Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2021 Oct;28(40):57099-57114.
doi: 10.1007/s11356-021-14590-2. Epub 2021 Jun 3.

Magnetic CuNiFe2O4 nanoparticles loaded on multi-walled carbon nanotubes as a novel catalyst for peroxymonosulfate activation and degradation of reactive black 5

Mehdi Alhamd  1 , Tayebeh Tabatabaie  2 , Iman Parseh  3 , Fazel Amiri  1 , Nezamaddin Mengelizadeh  4
Affiliations

Magnetic CuNiFe2O4 nanoparticles loaded on multi-walled carbon nanotubes as a novel catalyst for peroxymonosulfate activation and degradation of reactive black 5

Mehdi Alhamd et al. Environ Sci Pollut Res Int. 2021 Oct.

Abstract

Novel copper-nickel ferrite nanocatalyst loaded on multi-walled carbon nanotube (MWCNTs-CuNiFe2O4) was synthesized and applied to activate peroxymonosulfate (PMS) in the degradation of the reactive black 5 (RB5). The structure of the catalyst was well characterized by scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), and X-ray powder diffraction (XRD). The MWCNTs-CuNiFe2O4/PMS system showed a high performance in the degradation of RB5 with a kinetic rate of 1.5-2.5 times higher than homogeneous and heterogeneous systems. Maximum degradation efficiency (99.60%) was obtained at an initial pH of 7, catalyst dosage of 250 mg/L, PMS dosage of 4 mM, the temperature of 25 °C, and reaction time of 15 min. Anion experiments emphasized that the presence of nitrate, carbonate, and phosphate in the solution reduced the degradation efficiency by producing reactive species with low oxidation potential. The RB5 degradation rate evolved with temperature, and the activation energy was obtained to be 44.48 kJ/mol. The mechanism of PMS activation and production of free radicals was proposed based on tert-butyl alcohol (TBA), ethanol (EtOH), and potassium iodide (KI) scavengers. Trapping experiments showed that both sulfate (SO4•-) and hydroxyl (•OH) radicals are involved in the catalytic degradation of RB5. The effective treatment of real wastewater and tap water by the MWCNTs-CuNiFe2O4/PMS system requires a long reaction time. Gas chromatography-mass spectrometry (GC-MS) analysis indicated that RB5 can be degraded via methylation, decarboxylation, hydroxylation, and ring/chain cleavage pathways. The stable catalytic activity after three consecutive cycles suggested that MWCNTs-CuFe2O4 is a novel reusability catalyst in PMS activation.

Keywords: By-products; Degradation pathways; MWCNTs-CuNiFe2O4; Peroxymonosulfate; Real wastewater.

PubMed Disclaimer

Similar articles

See all similar articles

References

    1. Ahamad HS, Meshram NS, Bankar SB, Dhoble SJ, Rewatkar KG (2017) Structural properties of CuxNi1-xFe2O4 nano ferrites prepared by urea-gel microwave auto combustion method. Ferroelectrics 516(1):67–73. https://doi.org/10.1080/00150193.2017.1362285 - DOI
    1. Al Hakim S, Jaber S, Zein Eddine N, Baalbaki A, Ghauch A (2020) Degradation of theophylline in a UV254/PS system: matrix effect and application to a factory effluent. Chem Eng J 380:122478. https://doi.org/10.1016/j.cej.2019.122478 - DOI
    1. Ashrafi S, Mengelizadeh N, Dadban Shahamat Y, Zare MR, Jalil M, Berizi Z, Shooshtarian MR, Parvizimehr A, Zolghadr R (2020) Multi-walled carbon nanotubes-CoFe2O4 nanoparticles as a reusable novel peroxymonosulfate activator for degradation of Reactive Black 5. Water Environ Res 92(7):969–974. https://doi.org/10.1002/wer.1291 - DOI
    1. Ballav N, Debnath S, Pillay K, Maity A (2015) Efficient removal of Reactive Black from aqueous solution using polyaniline coated ligno-cellulose composite as a potential adsorbent. J Mol Liq 209:387–396. https://doi.org/10.1016/j.molliq.2015.05.051 - DOI
    1. Camilli L, Passacantando M (2018) Advances on sensors based on carbon nanotubes. Chemosensors 6(4):62 - DOI

LinkOut - more resources