Journal
APPLIED SURFACE SCIENCE
Volume 422, Issue -, Pages 443-451Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.05.224
Keywords
Iron-copper oxidate; Heterogeneous persulfate; Acetaminophen; Degradation pathways
Categories
Funding
- Fujian province Science and Technology project Foundation [2014Y4006]
- Xiamen Technology project Foundation [3502Z20140057, 3502Z20153025, 3502Z20151256]
- Quanzhou Technology project Foundation [2016Z074]
- Fundamental Research Funds for the Central Universities [ZQN-PY217]
- Subsidized Project for Cultivating Postgraduates'Innovative Ability in Scientific Research of Huaqiao University
Ask authors/readers for more resources
A novel iron coupled copper oxidate (Fe2O3@ Cu2O) catalyst was synthesized to activate persulfate (PS) for acetaminophen (APAP) degradation. The catalysts were characterized via field-emission scanning electron microscopy and energy-dispersive X-ray spectrometry. The effects of the catalyst, PS concentration, catalyst dosage, initial pH, dissolved oxygen were analyzed for treatment optimization. Results indicated that Fe2O3@ Cu2O achieved higher efficiency in APAP degradation than Fe2O3/PS and Cu2O/PS systems. The optimal removal efficiency of APAP (90%) was achieved within 40 min with 0.6 g/L PS and 0.3 g/L catalyst. To clarify the mechanism for APAP degradation, intermediates were analyzed with gas chromatography-mass spectrometry. Three possible degradation pathways were identified. During reaction, Cu(I) was found to react with Fe(III) to generate Fe(II), which is the most active phase for PS activation. Through the use of methanol and tert-butyl alcohol (TBA) as radical trappers, SO4 center dot- was identified as the main radical species that is generated during oxidation. (C) 2017 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available