| Autor: |
Zeng, Ganning, Hong, Chunxian, Ma, Yuan, Du, Mingming, Zhang, Yan, Luo, Hongwei, Chen, Bing, Pan, Xiangliang |
| Předmět: |
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| Zdroj: |
Journal of Chemical Technology & Biotechnology; May2022, Vol. 97 Issue 5, p1267-1274, 8p |
| Abstrakt: |
BACKGROUND During the past two decades, aquatic polycyclic aromatic hydrocarbon (PAH) contamination has gained more and more attention, because of carcinogenicity or mutagenicity, toxicity, persistence and bioaccumulation, and a huge threat posed to entire ecosystems. RESULTS: Sargassum horneri (SH)‐based carbon was pretreated with ethanol and formaldehyde, and obtained after pre‐carbonization using H2SO4. The SH carbon powder was used to immobilize nano‐TiO2 in aquatic environment by a facile sol–gel method. The resulting C/TiO2 catalyst was applied to photocatalytic aquatic naphthalene degradation under sunlight and showed the best naphthalene degradation performance of 83.77% under simulated sunlight, which could be attributed to the shape and structure contribution originating from SH. C/TiO2 served as both adsorbent and catalyst in the degradation process of naphthalene, and the photodegradation process conformed to a double‐exponential kinetic model, indicating that there are physical and chemical processes involved in the degradation. The mechanism for enhanced photocatalytic activity was verified as a synergistic mechanism resulting from SH‐based carbon and TiO2, and showed industrial potential for removal aquatic PAH pollutants. CONCLUSIONS: This study verifies that the synergistic effect resulting from SH‐based carbon and TiO2 enhanced the photocatalytic performance. © 2021 Society of Chemical Industry (SCI). [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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