Growth of gold nanoparticle arrays in TiO2 mesoporous matrixes.
An interconnected Au nanoparticle arrangement is obtained by electrodeposition from Au(III) soluble complexes within the pore system of block-copolymer templated mesoporous titania films. The resulting Au@TiO2 nanocomposites (5 nm Au particles, 5.5 nm amorphous titania walls) have the electrochemical behavior of a gold electrode of high surface area. The attenuation of Au surface plasmon due to -OH electroadsorption and the existence of mixed localized states in these Au@TiO2 nanocomposites are observed by in situ spectroelectrochemistry.
INQUIMAE-DQIAQF, Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria Pab. II, C1428EHA Buenos Aires, Argentina.
M Dolores
MD
Pérez
E
E
Otal
Sara A
SA
Bilmes
Galo J A A
GJ
Soler-Illia
Eduardo L
EL
Crepaldi
David
D
Grosso
Clément
C
Sanchez