Continuous gas-phase synthesis of core-shell nanoparticles via surface segregation.

ABSTRACT: Synthesis methods of highly functional core@shell nanoparticles with high throughput and high purity are in great demand for applications, including catalysis and optoelectronics. Traditionally chemical synthesis has been widely explored, but recently, gas-phase methods have attracted attention since such methods can provide a more flexible choice of materials and altogether avoid solvents. Here, we demonstrate that Cu@Ag core-shell nanoparticles with well-controlled size and compositional variance can be generated via surface segregation using spark ablation with an additional heating step, which is a continuous gas-phase process. The characterization of the nanoparticles reveals that the Cu-Ag agglomerates generated by spark ablation adopt core-shell or quasi-Janus structures depe

SUBMITTER: Snellman M 

PROVIDER: S-EPMC9419486 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature