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Preparation and Characterization of Magnetic Biochar Nanocomposites via a Modified Solvothermal Method and Their Use as Efficient Heterogeneous Fenton-like Catalysts

文献类型： 外文期刊

作者： Tu, Yuting 1 ; Peng, Zhiping 1 ; Huang, Jichuan 1 ; Wu, Xuena 1 ; Kong, Lingjun 4 ; Liang, Zhixiong 1 ; Yang, Linxiang 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Inst Agr Resources & Environm, Guangzhou, Peoples R China

2.Minist Agr, Guangzhou, Peoples R China

3.Guangdong Key Lab Nutrient Cycling & Farmland Con, Guangzhou, Peoples R China

4.Guangzhou Univ, Guangzhou, Peoples R China

期刊名称：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH （ 影响因子：3.72； 五年影响因子：3.99 ）

ISSN： 0888-5885

年卷期： 2020 年 59 卷 5 期

页码：

收录情况： SCI

摘要： In this study, magnetic biochar nanocomposites (FeC-S) were prepared by employing ethylene glycol as a liquefaction agent of corn stalks and solvent for the solvothermal synthesis approach. The effects of urea/Fe3+ molar ratio, final solvothermal temperature, and residence time on the properties of FeC-S were investigated. Magnetic biochar synthesized through pyrolysis and the chemical co-precipitation method (FeC-P) was employed for comparison. As revealed by Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy/energy-dispersive X-ray spectrometry, vibrating sample magnetometer analysis, and Fenton-like oxidation of sulfamethoxazole, the impregnated iron in FeC-S presented as Fe3O4 nanoparticles with an average grain size of 8.9 nm, which makes the material magnetically separable. The FeC-S exhibited a higher Fenton-like catalytic activity than FeC-P, due to the highly dispersed and smaller crystalline size of loaded Fe3O4 particles, as well as the higher amount of oxygen-containing functional groups. The stability test showed that FeC-S can be easily recycled for five subsequent runs without significant activity loss.

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