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- Title
The Construction of an α-F 2 O 3 /Tubular g-C 3 N 4 Z-Scheme Heterojunction Catalyst for the Efficient Photocatalytic Degradation of Tetracycline.
- Authors
Xu, Feng; Zhang, Kai; Li, Kun; Ju, Hao; Xue, Qian; Qi, Xueqiang; Jiang, Jinxia
- Abstract
Morphological engineering and semiconductor coupling show significant potential to increase the photocatalytic performance of graphite carbon nitride (g-C3N4). In this work, a unique Z-scheme heterojunction photocatalyst composed of tubular g-C3N4 (TCN) and α-F2O3 was successfully synthesized. Combining the experimental results and characterization, we extensively investigated the charge transfer mechanism of the α-F2O3/tubular g-C3N4 (FO-TCN) heterojunctions and processes in the photocatalytic degradation of tetracycline (TC). The tubular morphology provided a larger specific surface area, enhancing the light absorption area and thus improving the exposure of the active sites. Not only was the light absorption range expanded through the coupling with α-F2O3, but the charge transfer properties of the sample were also strengthened. The synergism between photocatalysis and the Fenton reaction enhanced the photocatalytic performance of the FO-TCN. Due to the previously mentioned beneficial factors, the performance of the FO-TCN photocatalyst was significantly increased; its reaction rate k value in the degradation of TC (0.0482 min−1) was 4.05 times faster than that of single g-C3N4 and it exhibited the best photocatalytic performance (95.02%) for the degradation of TC in 60 min, with an enhancement of 38.41%. Quenching experiments showed that h+ and ·O2− were the major active substances in the photocatalytic degradation process.
- Subjects
PHOTODEGRADATION; HETEROJUNCTIONS; PHOTOCATALYSIS; TETRACYCLINE; TETRACYCLINES; CHARGE transfer; HABER-Weiss reaction
- Publication
Coatings (2079-6412), 2023, Vol 13, Issue 11, p1909
- ISSN
2079-6412
- Publication type
Article
- DOI
10.3390/coatings13111909