期刊
CHEMICAL ENGINEERING JOURNAL
卷 447, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2022.137332
关键词
Supramolecule; Photocatalysis; Mesoporous filling; Theoretical calculation
资金
- Program for Changjiang Scholars and Innovative Research Team in University [IRT-13R17]
- Natural Science Foundation of China [51979103, 51909085, 51579096, 51521006, 51508177]
- Funds of Hunan Science and Technology Innovation Project [2018RS3115, 2020RC5012]
- Key Research and Development Project of Hunan Province of China [2017SK2241]
- China Postdoctoral Science Foundation [2021T140192, 2021M690054]
The hollow part with macroporous size in hollow tubular g-C3N4 is difficult to function in photochemical reactions. To address this issue, tubular g-C3N4 with mesoporous-rich non-hollow filling was prepared, which increased reactive sites, enhanced visible light response, and facilitated charge separation and transfer.
The problem that the hollow part with macroporous size in the hollow tubular g-C3N4 is difficult to function in photochemical reactions has been neglected for a long time. To address this issue, tubular g-C3N4 with mesoporous-rich non-hollow ant nest-like filling (AN-TCN) was prepared by calcining supramolecular precursors impregnated with hydrogen peroxide solution. The endogenous gas released from the wet rod-like supramolecular precursor during thermal polymerization contributed to the construction of a mesoporous filling structure inside the AN-TCN, which not only increased the reactive sites, but also enhanced the ability of visible light response and facilitated the separation and transfer of photoinduced charges. Experiments and theoretical calculations were conduct together to reveal the physicochemical characteristics of AN-TCN. The photocatalytic capacity of AN-TCN-4.5 for tetracycline hydrochloride (TCH) reached to 86 % under visible radiation within 30 min. This study afforded a new thinking and strategy for morphology regulation and performance optimization of g-C3N4-based photocatalyst.
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