Cellulose beads supported CoFe2O4: A novel heterogeneous catalyst for efficient rhodamine B degradation via advanced oxidation processes

被引:21
|
作者
El Allaoui, Brahim [1 ,2 ,3 ]
Benzeid, Hanane [2 ]
Zari, Nadia [1 ,3 ]
Qaiss, Abou el kacem [1 ,3 ]
Bouhfid, Rachid [1 ,3 ]
机构
[1] Moroccan Fdn Adv Sci Innovat & Res MAScIR, Compos & Nanocompos Ctr, Rabat Design Ctr, Rabat, Morocco
[2] Univ Mohammed V Rabat, Fac Med & Pharm, Lab Chim Analyt, Rabat, Morocco
[3] Mohammed VI Polytech Univ, Lot 660 Hay Moulay Rachid, Ben Guerir 43150, Morocco
关键词
CoFe2O4; Cellulose beads; Cobalt ferrite; Peroxymonosulfate; Advanced oxidation process; PEROXYMONOSULFATE ACTIVATION; MAGNETIC COFE2O4; NANOPARTICLES; ATRAZINE; SULFATE; SULFITE;
D O I
10.1016/j.ijbiomac.2023.128893
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
In this study, a novel mechanical process was used to produce cellulose beads (CB). These beads were then doped with cobalt ferrite nanoparticles (CoFe2O4 NPs) to serve as catalysts for the degradation of rhodamine B (RhB) through peroxymonosulfate (PMS) activation. The physical and chemical properties of CoFe2O4 and CoFe2O4@CB catalysts were characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) combined with energy dispersive X-ray spectrometer (EDX), scanning transmission electron microscopy (STEM) techniques, and thermogravimetric analysis (TGA). To optimize RhB degradation efficiency, Response Surface Methodology (RSM) was employed, utilizing the Box-Behnken design (BBD). Under the optimized conditions of a catalyst dosage of 0.40 g/L, PMS dosage of 0.98 mM, RhB concentration of 40 mg/L, pH of 5.27, and reaction time of 60 min, a remarkable degradation efficiency of 98.51 % was achieved at a temperature of 25 degrees C. In quenching experiments, O-1(2), SO4 center dot-, and HO center dot species are produced in the CoFe2O4@CB/PMS system, with O-1(2), and SO4 center dot- species dominating RhB degradation. Remarkably, the new CoFe2O4@CB catalyst has demonstrated exceptional stability and reusability, validated by recycling tests (up to 78 % of RhB degradation efficiency after a 5-cycle experiment) and subsequent characterizations (FTIR, SEM, and EDX) emphasizing unchanged bands, uniform distribution, and consistent composition after reuse cycles. These results demonstrate the effectiveness of mechanically produced CoFe2O4@CB catalysts for advanced oxidation processes (AOPs), with promising applications in wastewater treatment.
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页数:16
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