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N,S co-doped hierarchically porous carbon materials for efficient metal-free catalysis

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Abstract

Metal-free carbon catalysts with excellent catalytic performance have drawn much research attention recently. Herein, polymer-derived N,S co-doped carbon catalysts (PDNSC-X) with a hierarchically porous structure were facilely prepared by a cost-effective and convenient strategy via carbonization of a N- and S atom-containing polymer precursor and were subsequently used as efficient metal-free catalysts. The catalytic activity of the as-fabricated PDNSC-800 was greater than those of other reported heteroatom-doped carbon catalysts in catalytic reduction of various nitroarenes. The high catalytic activity of PDNSC-800 was related to the synergistic effects of a high surface area, a hierarchically porous structure, abundant N- and S-containing active sites, and defect formation. In addition, the close relationship between the N species (especially pyrrolic N) and high selectivity in metal-free catalytic synthesis was investigated in the reduction of nitroarenes and selective oxidation of ethylbenzene. This study may provide a new strategy to fabricate specific heteroatom-doped metal-free carbon catalysts for environmentally friendly efficient organic transformation.

Graphical abstract: N,S co-doped hierarchically porous carbon materials for efficient metal-free catalysis

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Article information


Submitted
10 Nov 2019
Accepted
18 Dec 2019
First published
19 Dec 2019

Green Chem., 2020, Advance Article
Article type
Paper

N,S co-doped hierarchically porous carbon materials for efficient metal-free catalysis

X. Hu, X. Sun, Q. Song, Y. Zhu, Y. Long and Z. Dong, Green Chem., 2020, Advance Article , DOI: 10.1039/C9GC03863A

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