Journal
CHEMNANOMAT
Volume 5, Issue 2, Pages 201-207Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cnma.201800514
Keywords
Self-assembly; Dopamine; In situ Fe/N/S-doping; Nanoporous carbon materials; Oxygen reduction reaction
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Funding
- Key Program for International S&T Cooperation Projects of China [2016YFE0125700]
- Shandong Provincial Natural Science Foundation, China [ZR2018BB032]
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In this work, unique structures of mulberry-like Fe/N/S-doped nanoporous carbon materials (NCMs) are synthesized via a simple self-assembly assisted process. The Fe2+-mediated polymerization of dopamine (DA) and further interaction with triblock copolymer F127 micelles induce the formation of mulberry-like Fe/PDA/F127 structures. After carbonization, the Fe/N/S-doped NCMs are obtained with a highly porous structure and large Brunauer-Emmett-Teller (BET) surface area of 913.2 m(2) g(-1). Moreover, DA and iron salt introduce active sites, such as Sp(2) C, graphitic N, pyridinic N, Fe-N-x, C-S-C, etc. Benefiting from these unique structural features and chemical compositions, the optimized Fe/N/S-doped NCMs exhibit enhanced electrocatalytic activity and excellent durability for oxygen reduction reaction (ORR) compared with commercial Pt/C catalyst. These studies provide not only a new synthesis method for heteroatom-doped NCMs, but also a platform for various applications.
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