title: Comparative Study of Carbon Materials Synthesized "Greenly" for 2-CP Removal.
abstract: Carbon nanotubes (CNTs), graphene (GA) and carbon nanospheres (CNSs) were prepared respectively using grass (Festucaarundinace) as the sole carbon resource by solvothermal method and characterized as adsorbent and photocatalyst for 2-chlorophenol (2-CP) removal in water. With H2O2/HNO3/H2SO4, the CNTs were firstly produced from grass (Festucaarundinace) at 300 °C by hydrolysis and oxidization, the CNTs were secondly opened to form the GA by oxidization at 400 °C, and the GA was lastly rolled-up to form the CNSs by oxidization at 500 °C. All adsorption equilibration of the CNTs, GA, and CNSs for 2-CP were achieved within 120 min, and 60.35%, 20.12%, and 76.22% of 2-CP (5 mg L(-1), pH = 6.3) were adsorbed, respectively. Furthermore, the high removal rates of 2-CP were about 88.23%, 92.90%, and 79.64% by the CNTs, GA, and CNSs, after 120 min adsorption and 160 min irradiation. On the basis of these results, the CNSs were suitable for removal 2-CP as adsorbent, and the GA was suitable as photocatalyst. The photooxidation of 2-CP was mainly initiated by O2(·-) or ·OH which was generated from the combine with simulated sunlight and the CNTs or GA, respectively. However, the CNTs was not suitable for removal 2-CP owing to the increasing toxicity.
authors.affiliation: School of Environment, Northeast Normal University, Changchun, Jilin 130024, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Ma
authors.affiliation: School of Environment, Northeast Normal University, Changchun, Jilin 130024, China.
authors.forename: Nan
authors.initials: N
authors.lastname: Lu
authors.affiliation: School of Environment, Northeast Normal University, Changchun, Jilin 130024, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Lu
authors.affiliation: School of Environment, Northeast Normal University, Changchun, Jilin 130024, China.
authors.forename: Jiu-Nian
authors.initials: JN
authors.lastname: Guan
authors.affiliation: School of Environment, Northeast Normal University, Changchun, Jilin 130024, China.|Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian, Liaoning 116024, China.
authors.forename: Jiao
authors.initials: J
authors.lastname: Qu
authors.affiliation: School of Environment, Northeast Normal University, Changchun, Jilin 130024, China.
authors.forename: Hai-Yang
authors.initials: HY
authors.lastname: Liu
authors.affiliation: School of Environment, Northeast Normal University, Changchun, Jilin 130024, China.
authors.forename: Qiao
authors.initials: Q
authors.lastname: Cong
authors.affiliation: School of Environment, Northeast Normal University, Changchun, Jilin 130024, China.
authors.forename: Xing
authors.initials: X
authors.lastname: Yuan