Photocatalytic degradation of naproxen by Bi2MoO6/g-C3N4 heterojunction photocatalyst under visible light: Mechanisms, degradation pathway, and DFT calculation
| Autor: | Jun Shi, Kun Fu, Huiping Deng, Yishuai Pan, Chao Ding |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Naproxen
Chemistry Coprecipitation General Chemical Engineering General Physics and Astronomy Heterojunction 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry Mass spectrometry 01 natural sciences 0104 chemical sciences law.invention law Photocatalysis medicine Degradation (geology) 0210 nano-technology Electron paramagnetic resonance Visible spectrum medicine.drug |
| Zdroj: | Journal of Photochemistry and Photobiology A: Chemistry. 412:113235 |
| ISSN: | 1010-6030 |
| DOI: | 10.1016/j.jphotochem.2021.113235 |
| Popis: | In this research, a 2D/2D Bi2MoO6/g-C3N4 heterojunction photocatalyst, which can be driven by visible light, was fabricated through a hydrothermal coprecipitation method. Naproxen was used as the target organic contaminant to evaluate the photocatalytic performance of Bi2MoO6/g-C3N4. The composite photocatalyst showed promoted photocatalytic activity, among which BMO/CN50−50 with a mass ratio 50/50 exhibited the fastest degradation rate, the degradation rate was 3.9 and 2.5 times higher than that of g-C3N4 and Bi2MoO6, respectively. Scavenger experiments and EPR measurements demonstrated that hole (h+) and superoxide radical ( O2−) play a leading role in the degradation reactions. Moreover, the degradation pathway was suggested in the light of identified intermediates by Liquid Chromatography-Mass Spectrometry (LC–MS/MS) and DFT analysis. Furthermore, the Quantitative Structure-Activity Relationship (QSAR) analysis was used to evaluate the toxicity of identified degradation intermediates. |
| Databáze: | OpenAIRE |
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