title: Facilitated biological reduction of nitroaromatic compounds by reduced graphene oxide and the role of its surface characteristics.
abstract: How reduced graphene oxide (RGO) mediates the reductive transformation of nitroaromatic pollutants by mixed cultures and the role of its surface characteristics were evaluated in this study. Different electron donors were applied to investigate the interaction between RGO and anaerobic microbes. Moreover, the influence of the surface properties of RGO on biological nitroaromatic removal was further elucidated. The results show that RGO could achieve an approximate one-fold rate increase of nitrobenzene reduction by mixed culture with glucose as an electron donor. Selective elimination of oxygen moieties on the RGO surface, such as quinone groups, decreased the nitrobenzene transformation rate, whereas doping nitrogen into the RGO framework exhibited a positive effect. The study indicates that graphene-based carbon nanomaterials have the potential to accelerate the biological transformation of nitroaromatic compounds and that the functionalization of these carbon nanomaterials, especially through surface modification, would further enhance the conversion efficiency of contaminants.
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Collaborative Innovation Centre of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Li
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Collaborative Innovation Centre of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Liu
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Collaborative Innovation Centre of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, China.
authors.forename: Yi-Xuan
authors.initials: YX
authors.lastname: Wang
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Collaborative Innovation Centre of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, China.
authors.forename: Han-Qing
authors.initials: HQ
authors.lastname: Zhao
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Collaborative Innovation Centre of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, China.
authors.forename: Chuan-Shu
authors.initials: CS
authors.lastname: He
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Collaborative Innovation Centre of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, China.
authors.forename: Hou-Yun
authors.initials: HY
authors.lastname: Yang
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Collaborative Innovation Centre of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, China.
authors.forename: Li
authors.initials: L
authors.lastname: Gong
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Collaborative Innovation Centre of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, China.|Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu Province, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Mu
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Collaborative Innovation Centre of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, China.
authors.forename: Han-Qing
authors.initials: HQ
authors.lastname: Yu
mesh_terms: D000693:Anaerobiosis; D001711:Biotransformation; D004785:Environmental Pollutants / Q000378:metabolism; D005947:Glucose / Q000378:metabolism; D006108:Graphite / Q000378:metabolism*; D006841:Hydrocarbons, Aromatic / Q000378:metabolism*; D059013:Microbial Consortia; D009603:Nitroso Compounds / Q000378:metabolism*; D010084:Oxidation-Reduction
chemical_list: D004785:Environmental Pollutants; D006841:Hydrocarbons, Aromatic; D009603:Nitroso Compounds; D006108:Graphite; D005947:Glucose