title: Application of a novel plasma-induced CD/MWCNT/iron oxide composite in zinc decontamination.
abstract: Herein, β-cyclodextrin (β-CD) was grafted onto magnetic MWCNT/iron oxide particles by using low temperature plasma-induced technique to synthesize a novel nanocomposite. The prepared composite (denoted as CD/MWCNT/iron oxide) exhibited high magnetic property (saturation magnetization M(s)=37.8 emu/g) and good dispersion property in aqueous solution. Batch experiments were conducted to evaluate the application potential of CD/MWCNT/iron oxide in the decontamination of Zn(II) from aqueous solutions. The sorption amount of Zn(II) on CD/MWCNT/iron oxide was higher than that of Zn(II) on MWCNT/iron oxides and oxidized MWCNTs, indicating that the grafted β-CD could enhance the sorption capacity of CD/MWCNT/iron oxide composite toward Zn(II) by providing multiple hydroxyl functional groups. Due to its high magnetic, CD/MWCNT/iron oxide could be easily separated from aqueous solution with an external magnetic field. Regeneration studies suggested that CD/MWCNT/iron oxide can support long term use as a cost-effective material in sewage treatment with minimum replacement costs.
authors: Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences, PO Box 1126, 230031 Hefei, PR China. styang@ipp.ac.cn
authors: Shitong
authors: S
authors: Yang
authors: Zhiqiang
authors: Z
authors: Guo
authors: Guodong
authors: G
authors: Sheng
authors: Xiangke
authors: X
authors: Wang
mesh_terms: D003666:Decontamination / Q000379:methods*; D017743:Equipment Reuse; D005290:Ferric Compounds / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D037742:Nanotubes, Carbon; D009994:Osmolar Concentration; D010100:Oxygen / Q000737:chemistry / Q000494:pharmacology; D058626:Plasma Gases / Q000494:pharmacology*; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D012722:Sewage / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods; D015032:Zinc / Q000302:isolation & purification*; D047392:beta-Cyclodextrins / Q000737:chemistry*
chemical_list: D005290:Ferric Compounds; D037742:Nanotubes, Carbon; D058626:Plasma Gases; D011108:Polymers; D012722:Sewage; D014874:Water Pollutants, Chemical; D047392:beta-Cyclodextrins; C000499:ferric oxide; D015032:Zinc; D010100:Oxygen