title: A 2D-g-C3N4nanosheet as an eco-friendly adsorbent for various environmental pollutants in water.
abstract: A novel graphitic carbon nitride (g-C3N4) nanosheet adsorbent with a large surface area, remarkable hydrophilicity and high adsorption capacity, was presented for the removal of cadmium ions (Cd2+) and methylene blue (MB) from aqueous solution. Adsorption measurements were conducted systematically to study the influences of the contact time, initial concentrations of Cd2+and MB, temperature, and pH value. The maximum adsorption capacities of g-C3N4towards Cd2+and MB were 94.4 and 42.1 mg g-1, respectively, at 318.5 K when the initial concentrations of Cd2+and MB were 200 and 20 mg L-1, respectively. The adsorption kinetics fit a pseudo-second-order model. The high adsorption performance of the g-C3N4adsorbent can be attributed to the multiple adsorption sites on g-C3N4, including the π-π conjugate interactions and electrostatic attractions with pollutants in water. In addition, it is significant to achieve high adsorption performance of g-C3N4nanosheets by efficiently exposing the adsorption sites by adjusting the microstructure surface properties and dispersity in solution.
authors.affiliation: Nano-Materials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China; Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Xingguo
authors.initials: X
authors.lastname: Cai
authors.affiliation: Nano-Materials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China; Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Junyong
authors.initials: J
authors.lastname: He
authors.affiliation: Nano-Materials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China; Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Liang
authors.initials: L
authors.lastname: Chen
authors.affiliation: Nano-Materials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China; Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Kai
authors.initials: K
authors.lastname: Chen
authors.affiliation: Nano-Materials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China; Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Yulian
authors.initials: Y
authors.lastname: Li
authors.affiliation: Nano-Materials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China; Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Kaisheng
authors.initials: K
authors.lastname: Zhang
authors.affiliation: Nano-Materials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Jin
authors.affiliation: Nano-Materials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China.
authors.forename: Jinyun
authors.initials: J
authors.lastname: Liu
authors.affiliation: Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Chengming
authors.initials: C
authors.lastname: Wang
authors.affiliation: Mengcheng Water Affair Bureau, Mengcheng, Anhui 233500, PR China.
authors.forename: Xuguang
authors.initials: X
authors.lastname: Wang
authors.affiliation: Nano-Materials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China. Electronic address: ltkong@iim.ac.cn.
authors.forename: Lingtao
authors.initials: L
authors.lastname: Kong
authors.affiliation: Nano-Materials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China.
authors.forename: Jinhuai
authors.initials: J
authors.lastname: Liu
mesh_terms: D000327:Adsorption; D004785:Environmental Pollutants / Q000302:isolation & purification*; D006108:Graphite / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D049329:Nanostructures / Q000737:chemistry*; D009570:Nitriles / Q000737:chemistry*; D012996:Solutions; D013499:Surface Properties; D013696:Temperature; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D004785:Environmental Pollutants; D009570:Nitriles; D012996:Solutions; D014874:Water Pollutants, Chemical; D014867:Water; C011206:cyanogen; D006108:Graphite
keywords: Adsorption; Cadmium ion; Methylene blue; g-C(3)N(4) nanosheet