Inorganic nanomaterials have been researched more intensively for the last few decades. They have better, yet again, completely different properties compared to bulky materials from which they are syntesized, and therefore used for many purposes in which bulky materials would not have any impact. Nanomaterials, given their size and shape, are categorized as non-dimensional, one-dimensional, two-dimensional and three-dimensional nanomaterials, that each of has unique properties for which they are used. The synthesis of nanomaterials can be different, but the most commonly used methods are mechanochemical synthesis, methods of manipulation of atoms and/or molecules ("Top-down" and "Bottom-up") and catalytic methods, the most prominent of which is photocatalysis. In the mentioned syntheses, the key properties are: simplicity, energy savings and the best possible properties of nanomaterials. The properties of nanomaterials depend primarily on particle and pore size. It is desirable that the particles are as small as possible in order for the properties to be better. Accordingly, nanomaterials can be used in various fields of biomedicine, pharmacy, and even the food, textile, and cosmetic industries. They are primarily used in robotics and engineering where special manipulation techniques can be used to obtain nanodevices with unique and special properties which are then used for various purposes (such as nanotools). For biomedical purposes, nanomaterials are mostly used to detect various tumor biomarkers in the earliest stages. Thanks to the special magnetic properties of the nanomaterials (superparamagneticity and magnetism), the drugs can be easily transported to the targeted cells.