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Temperature-directed synthesis of N-doped carbon-based nanotubes and nanosheets decorated with Fe (Fe3O4, Fe3C) nanomaterials

Abstract

Coupling of N-doped carbon materials with transition-metal-based materials has great promise for electrochemical energy conversion and storage. However, it is still a big challenge to achieve high-performance carbon-based composites with simplified preparation process and general synthesis strategy. Herein, a facile and efficient one-pot synthetic strategy was developed for the simultaneous preparation of N-doped one-dimensional carbon nanotubes-based hybrids and two-dimensional carbon nanosheets-based hybrids through temperature-directed fabrication. A mixture containing dicyandiamide (DCDA), glucose, and FeCl3·6H2O was used as precursors. The C3N4, derived from pyrolysis of DCDA, acted as not only the self-sacrificing template to guide the formation of distinct shape and structure of the hybrids, but also as the N and C source for N-doped carbon materials. Meanwhile, the FeCl3·6H2O was served both as the catalyst to induce the transformation of structure and as the reactive template afford Fe reservoir to generate various Fe species. Effects of temperature on the structure and morphology as well as the corresponding electrochemical performance of the hybrids were further studied in detail. Moreover, the as-prepared products demonstrated good capacitive performance. This work provides a good guidance for facile and efficient preparation of N-doped carbon-based materials with distinct shape and structure.

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Publication details

The article was received on 21 Feb 2019, accepted on 09 Apr 2019 and first published on 10 Apr 2019


Article type: Paper
DOI: 10.1039/C9NR01601E
Citation: Nanoscale, 2019, Accepted Manuscript

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    Temperature-directed synthesis of N-doped carbon-based nanotubes and nanosheets decorated with Fe (Fe3O4, Fe3C) nanomaterials

    J. Liu, X. Kang, X. He, P. Wei, Y. Wen and X. Li, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR01601E

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