Amino-decorated magnetic metal-organic framework as a potential novel platform for selective removal of chromium (Vl), cadmium (II) and lead (II).

In this work, the -NH2 functional group via 3-aminopropyltrimethoxysilane (APTMS) was selected to anchor onto the pore surface of magnetic metal organic framework using microwave green chemical process. The prepared nanocomposite was investigated for potential and fast removal of cationic Cd(II), Pb(II) as well as anionic Cr(VI) species via batch adsorption. Six kinetics models were applied in order to examine the adsorption mechanisms; the obtained data confirmed that the investigated metal ions followed the pseudo-second order model. The adsorption processes were fitted to the Langmuir model and the maximum adsorption capacities of cadmium (II), lead (II) and chromium (VI) ions were 693.0, 536.22 and 1092.22 mg g-1. In addition, thermodynamic study confirmed the endothermic and spontaneous adsorption reactions. The nFe3O4@MIL-88A(Fe)/APTMS was easily regenerated and the adsorptive removal values were decreased by only 3% after five consecutive recycling processes. The recovery values from tap water, sea water and wastewater were identified as Cd(II) (98.49, 96.22 and 94.73), Pb(II) (96.88, 93.31 and 91.81) and Cr(VI) (99.69, 98.01 and 95.46), respectively.

• Publication year

  2020

• Venue

  Journal of Hazardous Materials

• Publication date

  2020-01-05

• Fields of study

  Medicine, Materials Science, Chemistry, Environmental Science

• Identifiers
  DOI 10.1016/J.JHAZMAT.2019.120979PMID 31442688
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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