RT Journal Article
T1 Accelerated growth from amorphous clusters to metallic nanoparticles observed in electrochemical deposition of platinum within nanopores of porous silicon
A1 Muñoz Noval, Álvaro
A1 Fukami, Kazuhiro
A1 Koyama, Akira
A1 Gallach, Dario
A1 Hermida-Merino, Daniel
A1 Portale, Giuseppe
A1 Kitada, Atsushi
A1 Kuniaki Murase, 
A1 Abe, Takeshi
A1 Hayakawa, Shinjiro
A1 Sakka, Tetsuo
AB This study examined the formation of amorphous platinum (Pt) clusters in nanopores of porous silicon at an initial stage of pore filling. The time dependency of the chemical state and local structure of Pt in the nanoporous silicon were characterized by X-ray absorption fine structure spectroscopy (XAFS). Initially, the Pt deposits showed non-negligible amounts of PtO2, formed by surface oxidation from the atmosphere, suggesting that the particle size was quite small. Deep analysis of extended XAFS (EXAFS) strongly suggested that Pt at the early stage of deposition was amorphous. The mechanism of amorphous Pt formation is discussed based on the confinement effect for Pt complex anions in nanopores.
PB Elsevier
SN 1388-2481
YR 2016
FD 2016-10
LK https://hdl.handle.net/20.500.14352/117379
UL https://hdl.handle.net/20.500.14352/117379
LA eng
NO Á. Muñoz-Noval, K. Fukami, A. Koyama, D. Gallach, D. Hermida-Merino, G. Portale, A. Kitada, K. Murase, T. Abe, S. Hayakawa, T. Sakka, Accelerated growth from amorphous clusters to metallic nanoparticles observed in electrochemical deposition of platinum within nanopores of porous silicon, Electrochemistry Communications 71 (2016) 9–12. https://doi.org/10.1016/j.elecom.2016.07.013.
NO 15H0387716H02411
NO Japan Society for the Promotion of Science
NO Japan Science and Technology Agency
DS Docta Complutense
RD 19 mar 2026