Aqueous Solution-Based Fe3O4 Seed-Mediated Route to Hydrophilic Fe3O4-Au Janus Nanoparticles

作者：Jin, Chenjing; Qu, Yun; Wang, Minggui; Han, Jie^*; Hu, Yimin; Guo, Rong^*

来源：Langmuir, 2016, 32(18): 4595-4601.

DOI：10.1021/acs.langmuir.6b01269

• GOLD NANOPARTICLES
• CATALYTIC-PROPERTIES
• AU-FE3O4
• SIZE
• HETERODIMERS
• REDUCTION
• AU/FE3O4

Hydrophilic Fe3O4-Au Janus nanopartides have been synthesized through a facile aqueous solution-based Fe3O4 seed-mediated chemical reduction route, where Au nanoparticles can be in situ formed on surfaces of PVP-modified Fe3O4 nanoparticles by adopting the well-known citrate reduction route. The diameter of Au nanoparticles can be controllably tuned in the range of 3-12 nm by simply changing the initial molar ratio between Sodium citrate and auric acid. The as-fabricated hydrophilic Fe3O4-Au Janus naimpartides have shown excellent catalytic performance with high catalytic activity and recyclability due to the synergetic effect between Au and Fe3O4 nanoparticles.

• 出版日期2016-5-10
• 单位扬州大学