Electrosynthesis of nanocomposites of Ag, Au, Pd nanoparticles with aluminum(III), zinc(II), and titanium(IV) oxide-hydroxides

The two-step electrosyntheses of metal nanoparticles (MNP) (M = Pd, Ag, Au) nanocomposites with aluminum(III), zinc(II), titanium(IV) oxide-hydroxides were carried out. It has been shown that the first step of the oxide-hydroxides synthesis in an undivided cell using soluble Al, Zn, or Ti anodes and...

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Bibliographic Details
Published in:Journal of solid state electrochemistry 2022-10, Vol.26 (10), p.2271-2285
Main Authors: Fazleeva, Rezeda R., Nasretdinova, Gulnaz R., Evtyugin, Vladimir G., Gubaidullin, Aidar T., Yanilkin, Vitaliy V.
Format: Article
Language:English
Subjects:
Aluminum
Analytical Chemistry
Anodic dissolution
Catalytic activity
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Crystallites
Dissolution
Electrochemistry
Energy Storage
Gold
Hydroxides
Nanocomposites
Nanoparticles
Nitrophenol
Original Paper
Oxygen
Palladium
Physical Chemistry
Reagents
Silver
Titanium
Titanium dioxide
Zinc
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Summary:The two-step electrosyntheses of metal nanoparticles (MNP) (M = Pd, Ag, Au) nanocomposites with aluminum(III), zinc(II), titanium(IV) oxide-hydroxides were carried out. It has been shown that the first step of the oxide-hydroxides synthesis in an undivided cell using soluble Al, Zn, or Ti anodes and dissolved atmospheric oxygen as reagent proceeds efficiently at controlled potentials of oxygen reduction to a superoxide ion in medium DMSO/0.1 M Bu 4 NCl with a current yield of 141% (Al), 102% (Zn), 110% (Ti), and formation of an amorphous phase. The second step consists of mediated electrosynthesis of MNPs in the obtained solutions of oxide-hydroxides and is carried out using methylviologen as a mediator and cetyltrimethylammonium chloride (CTAC) as a stabilizer. MNPs obtained in the solution bulk quantitatively or partially bound to the oxide-hydroxides. PdNPs are combined with one common CTAC shell and are agglomerates of smaller nanoparticles (~ Pd = 6 ± 2 nm). Ag and Au NPs are individual; their size (amorphous part) is higher, depends on the oxide-hydroxide component in nanocomposites, although this component does not affect the size of metal crystallites. Obtained nanocomposites exhibit catalytic activity in the reaction of  p -nitrophenol reduction by sodium borohydride, which increases with increasing of CTAC concentration.
ISSN:1432-8488
1433-0768
DOI:10.1007/s10008-022-05248-1