In:
Journal of Physics D: Applied Physics, IOP Publishing, Vol. 55, No. 48 ( 2022-12-01), p. 484002-
Abstract:
Nitrogen-rich graphite carbon nitride has attracted considerable attention due to its low band gap and widespread potential application. Herein, a series of porous g-C 3 N 4+ x materials are developed by pyrolysis of 3-amino-1, 2, 4-triazole (C 2 H 4 N 4 ) and mesoporous silica template (KIT-6). The pore diameters can be precisely tuned by controlling the proportion of C 2 H 4 N 4 and KIT-6. A variety of characterizations were conducted to analyze the correlation between structure and photocatalytic performance toward the degradation of rhodamine B. It was found that, the synthesized porous g-C 3 N 4+ x exhibited a narrower band gap of 1.43 eV, which significantly extended its visible-light responsive range. Moreover, the enhanced N content and adjustable porous diameter effectively increased the separation efficiency of photogenerated electron–hole pairs. Therefore, remarkably improved photocatalytic activity was achieved, which was 5.2 times higher than that of bulk g-C 3 N 4+ x , and presented super stability as well. Additionally, the possible photocatalytic mechanism was proposed and verified. These findings shed light on a new facile way to fabricate high-performance photocatalytic materials and provided new opportunities for environmental remediation.
Type of Medium:
Online Resource
ISSN:
0022-3727
,
1361-6463
DOI:
10.1088/1361-6463/ac962e
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2022
detail.hit.zdb_id:
209221-9
detail.hit.zdb_id:
1472948-9
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