Chinese Journal of Catalysis ›› 2019, Vol. 40 ›› Issue (7): 1078-1084.DOI: 10.1016/S1872-2067(19)63288-2

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Solid-state CTAB-assisted synthesis of mesoporous Fe3O4 and Au@Fe3O4 by mechanochemistry

Jiahua Zhao, Yuan Shu, Pengfei Zhang   

  1. School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2018-11-29 Revised:2018-12-24 Online:2019-07-18 Published:2019-05-24
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21776174), the Pujiang Talent Plan in Shanghai (17PJ1403500), and the Thousand Talents Plan.

Abstract:

Mesoporous iron oxides have shown excellent performance in many research areas such as catalysts, biosensors, enzyme immobilization, heavy metal adsorption, and drug delivery. The state-of-the-art synthesis methods are mostly wet chemistry processes. This paper reports a solvent-free approach for the rapid synthesis of mesoporous Fe3O4 (specific surface area up to 170 m2/g) and Au@Fe3O4 (highly dispersed Au nanoparticles, average particle size:~4 nm). With different amounts of added template agent, cetyltrimethylammonium bromide (CTAB), the pore structure could easily be adjusted. More importantly, the mesoporous Fe3O4 exhibited good catalytic activity in carbon monoxide (CO) oxidation, outperforming commercially purchased Fe3O4 with 100% CO conversion at around 274℃ vs. 490℃ for the commercial product.

Key words: Mechanochemistry, Mesoporous material, Mesoporous catalyst, Carbon monoxide oxidation, Iron oxide