XRD peak profile analysis. These microstructural parameters were determined by using different models, including the Debye Scherrer's model, the linear straight-line method of Scherrer equation, the Monshi-Scherrer model, the Williamson-Hall (Uniform Deformation Model) model, the Modified Williamson-Hall model, the Halder-Wagner model and the Size-Strain plot (SSP) method.
Source: Results in Chemistry
Authors: Md. Solaman Mia, Omar Farook, Md. Tanvir Hossain, Md. Abdus Samad Azad, Shukanta Bhowmik, Md. Ashraful Alam
Institution: Noakhali Science and Technology University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,870
OpenAlex ID: W7117746763