title: Study on degrading graphene oxide in wastewater under different conditions for developing an efficient and economical degradation method.
abstract: With popular application of graphene and graphene oxide (GO), they have been discharged into water. Graphene and GO harm organisms. However, an efficient and economical method for removing graphene and GO in wastewater has seldom been reported. Graphene can be oxidized by hydrogen peroxide to give GO; therefore, degradation of graphene oxide is an important step in the procedure of removal of graphene from water. In this paper, GO degradation via photo-Fenton reaction under different conditions was carried out. Experimental results suggested that GO in wastewater can be efficiently and economically degraded into carbon dioxide and H2O when pH value is 3, concentration of H2O2and FeCl3are 35 mM and 5 ppm, respectively. Degradation mechanism of GO was suggested based on UV-vis absorption spectra, scanning electron microscopy, X-ray diffraction and liquid chromatography-mass spectra data of degradation intermediates. This paper suggests an efficient and economical degradation way of GO in wastewater.
authors.affiliation: a School of Environmental Science and Engineering , Nanjing University of Information Science and Technology , Nanjing , People's Republic of China.
authors.forename: Ting
authors.initials: T
authors.lastname: Li
authors.affiliation: a School of Environmental Science and Engineering , Nanjing University of Information Science and Technology , Nanjing , People's Republic of China.|b Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control , Nanjing University of Information Science and Technology , Nanjing , People's Republic of China.
authors.forename: Chao-Zhi
authors.initials: CZ
authors.lastname: Zhang
authors.affiliation: a School of Environmental Science and Engineering , Nanjing University of Information Science and Technology , Nanjing , People's Republic of China.
authors.forename: Chengyue
authors.initials: C
authors.lastname: Gu
mesh_terms: D006108:Graphite / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry / Q000378:metabolism*; D010782:Photolysis; D014865:Waste Disposal, Fluid / Q000191:economics / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000378:metabolism*
chemical_list: D006108:Graphite; D010087:Oxides; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Degradation condition; degradation intermediate; graphene oxide; mechanism; photo-Fenton