Post-functionalization of graphitic carbon nitride for highly efficient photocatalytic hydrogen evolution

被引：3
|
作者：
Yang Y.-L. [1 ]
Li S.-Y. [1 ]
Mao Y.-L. [2 ]
Dang L.-Y. [1 ]
Jiao Z.-F. [1 ]
Xu K.-D. [1 ]
机构：
[1] School of Materials and Chemical Engineering, Henan University of Urban Construction, Pingdingshan
[2] Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan
来源：
Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2023年 / 51卷 / 02期
关键词：
boron-doping; mesoporous structure; photocatalytic hydrogen evolution; post-functionalization;
D O I：
10.1016/S1872-5813(22)60036-7
中图分类号：
学科分类号：
摘要：
In this work we report the feasible modification of graphitic carbon nitride (g-C3N4) polymer through a post-functionalization progress. The resultant photocatalyst exhibits boron doping and mesoporous structure with a high surface area of 125 m2/g, leading in an increased surface activity for photocatalytic water splitting reaction. X-ray diffraction, X-ray photoelectron spectroscopy, PL emission spectra and UV-Vis spectra were used to detect the properties of as-prepared samples. Based on X-ray photoelectron spectroscopy analysis, boron is proposed to dope in the g-C3N4 lattice. Optical studies indicated that boron doped g-C3N4 exhibits enhanced and extended light absorbance in the visible-light region and a much lower intensity of PL emission spectra compared to pure g-C3N4. As a result, boron doped g-C3N4 shows activity of 10.2 times higher than the pristine g-C3N4 for photocatalytic hydrogen evolution. This work may provide a way to design efficient and mesoporous photocatalysts through post modification. © 2023 Science Press. All rights reserved.
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页码：205 / 214
页数：9
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