Construction of a C-decorated and Cu-doped (Fe,Cu)S/CuFe_2O_4 solid solution for photo-Fenton degradation of hydrophobic organic contaminant: Enhanced electron transfer and adsorption capacity

Cai Xiunan; Tian Ling; Chen MeifeiLiu YijunWang WeiLong JunhaoZhang YanjuanTao GanHu HuayuHuang Zuqiang

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Construction of a C-decorated and Cu-doped (Fe,Cu)S/CuFe_2O_4 solid solution for photo-Fenton degradation of hydrophobic organic contaminant: Enhanced electron transfer and adsorption capacity

机译：Construction of a C-decorated and Cu-doped (Fe,Cu)S/CuFe_2O_4 solid solution for photo-Fenton degradation of hydrophobic organic contaminant: Enhanced electron transfer and adsorption capacity

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摘要

To effectively treat the hydrophobic organic contaminant and utilize an industrial solid waste manganese residue (MR), a novel starch-derived carbon (SC)-decorated and Cu-doped (Fe,Cu)S/CuFe2O4 solid solution (CFS/ CFO@SC) was prepared from MR via mechanical activation treatment of precursor materials followed by onestep pyrolysis and applied as a photo-Fenton catalyst to treat a hydrophobic organic compound, 17 alpha-ethiny-lestradiol (EE2). Characterization results showed that the CFS/CFO@SC solid solution with unique crystal and electronic structures exhibited high adsorption capacity and catalytic activity, ascribed to that Cu doping and C decorating enhanced its hydrophobicity and BET surface area. The CFS/CFO@SC showed excellent degradation efficiency with nearly 100 of EE2 removal rate in 40 min (degradation rate constant of 0.112 min 1), and a high mineralization degree with 95.2 of TOC removal in 180 min. This could be ascribed to that C decorating and the formation of CFS/CFO solid solution promoted the charge transfer in a continuous band, resulting in effective separation of photogenerated holes-electrons (h(+)-e(-)). The strong interaction of Fe-Cu collaborating with the photoelectron could effectively accelerate the recycle of Fe3+/Fe2+ and Cu2+/Cu+, thus generating more active radicals. Moreover, CFS/CFO@SC showed promising stability and recyclability with the EE2 removal rates all 95 after five cycles. This work brings a valuable approach for the rational design of high-performance Fe based photo-Fenton catalysts for environmental remediation and the valorization of MR.

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来源
《Chemosphere》 |2022年第6期|134005.1-134005.13|共13页
作者
Cai Xiunan; Tian Ling; Chen MeifeiLiu YijunWang WeiLong JunhaoZhang YanjuanTao GanHu HuayuHuang Zuqiang;
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作者单位

Guangxi Univ, Sch Chem & Chem Engn, Nanning 530004, Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
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Fe-based solid solution; Hydrophobic organic contaminant; Photo-Fenton; Efficient electron transfer; High adsorption capacity;

Construction of a C-decorated and Cu-doped (Fe,Cu)S/CuFe_2O_4 solid solution for photo-Fenton degradation of hydrophobic organic contaminant: Enhanced electron transfer and adsorption capacity

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