Fe₃O₄@PANI Hybrid Shell as a Multifunctional Support for Au Nanocatalysts with a Remarkably Improved Catalytic Performance

Chenjing Jin, Jie Han,* Fangyuan Chu, Xiaoxia Wang, and Rong Guo*

School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, Jiangsu, P. R. China

Abstract:

Au@Fe₃O₄@PANI hybrid shells with controllable polyaniline (PANI) coatings as advanced supported catalysts have been fabricated. Specifically, Fe₃O₄and Au nanoparticles were assembled on SiO₂templates, followed by conducting polymer PANI coating, leading to the formation of Au@Fe₃O₄@PANI hybrid shells after the template removal. The resultant supported Au nanocatalysts not only maintain hollow structures but also possess high saturation magnetization (65.46 emu/g). Catalytic tests toward the reduction of 4-nitrophenol in the presence of NaBH₄indicate that PANI and Fe₃O₄not only endow high stability and recyclability but also can largely improve the catalytic activity of Au nanoparticles because of their synergetic effects. It is believed that Fe₃O₄@PANI hybrid shells can be regarded as multifunctional supports for noble metal nanocatalysts with a remarkably improved catalytic performance.

Langmuir, 2017, 33, 4520–4527.

文章链接: http://pubs.acs.org/doi/abs/10.1021/acs.langmuir.7b00640

文章附件：

69-Langmuir-2017-33-4520