Production of nanocatalyst from natural magnetite by glow discharge plasma for enhanced catalytic ozonation of an oxazine dye in aqueous solution

Title
Production of nanocatalyst from natural magnetite by glow discharge plasma for enhanced catalytic ozonation of an oxazine dye in aqueous solution
Author(s)
주상우Mojtaba Taseidifar[Mojtaba Taseidifar]Alireza Khataee[ Alireza Khataee]Behrouz Vahid[ Behrouz Vahid]Sirous Khorram[Sirous Khorram]
Keywords
FENTON-LIKE; OPERATIONAL PARAMETERS; WATER-TREATMENT; OXYGEN PLASMA; MIXED OXIDES; DEGRADATION; OZONE; IRON; MINERALIZATION; ELECTROCOAGULATION
Issue Date
201508
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, v.404, pp.218 - 226
Abstract
Cheap natural magnetite (NM) was modified with oxygen plasma owing to its cleaning effect by chemical etching and with argon plasma due to its sputtering effect resulting in more surface roughness. These plasmas were utilized individually or in the order of first O-2 and then Ar plasmas, respectively. The performance of the plasma treated magnetites (PTMs) was higher than NM for treatment of Basic Blue 3 (BB3) in catalytic ozonation (O-3/PTM). The properties of NM and the most efficient treated magnetite (PTM4) samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Brunauer Emmett Teller (BET) and scanning electron microscopy (SEM) methods. The optimal values were chosen for operational parameters including ozone concentration (0.3 g/L), initial pH (6.7) and PTM4 dosage (600 mg/L). GC Mass analysis was applied to detect intermediates. Environmentally-friendly treatment of the NM, simple separation of the catalyst, negligible leached iron concentration, successive reusability at milder pH and unaffected efficiency in the presence of inorganic salts are the main advantages of the PTM4. (C) 2015 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/31360http://dx.doi.org/10.1016/j.molcata.2015.05.004
ISSN
1381-1169
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공과대학 > 기계공학부 > Articles
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