Fig. 4

Scanning Electron Microscopy (SEM) images of the sample at different magnifications. (A) Image at 10,000x magnification showing overall surface morphology with a scale bar of 1 μm. (B) Image at 15,000x magnification providing a closer view of the microstructure with a scale bar of 1 μm. (C) Image at 50,000x magnification revealing fine surface details and nanoparticle distribution with a scale bar of 0.2 μm