Recently, researchers at the Tokyo Institute of Technology, Japan, led by Takamasa Tsukamoto and Kimiisa Yamamoto, developed the atomic hybridization method (AHM) to prepare highly efficient and stable sub-nanoparticles (SNPs) technology.
As we all know, the small size effects of nanomaterials include high reactivity, semiconductor properties and so on. Sub-nanoparticles refer to particles that are smaller than nanoparticles and have a particle size of about 1 nm. As a catalyst required for industrial reactions, it is even expected to surpass the capabilities of nanocatalysts. But obviously it cannot be obtained through traditional production methods. The preparation method developed by Japanese researchers uses a "macromolecular template" of a benzimine dendrimer to precisely control the size and composition of the snp. The results were published in the International Edition of Applied Chemistry. They even further developed the alloy SNPs catalyst .
"We created single-metal, bi-metal and ternary metal snp (containing one, two or three metals respectively), all of which are composed of coin metal elements [copper, silver and gold], and each type of snp Test to see how well each snp catalyst performs.” The research leader Tsukamoto said that by testing the olefin catalytic reaction ability, they concluded that sub-nano catalysts are more stable than nano-catalysts and can perform under normal conditions (not high temperature and pressure) Very high catalytic performance; and ternary metal SNPs show a higher catalytic turnover frequency, indicating that metal hybridization is beneficial to improve catalyst activity.