Work

Quantification of surface composition and segregation on AuAg bimetallic nanoparticles by MALDI MS

Year: 2020

Type: article

Abstract: In this work we show that it is possible to use MALDI-TOF as a tool to quantify the atomic composition and to describe the phase segragation of the surface of ligand-coated, bimetallic AuAg nanoparticles. Our investigation shows that AuAg nanoparticles of various compositions exhibit core-shell heterogeneity with surface enrichment of Ag. A Monte-Carlo type simulation demonstrates that the surface Au and Ag atoms arrange in a random fashion.

Source: Nanoscale

DOI: 10.1039/d0nr05061j

Authors: Suiyang Liao, Zhi Luo, Jonas Bastian Metternich, Renato Zenobi, Francesco Stellacci

Institutions: École Polytechnique Fédérale de Lausanne, ETH Zurich

Language: English

Topic: Mass Spectrometry Techniques and Applications

Subfield: Spectroscopy

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Funders: École Polytechnique Fédérale de Lausanne, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

Award: Patchy Particles and Interfaces