Preparation of a novel TETA functionalized magnetic PGMA nano-absorbent by ATRP method and used for highly effective adsorption of Hg(II)

• The TETA functionalized magnetic PGMA nano-absorbent was firstly synthesized.
• The absorbent was prepared using the atom-transfer radical polymerization method.
• The maximum adsorption capacity of resulted nano-absorbent was up to 543 mg/g.
• The removal percentage of resulted nano-absorbent reached 99.7%.
• The absorbent shows excellent selectively separate for Hg(II).

A novel triethylene teramine (TETA) functionalized magnetic poly (glycidyl methacrylate) (PGMA) nano-absorbent has been successfully synthesized by two steps, which magnetic PGMA nanoparticle was prepared by the ATRP method, and further modified with TETA functional group. The resulting nano-absorbent was characterized by means of Fourier transform infrared spectra (FT-IR), transmission electron microscope (TEM), elemental analysis and vibrating sample magnetometer (VSM). Demonstrated by batch tests, the nano-absorbent showed highly effective adsorption ability for Hg(II), the maximum adsorption capacity was up to 543 mg/g and the removal percentage reached 99.7%. Meanwhile, the resulting nano-absorbent also showed high selective adsorption for Hg(II) among coexisting heavy metals and the good regeneration performance.

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