C3N5/TiO2 S-scheme heterojunction film for efficient photocatalytic removal of gatifloxacin
Source abstract
Abstract
Constructing efficient and recyclable photocatalysts is a promising method to solve antibiotic pollution. Herein, we designed and fabricated C 3N 5/TiO 2 S-scheme heterojunction film on flexible Ti foils through the self-absorbed. The C 3N 5 nanosheet was tightly anchored on the TiO 2 arrays with an intimate TiO 2-C 3N 5 interface. The heterojunction exhibited an excellent photocatalytic performance and the reaction rate constant of photocatalytic degradation gatifloxacin (GAT) over C 3N 5/TiO 2 up to 0.0252 min −1 , which was 1.85 folds that of pure TiO 2 arrays. The outstanding photocatalytic performance was ascribed to high-efficiency transfer and separation of photoinduced carriers and highly hydrophilic surfaces. The removal rate of GAT under different parameters suggested that the as-prepared C 3N 5/TiO 2 has high adaptability. Moreover, the three possible GAT degradation pathways over C 3N 5/TiO 2 were proposed based on the results of the liquid chromatograph-mass spectrometer (LC-MS) and density functional theory (DFT). Finally, a reasonable S-scheme heterojunction was proposed based on the results of experiments and DFT calculation. This work may help in designing an S-scheme heterojunction for the degradation of antibiotic pollutants.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Covalent Organic Framework Applications · Advanced Nanomaterials in Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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