期刊
NANOMATERIALS
卷 12, 期 15, 页码 -出版社
MDPI
DOI: 10.3390/nano12152701
关键词
n-C3N5; Ag2CO3; photocatalysts; Z-scheme heterojunction; methylene blue; tetracycline hydrochloride; water remediation
类别
资金
- National Natural Science Foundation of China [51979294, 51909284]
- Natural Science Foundation of Hunan Province [2019JJ51005]
- Training Program for Excellent Young Innovators of Changsha [kq1905064]
- Natural Science Foundation of Changsha City [kq2202276]
The study presented the synthesis of C3N5 nanosheet/Ag2CO3 nanocomposites (CNAC-X) as efficient photocatalysts for the visible-light-driven degradation of methylene blue and tetracycline hydrochloride. Due to the synergistic effect of nanosheet structures, carbon defects, and Z-scheme heterojunctions, CNAC-10 exhibited the highest photocatalytic activity.
The development of novel catalysts for degrading organic contaminants in water is a current hot topic in photocatalysis research for environmental protection. In this study, C3N5 nanosheet/Ag2CO3 nanocomposites (CNAC-X) were used as efficient photocatalysts for the visible-light-driven degradation of methylene blue (MB), and tetracycline hydrochloride (TC-HCl) was synthesized for the first time using a simple thermal oxidative exfoliation and in situ deposition method. Due to the synergistic effect of nanosheet structures, carbon defects, and Z-scheme heterojunctions, CNAC-10 exhibited the highest photocatalytic activity, with photodegradation efficiencies of 96.5% and 97.6% for MB (60 mg/L) and TC-HCl (50 mg/L) within 90 and 100 min, respectively. The radical trapping experiments showed that center dot O-2(-) and h(+) played major roles in the photocatalytic effect of the CNAC-10 system. Furthermore, intermediates in the photodegradation of MB and TC-HCl were investigated to determine possible mineralization pathways. The results indicated that C3N5 nanosheet/Ag2CO3 photocatalysts prepared in this work could provide an effective reference for the treatment of organic wastewater.
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