Template Synthesis of Nanoparticle Arrays of Gold and Platinum in Mesoporous Silica Films
journal contributionposted on 01.06.2002, 00:00 by Atsushi Fukuoka, Hidenobu Araki, Yuzuru Sakamoto, Noriaki Sugimoto, Hiroshi Tsukada, Yoko Kumai, Yusuke Akimoto, Masaru Ichikawa
Mesoporous silica films work as templates to form uniform nanoparticles of Au and Pt. The composite materials form an array of metal nanoparticles (diameter ca. 2.5 nm) in the one-dimensional mesopores (pore diameter 2.7 nm), showing an ordered structure in the TEM observation. The nanoparticles are isolated from the silica film by dissolving with a diluted HF solution, and in the presence of 1-dodecanethiol unsupported Au nanoparticles form a superlattice structure.