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- Title
Catalytic Degradation of Phenol and p-Nitrophenol Using FeO/MWCNT Nanocomposites as Heterogeneous Fenton-Like Catalyst.
- Authors
Tian, Xiaojun; Liu, Yunfang; Chi, Weidong; Wang, Yu; Yue, Xiuzheng; Huang, Qigu; Yu, Changyuan
- Abstract
FeO decorated multi-walled carbon nanotube (FeO/MWCNT) nanocomposites were synthesized by co-precipitation process and used as heterogeneous Fenton catalyst for degradation of phenol and p-nitrophenol (p-NP). The FeO nanoparticles with size less than 20 nm were well-dispersedly coated on the surface of MWCNTs at relatively low loading. Some aggregations appear at high FeO content in composite. The FeO/MWCNT with about 25 wt.% of FeO is the most cost-effective catalyst compared with others, whose phenol conversion and COD removal rates could, respectively, reach to 99.20 and 58.09%. And a high HO utilization efficiency was achieved (about 132.41%) for this catalyst. For the p-NP degradation, the optimal reaction condition was that: 2.0 mg/L of catalyst dosage, 3 mmol/L of initial HO concentration, 3 of pH value, and 40 °C of reaction temperature. At this condition, the removal rates of p-NP and COD in 120 min achieved 97.16 and 67.71%, respectively. And the FeO/MWCNT nanocomposite also exhibits an acceptable stability and reusability.
- Subjects
BIODEGRADATION of phenols; NITROPHENOLS; FERRIC oxide; MULTIWALLED carbon nanotubes; NANOCOMPOSITE materials; HABER-Weiss reaction
- Publication
Water, Air & Soil Pollution, 2017, Vol 228, Issue 8, p1
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1007/s11270-017-3485-3