Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

AgPt Hollow Nanodendrites: Synthesis and Uniform Dispersion over SiO2 Support for Catalytic Applications

Full text
Author(s):
Rodrigues, Thenner S. ; da Silva, Anderson G. M. ; Goncalves, Mariana C. ; Fajardo, Humberto V. ; Balzer, Rosana ; Probst, Luiz F. D. ; Camargo, Pedro H. C.
Total Authors: 7
Document type: Journal article
Source: CHEMNANOMAT; v. 1, n. 1, p. 46-51, MAY 2015.
Web of Science Citations: 19
Abstract

We describe the synthesis of AgPt hollow nano-dendrites employing Ag nanospheres as seeds by combining a galvanic replacement reaction between Ag and PtCl62- and PtCl62- reduction to Pt in the presence of hydroquinone. AgPt hollow nanodendrites comprised of several Pt islands. approximate to 6 nm in diameter could be obtained in only 15 s following the addition of PtCl62- to a suspension containing Ag nanospheres, and their size and composition could be tuned as a function of the growth time. The synthesis could be scaled up by 100 folds, which enabled us to uniformly support the AgPt nanostructures onto commercial silica. The AgPt nanodendrites displayed good catalytic activities for both the 4-nitrophenol reduction and the BTX oxidation reactions. The results presented herein may inspire the synthesis of noble metal nanostructures displaying attractive features for catalysis, such as hollow interiors, ultrathin walls, and uniform dispersion over solid supports (solid supported catalysts). (AU)

FAPESP's process: 13/19861-6 - Controlled metal nanomaterials for catalysis applications
Grantee:Pedro Henrique Cury Camargo
Support type: Regular Research Grants