Simple synthesis of NH2-functionalized Fe2O3 and its activated carbon composites for removing heavy metal ions

2018 1st International Conference on Environment Prevention and Pollution Control Technology

生态环境科学

Zhang, C.L.^1,2 ; Cheng, H.D.^1 ; Ren, S.Y.^1 ; Zhang, W.P.^1 ; Chen, Zhuo^1 ; Wang, Y.^3 ; Ma, J.H.^1 ; Zhang, C.S.^4 ; Guo, Z.Y.^1

College of Environment and Planning, Henan University, Kaifeng

475001, China^1

Institute of Natural Resources and Environment, Henan University, Kaifeng

475001, China^2

Institute of Technology, Henan University Minsheng College, Kaifeng

475001, China^3

School of Geography and Archaeology, National University of Ireland, Galway, Ireland^4

关键词: Activated carbon composites;    Cation surfactant;    Fourier transform infrared spectra;    Hydrothermal methods;    Physicochemical property;    Reflux condensation;    Selective removal;    Ternary solution;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/199/5/052042/pdf
DOI  :  10.1088/1755-1315/199/5/052042

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The novel recyclable and biodegradable absorbents NH2-Fe2O3 and NH2-Fe2O3/oxidation-activated carbon (NH2-Fe2O3/OAC) with great physical properties and high adsorption for uptake heavy metal ions were synthesized in this work. The NH2-Fe2O3 samples were prepared via one-pot hydrothermal methods, typically, FeCl3•6H2O, ethylene glycol and sodium acetate anhydrous were directly dissolved under stirring, followed by x mL of DETA and 0.1 g of SDS at room temperature (x = 0.5, 1, 2, 3, 4 and 5 mL). The as-prepared NH2-Fe2O3 were added into the mixture of oxidation-activated carbon, followed by the cation surfactant CTAB. After reflux condensation, the composites were washed, dried and labeled name NH2-Fe2O3/OAC. Systematically characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectra (FTIR) and X-ray diffraction (XRD), physicochemical properties were all indicated obviously in this paper. The high adsorption rates of the adsorbents achieved over 88.11 % and 98.25 % towards Pb(II). In the ternary solution, the studied heavy metals revealed selective removal sequence: Pb(II) > Cu(II) > Cd(II).