Japan's material materials research institute and the Science and Technology Promotion Agency announced on June 24 that several scientists at the agency have developed a new method for manufacturing nanoparticles that can greatly enhance rare metals such as platinum used as a catalyst for exhausting smoke from automobiles. Utilization efficiency. According to reports, this manufacturing method is to add a reducing agent in an aqueous solution composed of platinum, a surfactant and a solvent, and the platinum nanoparticles can be rapidly produced in about 10 minutes after the reducing agent is put in, and the particle ratio of platinum can reach 100. %. The resulting platinum particles are shaped like a few small horns of sugar, with a specific surface area of ​​55 square meters per gram. This number is nearly twice as large as the maximum specific surface area per gram of platinum particles manufactured to date. The advantages of this platinum nanoparticle, in addition to the largest specific surface area, also have high thermal stability, and the amount of reducing agent can be adjusted, and the size of the reducing agent can be changed to produce various kinds of particles according to the use. In addition, the platinum particles are easily alloyed with metals such as ruthenium, nickel, cobalt, and palladium, and various alloy nanomaterials are formed as needed. Since people have been worried that rare metals such as platinum will be used up one day, maximizing their current efficiency has become a topic of research for many scientists. The new method developed by Japanese scientists has increased the efficiency of their use by increasing the specific surface area of ​​rare metal particles used as a catalyst. It can be said that humans have opened up a new way to make maximum use of limited metal resources.
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