CuFe2O4@GO nanocomposite as an effective and recoverable catalyst of peroxymonosulfate activation for degradation of aqueous dye pollutants |
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| Institution: | 1. School of Environmental Engineering, Wuhan Textile University, Engineering Research Centre for Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan 430073, China;2. Department of Environmental Science & Engineering, Fudan University, Shanghai 200438, China;1. College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China;2. School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China;3. College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China;1. Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;2. Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China;1. Department of Environmental Engineering, Wuhan University, Wuhan 430079, China;2. Shenzhen Research Institute of Wuhan University, Shenzhen 518057, China;1. State Key Laboratory of Pollution Control Reuse, Tongji University, Shanghai 200092, China;2. China Academy of Urban Planning & Design, Beijing 100037, China;3. College of Architecture and Civil Engineering, Xinjiang University, Urumqi 830047, China;1. School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, PR China;2. Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE), University of Cincinnati, Cincinnati, OH, 45221, USA |
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| Abstract: | Recently, heterogeneous activation of peroxymonosulfate (PMS) to oxidatively degrade organic pollutants has been a hotspot. In the present work, copper ferrite-graphite oxide hybrid (CuFe2O4@GO) was prepared and used as catalyst to activate PMS for degradation of methylene blue (MB) in aqueous solution. A high degradation efficiency (93.3%) was achieved at the experimental conditions of 20 mg/L MB, 200 mg/L CuFe2O4@GO, 0.8 mmol/L PMS, and 25 °C temperature. Moreover, CuFe2O4@GO showed an excellent reusability and stability. The effects of various operational parameters including pollutant type, solution pH, catalyst dosage, PMS dosage, pollutant concentration, temperature, natural organic matter (NOM), and inorganic anions on the catalytic degradation process were comprehensively investigated and elucidated. The further mechanistic study revealed the Cu(II)/Cu(I) redox couple on CuFe2O4@GO played the dominant role in PMS activation, where both hydroxyl and sulfate radicals were generated and proceeded the degradation of pollutants. In general, CuFe2O4@GO is a promising heterocatalyst for PMS-based advanced oxidation processes (AOPs) in wastewater treatment. |
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| Keywords: | Peroxymonosulfate Methylene blue Sulfate radical Advanced oxidation processes |
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