RT Journal Article
T1 Designing nanocomposites using supercritical CO2 to insert Ni nanoparticles into the pores of nanopatterned BaTiO3 thin films
A1 Castro, Alichandra
A1 Morère, Jacobo
A1 Cabañas Poveda, Albertina
A1 Ferreira, Liliana
A1 Godinho, Margarita
A1 Ferreira, Paula
A1 Vilarinho, Paula
AB A new concept to prepare nanocomposite thin films is explored. Two chemical-based bottom-up steps are used to design functional films including: i) block copolymerassisted self-assembly of a porous matrix; and ii) impregnation of nanoparticles from a ferroic phase within the pores by supercritical CO2 deposition. Porous nanopatterned BaTiO3 thin films with ca. 17 nm of thickness are prepared using a cost-effective solgel solution containing a block copolymer and evaporation-induced self-assembly methodology. Hexagonal-arranged pores with diameter of ca. 95 nm, running perpendicularly to the substrate are filled with Ni nanoparticles using the supercritical fluid deposition technique from reduction of hydrated nickel nitrate in a supercritical CO2-ethanol mixture at 250 ºC. Small Ni nanoparticles with 21 ± 5 nm nm are selectively deposited inside the pores of the porous matrix. Structural and magnetic properties prove the coexistence of both phases.
PB RSC
SN 2050-7526 (Print + online)
YR 2016
FD 2016-12
LK https://hdl.handle.net/20.500.14352/17589
UL https://hdl.handle.net/20.500.14352/17589
LA eng
NO Ministerio de Economía y Competitividad (MINECO)
NO CICECO-Aveiro Institute of Materials
NO FCT/MEC
DS Docta Complutense
RD 30 ago 2024