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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 12, No. 2, 2015, pp. 653-660
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Bioline Code: st15059
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 12, No. 2, 2015, pp. 653-660
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High-efficiency catalytic degradation of phenol based on the peroxidase-like activity of cupric oxide nanoparticles
Feng, Y.B.; Hong, I.; Liu, A.L.; Chen, W.D.; Li, G.W.; Chen, W. & Xia, X.H.
Abstract
Based on the recently discovered peroxidaselike
activity, cupric oxide nanoparticles with diameters
about 6 nm were synthesized and used to remove phenol
from aqueous solution. As a kind of peroxidase mimetic
substance, cupric oxide nanoparticles can be used as a
promising catalyst for the total oxidation of phenol in
aqueous solutions by peroxidation, which therefore avoids
the need of secondary treatments. The mechanism study
suggested that cupric oxide nanoparticles could catalyze
hydrogen peroxide to form hydroxyl free radicals, which
were mainly responsible for the removal of phenol. The
catalytic conditions for the phenol degradation were
extensively optimized among a range of pH as well as
initial concentration of catalyst, H2O2 and phenol. High
degradation efficiency of phenol can be achieved in relatively
wide pH range from 3 to 7. Under optimized conditions,
phenol (0.25 g/l) can be eliminated completely in
35 min. It can be potentially applied in treating the
industrial wastewaters.
Keywords
Phenol; Degradation; Cupric oxide nanoparticles; Enzyme mimic; Catalysis
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