Nanopowder may also be known as nanoparticles. It refers to extremely fine particles with an average size of 1-100nm. Others call them ultrafine particle. Their size is greater than that of atom clusters but less than ordinary particles. It can take a variety of shapes such as rod, plate or rod. There are many different compounds that can make up nanoparticles.
Properties and Nanoparticles
1. It is important to understand the thermal characteristics
They have lower melting points and temperatures that are sinterable than standard powders. Because of interface effects and surface effect, this is possible.
For example, 600k is the melting value of bulk Pb, 288k reduces that of 20nm diameter spherical pieces of Pb. At 373k nano-Ag particles are melting, while conventional Ag melts much faster than 1173k. Furthermore, nanoTiO2 becomes densified when heated above 773k. For large-grain samples to become densifiable, heat up to 873k.
2. Optical Characteristics
Broadband, strong absorption
By reducing the size to nanoparticles it is almost black. This results in a sharp drop in reflectance.
Certain nanoparticles can be compared to silicon dioxide, SiC, and alumina. They have a broad spectrum of energetic absorption for the infrared. ZnO (ferric oxide), and titanium dioxide nanoparticles all have a wide energetic absorption spectrum in ultraviolet light.
Both blue and red shift
If the particles are smaller than bulk material, they have more of a blue shift.
3. Chemical properties
You can use it as a catalyst because of the surface effect.
Application to nanoparticles:
1. Nano coating
Nano-coating uses surface technology to apply part or all of the nano-powder-containing material to the substrate. Nano powder has unique surface properties that allow for new design possibilities.
For example, nanoparticles can become surface coatings. They will alter optical properties such as light absorption and reflection. These nanoparticles are ideal for the lighting industry. A high-pressure sodium lamp converts 69% of its electricity to infrared Rays. Very little visible light remains. Also, the lamp’s life span will decrease if heated.
People have been studying the nano-infrared layer. A nano-powder made of silicon dioxide, aluminum oxide and iron oxide has been combined. This can absorb intense infrared rays and can then be made into military clothing. It will not be detected by hostile hot bands, and it can also reduce your weight by 30%.
2. In environmental protection
A lack of minerals and environmental pollution are two major problems that have plagued humanity. It has been an exciting time for the application of nanomaterials in pollution reduction, environmental governance, as well as environmental protection. These nanoparticles have many benefits, including being antibacterial, anticorrosive or deodorant. These nanoparticles also have the ability to absorb heavy metals, which can purify water or adsorb harmful ions.
3. Photocatalysis with nanoparticles
It can also be used to degrade pesticides, protect the environment, and make organic matter. Photocatalysis has high efficiency due to its small particles and specific surface. Furthermore, most electrons and hole generated by the nanoparticles are not likely to recombine upon reaching the surface. Thus, chemical reaction activity and their overall quality is excellent.
Luoyang Tongrun Nano Technology Co.,Ltd manufactures high-purity iron, nickel,, copper, and titan nanoparticles. These nanoparticles have many applications in the lubricating industry, as ceramics, wear resistant, photoelectric, among others. industries.
TRUNNANO (Luoyang Trunnano Tech Co. Ltd.) a new material producer with 12+ years experience in chemical product development and research. Please contact us to request high-quality nano material.