Dumbbell-like Pt–Fe3O4 Nanoparticles Encapsulated in N‑Doped Carbon Hollow Nanospheres as a Novel Yolk@Shell Nanostructure toward High-Performance Nanocatalysis

• Published in: Langmuir 2019-10, Vol.35 (39), p.12704-12710
• Main Authors: Sun, Jia, Hu, Jun, Han, Jie, Yuan, Ganyin, Guo, Rong
• Format: Article
• Language: English
• ISSN: 0743-7463; 1520-5827
• DOI: 10.1021/acs.langmuir.9b02237

Noble metal–Fe3O4 dumbbell-like nanoparticles have aroused considerable attention because of their high potential as heterogeneous nanocatalysts. The designed synthesis of the advanced architecture of noble metal–Fe3O4 dumbbell-like nanoparticles with both improved catalytic activity and stability is still a challenge. Herein, through the combination of yolk@shell and dumbbell-like nanostructures, dumbbell-like Pt–Fe3O4 nanoparticles encapsulated in N-doped carbon hollow nanospheres (Pt–Fe3O4@N-carbon) as a special yolk@shell nanostructure were developed. In comparison with Pt–Fe3O4 dumbbell-like nanoparticles, Pt–Fe3O4@N-carbon yolk@shell nanoparticles showed improved catalytic activity and stability toward the liquid-phase 4-nitrophenol reduction and β-ionone oxidation, making them a promising candidate for catalysis applications.