Nano CuO immobilized fly ash zeolite Fenton-like catalyst for oxidative degradation of p -nitrophenol and p -nitroaniline

Subbulekshmi, N.L.; Subramanian, E.

doi:10.1016/j.jece.2017.02.019

Cited by 60 publications

(14 citation statements)

References 58 publications

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“…According to our results (Figures 5 and 8) and based on previous reports of the metal oxides in heterogeneous Fenton-like reactions [40][41][42][43], the possible formation pathways of reactive oxidizing species can be explained as follows: 3) and ( 4)), respectively, where Mn 2þ and Mn 3þ represent Mn(II) and Mn(III) sites on the catalyst surface.…”

Section: The Implication Of Reactive Oxidizing Speciessupporting

confidence: 77%

Highly efficient catalytic degradation of p-nitrophenol by Mn₃O₄.CuO nanocomposite as a heterogeneous fenton-like catalyst

Nekoeinia

Yousefinejad

Hasanpour

et al. 2020

Journal of Experimental Nanoscience

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In this work, nano-sized mixed oxides of Mn 3 O 4 and CuO were successfully prepared by a simple hydrothermal method and used as an effective heterogeneous sono-Fenton catalyst for p-nitrophenol (PNP) degradation at the neutral condition. The prepared nanocomposite was characterised by X-ray diffraction (XRD), fieldemission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR) and N 2 adsorption-desorption analysis. The results showed that the Mn 3 O 4 .CuO nanocomposite can catalyze efficiently the decomposition of PNP under ultrasonic irradiation in comparison with pristine Mn 3 O 4 and CuO. The almost complete degradation of PNP was achieved within 20 min at pH 8.0 by using 0.1 mol/L of H 2 O 2 and 0.01 g of the catalyst. Also, the stability and reusability test showed that the prepared nanocomposite had good stability during the Fenton process. Finally, the main oxidative species involved in the sono-Fenton process based on the results of radical species trapping experiments were identified.

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Section: The Implication Of Reactive Oxidizing Speciessupporting

confidence: 77%

Highly efficient catalytic degradation of p-nitrophenol by Mn₃O₄.CuO nanocomposite as a heterogeneous fenton-like catalyst

Nekoeinia

Yousefinejad

Hasanpour

et al. 2020

Journal of Experimental Nanoscience

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“…Table 5, Table 6 and Table 7 exhibit the results obtained for PHE, PNP and PAP at two reaction times as a function of the activity of the phenolic compound. The appearance of these reaction intermediates can be explained by taking account of the activated aromatic ring positions against HO • electrophilic attack and results published in the literature [29,30,31,32,33,34].…”

Section: Resultsmentioning

confidence: 99%

Removal of Phenolic Compounds from Water Using Copper Ferrite Nanosphere Composites as Fenton Catalysts

et al. 2019

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Copper ferrites containing Cu+ ions can be highly active heterogeneous Fenton catalysts due to synergic effects between Fe and Cu ions. Therefore, a method of copper ferrite nanosphere (CFNS) synthesis was selected that also permits the formation of cuprite, obtaining a CFNS composite that was subsequently calcined up to 400 °C. Composites were tested as Fenton catalysts in the mineralization of phenol (PHE), p-nitrophenol (PNP) and p-aminophenol (PAP). Catalysts were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and magnetic measurements. Degradation of all phenols was practically complete at 95% total organic carbon (TOC) removal. Catalytic activity increased in the order PHE < PNP < PAP and decreased when the calcination temperature was raised; this order depended on the electronic effects of the substituents of phenols. The as-prepared CFNS showed the highest catalytic activity due to the presence of cubic copper ferrite and cuprite. The Cu+ surface concentration decreased after calcination at 200 °C, diminishing the catalytic activity. Cuprite alone showed a lower activity than the CFNS composite and the homogeneous Fenton reaction had almost no influence on its overall activity. CFNS activity decreased with its reutilization due to the disappearance of the cuprite phase. Degradation pathways are proposed for the phenols.

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“…[241][242][243][244] . Silica NPs help in remediation of lead [245][246][247][248][249] , zinc NPs for CS 2 from air and nanocrystalline hydroxyl-apatite for removing lead and cadmium, zerovalent nanoiron, CNTs, fullerenes, TiO 2 and ZnO NPs, and bimetallic nano-metals for remediation of DDT, carbamates, heavy metals like chromium, lead, arsenic and cadmium from soil 250,251 . Biologically synthesized Iron NPs and Iron-Pd NPs have shown wider application in treatment of dyes, hydrocarbons, 2,3,7,8-tetrachlorodibenzo-p dioxin, pesticides,TCE PCB and Lindane etc using bacterial metabolism [252][253][254] .…”

Section: Nano-bioremediationmentioning

confidence: 99%

Prospects of Nanobioremediation in Environmental Cleanup

Pandey

2018

Orient. J. Chem

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This century is struggling with the issue of environment friendly management of the pollutants which are contaminating the environment. One of an ecofriendly and economically feasible method is the bioremediation of pollutants using bio nanoparticles. Nanobioremediation is a highly studied and explored area of remediation of contaminants using nanotechnology. Nanoparticles used for bioremediation are biologically synthesized from plant extracts, fungi and bacteria. These biogenic nanoparticles when applied to environmental contaminants had shown very promising results. Based on the various studies the bioremediation of pollutants using biosynthetic nanoparticles is emerging as a very promising and sustainable method of environment cleanup. This review focuses on the synthesis of bio-nanoparticles and their use in cleaning the environment.

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Nano CuO immobilized fly ash zeolite Fenton-like catalyst for oxidative degradation of p -nitrophenol and p -nitroaniline

Cited by 60 publications

References 58 publications

Highly efficient catalytic degradation of p-nitrophenol by Mn₃O₄.CuO nanocomposite as a heterogeneous fenton-like catalyst

Highly efficient catalytic degradation of p-nitrophenol by Mn₃O₄.CuO nanocomposite as a heterogeneous fenton-like catalyst

Removal of Phenolic Compounds from Water Using Copper Ferrite Nanosphere Composites as Fenton Catalysts

Prospects of Nanobioremediation in Environmental Cleanup

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Nano CuO immobilized fly ash zeolite Fenton-like catalyst for oxidative degradation of p -nitrophenol and p -nitroaniline

Cited by 60 publications

References 58 publications

Highly efficient catalytic degradation of p-nitrophenol by Mn3O4.CuO nanocomposite as a heterogeneous fenton-like catalyst

Highly efficient catalytic degradation of p-nitrophenol by Mn3O4.CuO nanocomposite as a heterogeneous fenton-like catalyst

Removal of Phenolic Compounds from Water Using Copper Ferrite Nanosphere Composites as Fenton Catalysts

Prospects of Nanobioremediation in Environmental Cleanup

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Resources

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Highly efficient catalytic degradation of p-nitrophenol by Mn₃O₄.CuO nanocomposite as a heterogeneous fenton-like catalyst

Highly efficient catalytic degradation of p-nitrophenol by Mn₃O₄.CuO nanocomposite as a heterogeneous fenton-like catalyst