| Autor: |
Pan, Xiaofang1 (AUTHOR), Zhu, Ruiying1 (AUTHOR), Zhao, Li1 (AUTHOR), Ma, Hong1 (AUTHOR), Qiu, Zifeng1 (AUTHOR), Gong, Xiaobo1,2,3 (AUTHOR) gxb@sicnu.edu.cn, Sun, Mingchao1,2,3 (AUTHOR) 20160001@sicnu.edu.cn |
| Předmět: |
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| Zdroj: |
Environmental Research. Oct2024, Vol. 258, pN.PAG-N.PAG. 1p. |
| Abstrakt: |
Novel catalysts with multiple active sites and rapid separation are required to effectively activate peroxymonosulfate (PMS) for the removal of organic pollutants from water. Therefore, an integrated catalyst for PMS activation was developed by directly forming Co–Fe Prussian blue analogs on a three-dimensional porous nickel foam (NF), which were subsequently phosphorylated to obtain cobalt-iron bimetallic phosphide (FeCoP@NF). The FeCoP@NF/PMS system efficiently degraded dye wastewater within 20 min. The system exhibited excellent catalytic degradation over a broad pH range and at high dye concentrations due to the presence of unique asymmetrically charged Coa+ and Pb− dual active sites formed by cobalt phosphides within FeCoP@NF. These active sites significantly enhanced the catalytic activity of PMS. The activation mechanism of PMS involves phosphorylation that accelerates electron transfer from FeCoP@NF to PMS, to generate SO 4 ·–, ·OH, O 2 ·–, and 1O 2 active species. Three-dimensional FeCoP@NF could be readily recycled and showed good stability for PMS activation. In this study, a highly efficient, stable, and readily recyclable integrated catalyst was developed. This catalyst system effectively resolves the separation and recovery issues associated with conventional powder catalysts and has a wide range of potential applications in wastewater treatment. [Display omitted]. • FeCoP@NF could efficiently activate peroxymonosulfate for dyes degradation. • FeCoP@NF exceled across various pH levels and high RhB concentrations. • Cobalt phosphide in FeCoP@NF forms Coa+ and Pb− for enhanced oxidation. • FeCoP@NF showcased exceptional stability and recyclability. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
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