Science China Materials, volume 65, issue 2, pages 400-412
Boosted charge transfer and photocatalytic CO2 reduction over sulfur-doped C3N4 porous nanosheets with embedded SnS2-SnO2 nanojunctions
Publication type: Journal Article
Publication date: 2021-08-25
Journal:
Science China Materials
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 8.1
ISSN: 20958226, 21994501
General Materials Science
Abstract
Two-dimensional porous nanosheet heterostructure materials, which combine the advantages of both architecture and components, are expected to feature a significant photocatalytic performance toward CO2 conversion into useful fuels. Herein, we provide a facile strategy for fabricating sulfur-doped C3N4 porous nanosheets with embedded SnO2-SnS2 nanojunctions (S-C3N4/SnO2-SnS2) via liquid impregnation-pyrolysis and subsequent sulfidation treatment using a layered supramolecular structure as the precursor of C3N4. A hexagonal layered supramolecular structure was first prepared as the precursor of C3N4. Then Sn4+ ions were intercalated into the supramolecular interlayers through the liquid impregnation method. The subsequent annealing treatment in air simultaneously realized the fabrication and efficient exfoliation of layered C3N4 porous nanosheets. Moreover, SnO2 nanoparticles were formed and embedded in situ in the porous C3N4 nanosheets. In the following sulfidation process under a nitrogen atmosphere, sulfur powder can react with SnO2 nanoparticles to form SnO2-SnS2 nanojunctions. As expected, the exfoliation of sulfur-doped C3N4 porous nanosheets and ternary heterostructure construction could be simultaneously achieved in this work. Sulfur-doped C3N4 porous nanosheets with embedded SnO2-SnS2 nanojunctions featured abundant active sites, enhanced visible light absorption, and efficient interfacial charge transfer. As expected, the optimized S-C3N4/SnO2-SnS2 achieved a much higher gas-phase photocatalytic CO2 reduction performance with high yields of CO (21.68 μmolg−1 h−1) and CH4 (22.09 μmolg−1 h−1) compared with the control C3N4, C3N4/SnO2, and S-C3N4/SnS2 photocatalysts. The selectivity of CH4 reached 80.30%. Such a promising synthetic strategy can be expected to inspire the design of other robust C3N4-based porous nanosheet heterostructures for a broad range of applications.
Top-30
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Citations by publishers
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Elsevier
15 publications, 62.5%
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Springer Nature
5 publications, 20.83%
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2 publications, 8.33%
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1 publication, 4.17%
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1 publication, 4.17%
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- We do not take into account publications without a DOI.
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- Statistics recalculated weekly.
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Chen X. et al. Boosted charge transfer and photocatalytic CO2 reduction over sulfur-doped C3N4 porous nanosheets with embedded SnS2-SnO2 nanojunctions // Science China Materials. 2021. Vol. 65. No. 2. pp. 400-412.
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Chen X., Chen Y., Liu X., Wang Q., Li L., Du L., Tian G. Boosted charge transfer and photocatalytic CO2 reduction over sulfur-doped C3N4 porous nanosheets with embedded SnS2-SnO2 nanojunctions // Science China Materials. 2021. Vol. 65. No. 2. pp. 400-412.
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TY - JOUR
DO - 10.1007/s40843-021-1744-5
UR - https://doi.org/10.1007/s40843-021-1744-5
TI - Boosted charge transfer and photocatalytic CO2 reduction over sulfur-doped C3N4 porous nanosheets with embedded SnS2-SnO2 nanojunctions
T2 - Science China Materials
AU - Chen, Xi
AU - Chen, Yajie
AU - Liu, Xiu
AU - Wang, Qi
AU - Li, Longge
AU - Du, Lizhi
AU - Tian, Guohui
PY - 2021
DA - 2021/08/25 00:00:00
PB - Springer Nature
SP - 400-412
IS - 2
VL - 65
SN - 2095-8226
SN - 2199-4501
ER -
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@article{2021_Chen,
author = {Xi Chen and Yajie Chen and Xiu Liu and Qi Wang and Longge Li and Lizhi Du and Guohui Tian},
title = {Boosted charge transfer and photocatalytic CO2 reduction over sulfur-doped C3N4 porous nanosheets with embedded SnS2-SnO2 nanojunctions},
journal = {Science China Materials},
year = {2021},
volume = {65},
publisher = {Springer Nature},
month = {aug},
url = {https://doi.org/10.1007/s40843-021-1744-5},
number = {2},
pages = {400--412},
doi = {10.1007/s40843-021-1744-5}
}
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Chen, Xi, et al. “Boosted charge transfer and photocatalytic CO2 reduction over sulfur-doped C3N4 porous nanosheets with embedded SnS2-SnO2 nanojunctions.” Science China Materials, vol. 65, no. 2, Aug. 2021, pp. 400-412. https://doi.org/10.1007/s40843-021-1744-5.