title: Investigation of the stability of Platinum nanoparticles incorporated in mesoporous silica with different pore sizes.
abstract: The effect of the pore size of mesoporous silica on the stability of Pt nanoparticles (NPs) has been investigated. TEM observation and XRD measurement were conducted in situ for Pt loaded mesoporous silica with different mesopore sizes. It turns out that smaller pores are more effective to stabilize Pt NPs below 600 °C. However, aggregation of Pt NPs on the surface of particles is not fully suppressed more than 1000 °C in ambient atmosphere even though smaller mesopore size is applied. The type of precursor does not affect the stability of Pt NPs.
authors.affiliation: Inorganic Materials Lab., Toyota Central R & D Labs. Inc., Nagakute, Aichi 480-1192, Japan; Toyota Research Institute North America, 1555 Woodridge Ave, Ann Arbor, MI 48105, USA. Electronic address: k-yano@mosk.tytlabs.co.jp.
authors.forename: Kazuhisa
authors.initials: K
authors.lastname: Yano
authors.affiliation: Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA.
authors.forename: Shuyi
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA.
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Pan
authors.affiliation: Inorganic Materials Lab., Toyota Central R & D Labs. Inc., Nagakute, Aichi 480-1192, Japan.
authors.forename: Narihito
authors.initials: N
authors.lastname: Tatsuda
mesh_terms: D053768:Metal Nanoparticles; D046529:Microscopy, Electron, Transmission; D010984:Platinum / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D010984:Platinum; D012822:Silicon Dioxide
keywords: In situ TEM; Mesoporous silica; Platinum nanoparticles; Pore size; Stability