Nanoscale-confined precursor of CuFe2O4 mediated by hyperbranched polyamide as an unusual heterogeneous Fenton catalyst for efficient dye degradation. (10th June 2018)

• Record Type: Journal Article
• Authors: Yu, Deyou; Ni, Huagang; Wang, Lili; Wu, Minghua; Yang, Xiaosu
• Is Part Of: Journal of cleaner production. Volume 186(2018)
• Page Start: 146
• Page End: 154
• Publication Date: 2018-06-10
• Subjects: Hyperbranched polyamide -- Confinement -- The precursor of CuFe2O4 -- Heterogeneous Fenton catalyst -- Organic dye; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2018.03.134
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: Dye effluent causes a serious problem to the environment and is of a great concern worldwide. CuFe2 O4 -based heterogeneous Fenton oxidation is considered as a promising approach for efficient dye effluent treatment. However, the high-temperature calcination of CuFe2 O4 makes this technique less applicability. In this study, nanoscale-confined precursor of CuFe2 O4 (NCFOH) was fabricated via a facile coprecipitation method with the confinement of hyperbranched polyamide (MHP) and characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and BET measurement. Its catalytic performance for dye degradation was also tested. Despite of its amorphous structure, NCFOH possesses a much stronger catalytic performance than the precursor of CuFe2 O4 (CFOH) and calcined CuFe2 O4 (CFO) without the mediation of MHP. In addition, NCFOH even shows a similarly catalytic ability with the corresponding calcination (NCFO). The results reveal that particle size and specific surface area may play more important roles than crystalline structure in the catalytic performance. Furthermore, the cycling experiments suggest the high stability and applicability of NCFOH as a reusable catalyst for dye effluent treatment. This work demonstrates that the NCFOH has a potential of widespread commercialization as an excellent heterogeneous Fenton catalyst, and also provides deeper insights into the novel nanoscale-confined approach for fabricating low-cost and efficient catalysts. Graphical abstract: Image 1