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author:

Zhang, G. (Zhang, G..) [1] | Liu, F. (Liu, F..) [2] | Zhu, Q. (Zhu, Q..) [3] | Qian, H. (Qian, H..) [4] | Zhong, S. (Zhong, S..) [5] (Scholars:钟守超) | Tan, J. (Tan, J..) [6] | Zheng, A. (Zheng, A..) [7] | Jiang, L. (Jiang, L..) [9] (Scholars:江莉龙)

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Abstract:

Herein, a variety of 2,6-diaminopyridine (DAP) derived nitrogen-doped hierarchically porous carbon (DAP-NHPC-T) prepared from carbonization-induced structure transformation of DAP-Zn-SiO2-P123 nanocomposites are reported, which are facilely prepared from solvent-free co-assembly of block copolymer templates P123 with pyridine-rich monomer of DAP, Zn(NO3)2 and tetramethoxysilane. In the pyrolysis process, P123 and SiO2 templates promote the formation of mesoporous and supermicroporous structures in the DAP-NHPC-T, while high-temperature volatilization of Zn contributed to generation of micropores. The DAP-NHPC-T possess large BET surface areas (≈956–1126 m2 g−1), hierarchical porosity with micro-supermicro-mesoporous feature and high nitrogen contents (≈10.44–5.99 at%) with tunable density of pyridine-based nitrogen sites (≈5.99–3.32 at%), exhibiting good accessibility and reinforced interaction with SO2. Consequently, the DAP-NHPC-T show high SO2 capacity (14.7 mmol g−1, 25 °C and 1.0 bar) and SO2/CO2/N2 IAST selectivities, extraordinary dynamic breakthrough separation efficiency and cycling stability, far beyond any other reported nitrogen-doped metal-free carbon. As verified by in situ spectroscopy and theoretical calculations, the pyridine-based nitrogen sites of the DAP-NHPC-T boost SO2 adsorption via the unique charge transfer, the adsorption mechanism and reaction model have been finally clarified. © 2024 Wiley-VCH GmbH.

Keyword:

charge transfer hierarchical porosity pyridine-based nitrogen sites SO2 capture triple template directed synthesis

Community:

  • [ 1 ] [Zhang G.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fujian, Fuzhou, 350002, China
  • [ 2 ] [Zhang G.]Qingyuan Innovation Laboratory, Fujian, Quanzhou, 362801, China
  • [ 3 ] [Liu F.]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Hubei, Wuhan, 430071, China
  • [ 4 ] [Zhu Q.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fujian, Fuzhou, 350002, China
  • [ 5 ] [Qian H.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fujian, Fuzhou, 350002, China
  • [ 6 ] [Zhong S.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fujian, Fuzhou, 350002, China
  • [ 7 ] [Zhong S.]Qingyuan Innovation Laboratory, Fujian, Quanzhou, 362801, China
  • [ 8 ] [Tan J.]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Hubei, Wuhan, 430071, China
  • [ 9 ] [Zheng A.]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Hubei, Wuhan, 430071, China
  • [ 10 ] [Liu F.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fujian, Fuzhou, 350002, China
  • [ 11 ] [Liu F.]Qingyuan Innovation Laboratory, Fujian, Quanzhou, 362801, China
  • [ 12 ] [Jiang L.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fujian, Fuzhou, 350002, China
  • [ 13 ] [Jiang L.]Qingyuan Innovation Laboratory, Fujian, Quanzhou, 362801, China

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Small

ISSN: 1613-6810

Year: 2024

Issue: 46

Volume: 20

1 3 . 0 0 0

JCR@2023

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ESI Highly Cited Papers on the List: 0 Unfold All

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Chinese Cited Count:

30 Days PV: 1

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