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Monodisperse and Corrosion‐Resistant Metallic Nanoparticles Embedded into Sepiolite Particles for Optical and Magnetic Applications
Author(s) -
Pecharromán Carlos,
EstebanCubillo Antonio,
Montero Isabel,
Moya José S.,
Aguilar Eduardo,
Santarén Julio,
Alvarez Antonio
Publication year - 2006
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2006.01190.x
Subject(s) - sepiolite , nanoparticle , materials science , metal , chemical engineering , dispersity , corrosion , silicate , matrix (chemical analysis) , nanotechnology , metallurgy , composite material , chemistry , polymer chemistry , raw material , organic chemistry , engineering
The preparation of large quantities of heterogeneous materials containing non‐agglomerated and monodispersed nanoparticles is becoming one of the bottlenecks that hinders the development of commercial devices. Here we describe a method to prepare monodispersed metallic (Cu, Ag, Au, Ni, Co, and Fe) nanoparticles in a silicate matrix (sepiolite) by means of a reduction process of metallic cations associated with a dehydration process of the matrix. This process is characterized by the huge amount of monodispersed metallic nanoparticles that it produces. Additionally, these nanoparticles have been revealed to be remarkably stable against oxidation because the transformed sepiolite matrix becomes a diffusion barrier for oxygen. Furthermore, the nanoparticles present suitable properties to be used for optical and magnetic applications.