This title appears in the Scientific Report :
2018
Please use the identifier:
http://dx.doi.org/10.1002/chem.201800579 in citations.
Deciphering the surface composition and the internal structure of alloyed silver-gold nanoparticles
Deciphering the surface composition and the internal structure of alloyed silver-gold nanoparticles
Spherical bimetallic AgAu nanoparticles in the molar ratios 30:70, 50:50, and 70:30 with diameters of 30 to 40 nm were analyzed together with pure silver and gold nanoparticles of the same size. Dynamic light scattering (DLS) and differential centrifugal sedimentation (DCS) were used for size determ...
Saved in:
Personal Name(s): | Grasmik, V. |
---|---|
Rurainsky, C. / Loza, Kateryna / Evers, M. V. / Prymak, O. / Heggen, Marc / Tschulik, K. (Corresponding author) / Epple, M. | |
Contributing Institute: |
Mikrostrukturforschung; PGI-5 |
Published in: | Chemistry - a European journal, 24 (2018) 36, S. 9051 - 9060 |
Imprint: |
Weinheim
Wiley-VCH
2018
|
PubMed ID: |
29522654 |
DOI: |
10.1002/chem.201800579 |
Document Type: |
Journal Article |
Research Program: |
Controlling Configuration-Based Phenomena |
Publikationsportal JuSER |
Spherical bimetallic AgAu nanoparticles in the molar ratios 30:70, 50:50, and 70:30 with diameters of 30 to 40 nm were analyzed together with pure silver and gold nanoparticles of the same size. Dynamic light scattering (DLS) and differential centrifugal sedimentation (DCS) were used for size determination. Cyclic voltammetry (CV) was used to determine the nanoalloy composition, together with atomic absorption spectroscopy (AAS), energy‐dispersive X‐ray spectroscopy (EDX) and ultraviolet‐visible (UV/Vis) spectroscopy. Underpotential deposition (UPD) of lead (Pb) on the particle surface gave information about its spatial elemental distribution and surface area. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM) were applied to study the shape and the size of the nanoparticles. X‐ray powder diffraction gave the crystallite size and the microstrain. The particles form a solid solution (alloy) with an enrichment of silver on the nanoparticle surface, including some silver‐rich patches. UPD indicated that the surface only consists of silver atoms. |