Precursor-reforming strategy induced g-C                         3                         N                         4                          microtubes with spatial anisotropic charge separation established by conquering hydrogen bond for enhanced photocatalytic H                         2                         -production performance

Huinan Che; Guangbo Che; Pengjie Zhou; Ning Song; Chunxue Li; Chunmei Li; Chunbo Liu; Xiaoteng Liu; Hongjun Dong

doi:10.1016/j.jcis.2019.03.106

Precursor-reforming strategy induced g-C ₃ N ₄ microtubes with spatial anisotropic charge separation established by conquering hydrogen bond for enhanced photocatalytic H ₂ -production performance

Huinan Che, Guangbo Che, Pengjie Zhou, Ning Song, Chunxue Li, Chunmei Li, Chunbo Liu^*, Xiaoteng Liu, Hongjun Dong

^*Corresponding author for this work

Mechanical and Construction Engineering Department

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

Precursor-reforming strategy induced graphitic carbon nitride (g-C ₃ N ₄ ) with different morphologies for enhanced photocatalytic hydrogen (H ₂ ) evolution activity is highly desirable. Herein, g-C ₃ N ₄ microtubes (mg-C ₃ N ₄ ) with adjustable closure degree of microtube orifice and spatial anisotropic charge separation are established by conquering hydrogen bond during thermally exfoliate precursor. Compared to the bulk g-C ₃ N ₄ (bg-C ₃ N ₄ ) and ultrathin g-C ₃ N ₄ (ug-C ₃ N ₄ ), the tubular structure endows mg-C ₃ N ₄ with spatial anisotropic charge separation that accelerates transfer of charge carriers. As expected, the photocatalytic H ₂ evolution (PHE) activity of mg-C ₃ N ₄ has been obviously enhanced. Particularly, the mg-C ₃ N ₄ -24 shows the best PHE activity (957.9 μmol h ⁻¹ g ⁻¹ ), which is over 18.72 and 3.77 times higher than the bg-C ₃ N ₄ and ug-C ₃ N ₄ , respectively. In addition, selective photo-deposition experiment results reveal a charge carriers migration behavior that photoproduction electrons migrate to the outer shell and holes prefer to move onto the inner shell of mg-C ₃ N ₄ , thus achieving efficient spatial anisotropic charge separation. We firmly believe that the work presents significant advancement for the design of other materials by precursor-reforming strategy.

Original language	English
Pages (from-to)	224-233
Number of pages	10
Journal	Journal of Colloid and Interface Science
Volume	547
Early online date	1 Apr 2019
DOIs	https://doi.org/10.1016/j.jcis.2019.03.106
Publication status	Published - 1 Jul 2019

Keywords

Charge carriers
mg-C N
PHE
Precursor-reforming
Spatial anisotropic

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jcis.2019.03.106

Cite this

Che, H., Che, G., Zhou, P., Song, N., Li, C., Li, C., Liu, C., Liu, X., & Dong, H. (2019). Precursor-reforming strategy induced g-C ₃ N ₄ microtubes with spatial anisotropic charge separation established by conquering hydrogen bond for enhanced photocatalytic H ₂ -production performance. Journal of Colloid and Interface Science, 547, 224-233. https://doi.org/10.1016/j.jcis.2019.03.106

Che, Huinan ; Che, Guangbo ; Zhou, Pengjie et al. / Precursor-reforming strategy induced g-C ₃ N ₄ microtubes with spatial anisotropic charge separation established by conquering hydrogen bond for enhanced photocatalytic H ₂ -production performance. In: Journal of Colloid and Interface Science. 2019 ; Vol. 547. pp. 224-233.

@article{479cd615f5f5456c862557ac39481f0e,

title = "Precursor-reforming strategy induced g-C 3 N 4 microtubes with spatial anisotropic charge separation established by conquering hydrogen bond for enhanced photocatalytic H 2 -production performance",

abstract = " Precursor-reforming strategy induced graphitic carbon nitride (g-C 3 N 4 ) with different morphologies for enhanced photocatalytic hydrogen (H 2 ) evolution activity is highly desirable. Herein, g-C 3 N 4 microtubes (mg-C 3 N 4 ) with adjustable closure degree of microtube orifice and spatial anisotropic charge separation are established by conquering hydrogen bond during thermally exfoliate precursor. Compared to the bulk g-C 3 N 4 (bg-C 3 N 4 ) and ultrathin g-C 3 N 4 (ug-C 3 N 4 ), the tubular structure endows mg-C 3 N 4 with spatial anisotropic charge separation that accelerates transfer of charge carriers. As expected, the photocatalytic H 2 evolution (PHE) activity of mg-C 3 N 4 has been obviously enhanced. Particularly, the mg-C 3 N 4 -24 shows the best PHE activity (957.9 μmol h −1 g −1 ), which is over 18.72 and 3.77 times higher than the bg-C 3 N 4 and ug-C 3 N 4 , respectively. In addition, selective photo-deposition experiment results reveal a charge carriers migration behavior that photoproduction electrons migrate to the outer shell and holes prefer to move onto the inner shell of mg-C 3 N 4 , thus achieving efficient spatial anisotropic charge separation. We firmly believe that the work presents significant advancement for the design of other materials by precursor-reforming strategy. ",

keywords = "Charge carriers, mg-C N, PHE, Precursor-reforming, Spatial anisotropic",

author = "Huinan Che and Guangbo Che and Pengjie Zhou and Ning Song and Chunxue Li and Chunmei Li and Chunbo Liu and Xiaoteng Liu and Hongjun Dong",

year = "2019",

month = jul,

day = "1",

doi = "10.1016/j.jcis.2019.03.106",

language = "English",

volume = "547",

pages = "224--233",

journal = "Journal of Colloid and Interface Science",

issn = "0021-9797",

publisher = "Academic Press",

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Che, H, Che, G, Zhou, P, Song, N, Li, C, Li, C, Liu, C, Liu, X & Dong, H 2019, 'Precursor-reforming strategy induced g-C ₃ N ₄ microtubes with spatial anisotropic charge separation established by conquering hydrogen bond for enhanced photocatalytic H ₂ -production performance', Journal of Colloid and Interface Science, vol. 547, pp. 224-233. https://doi.org/10.1016/j.jcis.2019.03.106

Precursor-reforming strategy induced g-C ₃ N ₄ microtubes with spatial anisotropic charge separation established by conquering hydrogen bond for enhanced photocatalytic H ₂ -production performance. / Che, Huinan; Che, Guangbo; Zhou, Pengjie et al.
In: Journal of Colloid and Interface Science, Vol. 547, 01.07.2019, p. 224-233.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Precursor-reforming strategy induced g-C 3 N 4 microtubes with spatial anisotropic charge separation established by conquering hydrogen bond for enhanced photocatalytic H 2 -production performance

AU - Che, Huinan

AU - Che, Guangbo

AU - Zhou, Pengjie

AU - Song, Ning

AU - Li, Chunxue

AU - Li, Chunmei

AU - Liu, Chunbo

AU - Liu, Xiaoteng

AU - Dong, Hongjun

PY - 2019/7/1

Y1 - 2019/7/1

N2 - Precursor-reforming strategy induced graphitic carbon nitride (g-C 3 N 4 ) with different morphologies for enhanced photocatalytic hydrogen (H 2 ) evolution activity is highly desirable. Herein, g-C 3 N 4 microtubes (mg-C 3 N 4 ) with adjustable closure degree of microtube orifice and spatial anisotropic charge separation are established by conquering hydrogen bond during thermally exfoliate precursor. Compared to the bulk g-C 3 N 4 (bg-C 3 N 4 ) and ultrathin g-C 3 N 4 (ug-C 3 N 4 ), the tubular structure endows mg-C 3 N 4 with spatial anisotropic charge separation that accelerates transfer of charge carriers. As expected, the photocatalytic H 2 evolution (PHE) activity of mg-C 3 N 4 has been obviously enhanced. Particularly, the mg-C 3 N 4 -24 shows the best PHE activity (957.9 μmol h −1 g −1 ), which is over 18.72 and 3.77 times higher than the bg-C 3 N 4 and ug-C 3 N 4 , respectively. In addition, selective photo-deposition experiment results reveal a charge carriers migration behavior that photoproduction electrons migrate to the outer shell and holes prefer to move onto the inner shell of mg-C 3 N 4 , thus achieving efficient spatial anisotropic charge separation. We firmly believe that the work presents significant advancement for the design of other materials by precursor-reforming strategy.

AB - Precursor-reforming strategy induced graphitic carbon nitride (g-C 3 N 4 ) with different morphologies for enhanced photocatalytic hydrogen (H 2 ) evolution activity is highly desirable. Herein, g-C 3 N 4 microtubes (mg-C 3 N 4 ) with adjustable closure degree of microtube orifice and spatial anisotropic charge separation are established by conquering hydrogen bond during thermally exfoliate precursor. Compared to the bulk g-C 3 N 4 (bg-C 3 N 4 ) and ultrathin g-C 3 N 4 (ug-C 3 N 4 ), the tubular structure endows mg-C 3 N 4 with spatial anisotropic charge separation that accelerates transfer of charge carriers. As expected, the photocatalytic H 2 evolution (PHE) activity of mg-C 3 N 4 has been obviously enhanced. Particularly, the mg-C 3 N 4 -24 shows the best PHE activity (957.9 μmol h −1 g −1 ), which is over 18.72 and 3.77 times higher than the bg-C 3 N 4 and ug-C 3 N 4 , respectively. In addition, selective photo-deposition experiment results reveal a charge carriers migration behavior that photoproduction electrons migrate to the outer shell and holes prefer to move onto the inner shell of mg-C 3 N 4 , thus achieving efficient spatial anisotropic charge separation. We firmly believe that the work presents significant advancement for the design of other materials by precursor-reforming strategy.

KW - Charge carriers

KW - mg-C N

KW - PHE

KW - Precursor-reforming

KW - Spatial anisotropic

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DO - 10.1016/j.jcis.2019.03.106

M3 - Article

C2 - 30954766

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SN - 0021-9797

VL - 547

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JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

ER -

Che H, Che G, Zhou P, Song N, Li C, Li C et al. Precursor-reforming strategy induced g-C ₃ N ₄ microtubes with spatial anisotropic charge separation established by conquering hydrogen bond for enhanced photocatalytic H ₂ -production performance. Journal of Colloid and Interface Science. 2019 Jul 1;547:224-233. Epub 2019 Apr 1. doi: 10.1016/j.jcis.2019.03.106