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Large-Scale Synthesis of Metal Nanocrystals in Aqueous Suspensions.
- Source :
-
Chemistry of Materials . 5/10/2016, Vol. 28 Issue 9, p3196-3202. 7p. - Publication Year :
- 2016
-
Abstract
- Fundamental studies and practical use of metal nanoparticles (NPs) frequently depend on the ability to reproducibly synthesize large quantities of shape-specific NPs. For this reason, facile synthetic procedures are desired that will lead to large quantities of uniformly sized metal NPs exhibiting specific shapes. Here, we report a general approach to the large-scale synthesis of noble metal nanocrystals having well-defined shapes and a narrow size distribution. This method utilizes seed-mediated NP growth in aqueous suspensions of cationic surfactants and metal salts. It leads to a ~60-fold increase in NP volumetric production capacity, compared to the most widely used solution-based synthetic methods. In addition, it uses up to 100 times less cationic surfactant than conventional solution-based methods. The applicability of the method is demonstrated in the synthesis of Pd nanocubes, rhombic dodecahedra, and polyhedrons with low index facets; branched Pd nanocrystals; alloy Pt/Pd nanocubes; Ag nanocubes. The advantages and limitations of the approach are discussed, including accessible shapes, growth kinetics, and the capability to scale up the synthetic procedure. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08974756
- Volume :
- 28
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Chemistry of Materials
- Publication Type :
- Academic Journal
- Accession number :
- 116176926
- Full Text :
- https://doi.org/10.1021/acs.chemmater.6b00936