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On unsaturated metal sites of metal oxides or semiconductor oxides (such as Ti4+, Fe3+), water molecules first adsorb in molecular form, followed by O-H bond cleavage, resulting in bridge or terminal hydroxyl groups (M-OH) and surface hydrogen atoms. The thermodynamic driving force of this process comes from the strong Lewis acidity of metal ions, making water molecules easy to dissociate. Both experiments and DFT calculations indicate that surfaces covered with low oxygen tend to dissociate and adsorb, while surfaces covered with high oxygen tend to adsorb molecules.

The crystal structure of nano iron oxide is hexagonal, and the lattice parameters change with the decrease of particle size. When the particle size is large (usually larger than tens of nanometers), iron oxide exhibits a typical α- The Fe2O3 structure, also known as hematite structure, is red in color. This is because typical α- The Fe2O3 structure has a high reflectivity for visible light, absorbing shorter wavelengths (blue-green) in visible light, leaving only longer red wavelengths observed.

Nanotechnology is becoming increasingly important in many fields, from medicine to electronics. Nanomaterials, including nanoparticles, nanotubes, and nanowires, are essential components of many nanotechnology applications. Producing these materials requires specialized techniques, such as wet and dry methods. In this article, we will explore what dry and wet methods are, their benefits, and how SAT NANO provides high-quality nanomaterials.

​Dispersants or dispersing agents are substances that aid in the uniform distribution of particles or materials such as nanoparticles in a medium. Dispersing nanoparticles can be a challenging task due to their high surface area, tendency to agglomerate and their small size. In this article, we will discuss the basic principles of using dispersants in dispersing nanoparticles.

Nanosized aluminium powder is an innovative wonder material that has various unique properties that make it useful for many industrial applications. Its enhanced mechanical, thermal and catalytic properties offer opportunities to develop new materials and products with better performance. The synthesis of nanosized aluminium powder is now a developing field of research and promises bright prospects for the future.