High-efficiency catalytic degradation of phenol based on the peroxidase-like activity of cupric oxide nanoparticles

Autor:	W. Chen, Wei Chen, Xing-Hua Xia, Lei Hong, Ai-Lin Liu, Ye-Bin Feng, Guangwen Li
Rok vydání:	2013
Předmět:	Environmental Engineering Aqueous solution biology Radical Inorganic chemistry Oxide Nanoparticle Catalysis chemistry.chemical_compound chemistry biology.protein Environmental Chemistry Phenol General Agricultural and Biological Sciences Hydrogen peroxide Peroxidase
Zdroj:	International Journal of Environmental Science and Technology. 12:653-660
ISSN:	1735-2630 1735-1472
Popis:	Based on the recently discovered peroxidase-like 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::989e4cd1e12f8376ad7d4c2b52c835a4 https://doi.org/10.1007/s13762-013-0442-6 Zobrazit plný text záznamu Full text from SpringerLink