Figure 7.
The image features six scanning electron microscopy images, labelled from a to f, that depict various surfaces characterized by differing textures and particle distributions. Each image shows intricate details of the surface morphology. The top row includes images a and b, showcasing contrasting structures at magnifications of four thousand and eight thousand times, respectively, while the bottom row presents images c to f, varying in magnification from four thousand to eight thousand times. Each image is accompanied by electronic details such as date and time, spot size, working distance, electron beam current, and detection method. Measurements of scale are indicated at the bottom, revealing that selected larger features range from ten to thirty micrometers. The data on magnification, working conditions, and imaging time contribute to the comprehensive understanding of the visualized surfaces.SEM images (different magnifications) of geopolymers containing various ratios of MnO2 nanofibres