Construction of hyperbranched imprinted nanomaterials for selective adsorption of cadmium (II)

Authors

SHENG NAN HUFollow
XINYU ZHANGFollow
MING GUOFollow
SHENGCHUN WUFollow
WENJUN LUFollow

DOI

10.55730/1300-0527.3664

Abstract

A hyperbranched ion-imprinted polymer (IIP) material containing multiple selective adsorption sites was synthesized using halloysite nanotubes, methyl acrylate, and ethylenediamine in the presence of a template ion [i.e. Cd (II) heavy metal]. The successful preparation of the Cd-IIP composition was confirmed by FT-IR, XRD, TEM, TGA, and elemental analysis. The polymers exhibited good adsorption of Cd (II) with a maximum adsorption capacity of 64.37 mg·g–1. The imprinting factor (α) for Cd (II) was 2.62 and the selection factor (β) was 1.78, indicating a specific adsorption of Cd (II) ion. The selection coefficients of Cd-IIP for Cd (II)/Pb (II), Cd (II)/Cu (II), Cd (II)/Ni (II), Cd (II)/Cr (III), and Cd (II)/Na (I) also indicated an excellent selectivity of the hyperbranched polymers for Cd (II) in the presence of competitive ions. The removal efficiency remained more than 75% after five cycles of desorption/adsorption. We envision that the HNTs based Cd-IIP has promising applications in the removal of Cd (II) from wastewater.

Keywords

Halloysite, ion-imprinting, hyperbranched polymer, cadmium ion, specific adsorption

First Page

364

Last Page

375

Recommended Citation

HU, SHENG NAN; ZHANG, XINYU; GUO, MING; WU, SHENGCHUN; and LU, WENJUN (2024) "Construction of hyperbranched imprinted nanomaterials for selective adsorption of cadmium (II)," Turkish Journal of Chemistry: Vol. 48: No. 2, Article 14. https://doi.org/10.55730/1300-0527.3664
Available at: https://journals.tubitak.gov.tr/chem/vol48/iss2/14