Aqueous Solution-Based Fe₃O₄Seed-Mediated Route to Hydrophilic Fe₃O₄−Au Janus Nanoparticles

Chenjing Jin, Yun Qu, Minggui Wang, Jie Han,* Yimin Hu, and Rong Guo*

School of Chemistry and Chemical Engineering, Yangzhou University

Abstract:Hydrophilic Fe₃O₄−Au Janus nanoparticles have been synthesized through a facile aqueous solution-based Fe₃O₄seed-mediated chemical reduction route, where Au nanoparticles can be in situ formed on surfaces of PVP-modified Fe₃O₄nanoparticles 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 nanoparticles have shown excellent catalytic performance with high catalytic activity and recyclability due to the synergetic effect between Au and Fe₃O₄nanoparticles.

文章链接: http://pubs.acs.org/doi/abs/10.1021/acs.langmuir.6b01269

文章附件

Langmuir-2016-32-4595

Langmuir, 2016, 32, 4595−4601.