| Autor: |
Liang, Dan, Fan, Yanfei, Yue, Taixing, Wang, Wen, Shang, Qiaoyan, Chen, Ping, Zhu, Minghui, Liu, Yan, Cui, Guanwei, Tang, Bo |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Frontiers in Environmental Chemistry. 3 |
| ISSN: |
2673-4486 |
| DOI: |
10.3389/fenvc.2022.898879 |
| Popis: |
During the traditional homogeneous Fenton reaction process for water treatment, the consumption rate constant of Fe2+ is much greater than its regeneration rate constant, which makes Fe2+ an almost stoichiometric loss and produces iron sludge waste. In this article, highly dispersed zero-valent Fe nanoparticles loaded on porous carbon materials (Fe-EMC) were synthesized by a one-step calcination method using Flammulina velutipes natural carbon source and Fe(NO3)3 as raw materials to solve the aforementioned problem. The as-prepared Fe-EMC materials are characterized by X-ray diffraction analysis, scanning electron microscopy, electron probe microanalyzer, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, and N2 adsorption–desorption measurements. It exhibits excellent photocatalytic activity for the degradation of methylene blue (MB) dyes under a broad pH region. Under conditions of 0.3 g/L Fe-EMC, 0.2 M/L H2O2, pH 7.0–11.0, and 50 mg/L MB, 97.98% of the MB dyes in the solution were completely degraded within 1 h. It was attributed to the efficient regeneration cycle between Fe2+ and Fe3+ in the Fenton-like system with light irradiation, which can promote the generation of active oxygen species. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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