Advanced materials

  A nanometer is a scale, and nanotechnology is a complete system integrating advanced science and technology. Its basic meaning is to understand and transform nature within the scope of nanoscale and innovate materials through direct operation and arrangement of atoms and molecules. Nanoscience and technology mainly include nanosystem physics, nanochemistry, nanomaterials science, nanobiology, Nano Electronics, nano processing, Nano Mechanics. Nanomaterials are the most dynamic and abundant branch of Science in the field of nanotechnology. In the 1980s, nanomaterials refer to the solid materials composed of nanoparticles, in which the size of nanoparticles is no more than 100 nm. The preparation and synthesis technology of nanomaterials is the main research direction at present. Although some progress has been made in the synthesis of samples, a large number of bulk samples can not be prepared so far. Therefore, the preparation of nanomaterials plays an important role in its appli...

  The photochemical properties of titanium dioxide make it can be used in many fields, such as air, water, and fluid purification. Photocatalysts doped with carbon or other heteroatoms can also be used in sealed spaces or regions with scattering light sources. When used in coatings on buildings, pedestrian slabs, concrete walls, or roof tiles, they can significantly increase the decomposition of air pollutants such as nitrogen oxides, aromatic hydrocarbons, and aldehydes. Besides, it is widely used in the production of sunscreen, non-toxic, harmless to the human body. Ultrafine titanium dioxide has excellent UV shielding and transparency. It is widely used in cosmetics, wood protection, food packaging plastics, durable household film, man-made fiber, and natural fiber, transparent coating. Because of its special optical effect in the metal flash coating, it has been paid attention to and applied in high-grade car paint.       Principle of super hydrophilicity...