biostudies-literatureAn HMinistry of Education, Culture, Sports, Science, and TechnologyJapan Society for the Promotion of ScienceIRENA Projecteaat9459https://www.ebi.ac.uk/biostudies/studies/S-EPMC6587631biostudies-literatureUnknown5(5)Recently, W-based catalysts have provided a promising route to synthesize single-walled carbon nanotubes (SWCNTs) with specific chirality, but the mechanism of the growth selectivity is vaguely understood. We propose a strategy to identify the atomic structure as well as the structure evolution of the Co-W-C ternary SWCNT catalyst. The key is to use a thin SiO₂ film as the catalyst support and observation window. As the catalyst is uniformly prepared on this SiO₂ film and directly used for the SWCNT synthesis, this method has an advantage over conventional methods: it creates an opportunity to obtain original, statistical, and dynamic understanding of the catalyst. As a technique, atomic-scale imaging directly on SiO₂ serves as a powerful and versatile toolScience advancesAtomic-scale structural identification and evolution of Co-W-C ternary SWCNT catalytic nanoparticles: High-resolution STEM imaging on SiO₂.PMC6587631JST-EC DG RTDKAKENHI Grant Numbers JP25107002, JP15H05760, JP15K17984Project No. 12024046Xiang RInoue TLoiseau ALi YKumamoto AOtsuka KChiashi SAn HBichara CIkuhara YMaruyama SfalseAtomic-scale structural identification and evolution of Co-W-C ternary SWCNT catalytic nanoparticles: High-resolution STEM imaging on SiO₂.Recently, W-based catalysts have provided a promising route to synthesize single-walled carbon nanotubes (SWCNTs) with specific chirality, but the mechanism of the growth selectivity is vaguely understood. We propose a strategy to identify the atomic structure as well as the structure evolution of the Co-W-C ternary SWCNT catalyst. The key is to use a thin SiO₂ film as the catalyst support and observation window. As the catalyst is uniformly prepared on this SiO₂ film and directly used for the SWCNT synthesis, this method has an advantage over conventional methods: it creates an opportunity to obtain original, statistical, and dynamic understanding of the catalyst. As a technique, atomic-scale imaging directly on SiO₂ serves as a powerful and versatile tool2019-01-01T00:00:00Z2019 May2025-04-22T00:11:42.932Z2019-07-24T07:25:26ZS-EPMC65876313123645710.1126/sciadv.aat9459