title: Shape- and size-controlled synthesis in hard templates: sophisticated chemical reduction for mesoporous monocrystalline platinum nanoparticles.
abstract: Here we report a novel hard-templating strategy for the synthesis of mesoporous monocrystalline Pt nanoparticles (NPs) with uniform shapes and sizes. Mesoporous Pt NPs were successfully prepared through controlled chemical reduction using ascorbic acid by employing 3D bicontinuous mesoporous silica (KIT-6) and 2D mesoporous silica (SBA-15) as a hard template. The particle size could be controlled by changing the reduction time. Interestingly, the Pt replicas prepared from KIT-6 showed polyhedral morphology. The single crystallinity of the Pt fcc structure coherently extended over the whole particle.
authors.affiliation: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
authors.forename: Hongjing
authors.initials: H
authors.lastname: Wang
authors.forename: Hu Young
authors.initials: HY
authors.lastname: Jeong
authors.forename: Masataka
authors.initials: M
authors.lastname: Imura
authors.forename: Liang
authors.initials: L
authors.lastname: Wang
authors.forename: Logudurai
authors.initials: L
authors.lastname: Radhakrishnan
authors.forename: Nobuhisa
authors.initials: N
authors.lastname: Fujita
authors.forename: Toen
authors.initials: T
authors.lastname: Castle
authors.forename: Osamu
authors.initials: O
authors.lastname: Terasaki
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Yamauchi