In situ One‐pot Electrochemical Synthesis of Aluminum Oxide/polyaniline Nanocomposite; Characterization and Its Adsorption Properties towards Some Heavy Metal Ions

Abstract

Aluminum oxide/polyaniline nanocomposite is prepared by a new and one-pot method including in situ electrooxidation of aluminum and electropolymerization of aniline. The product has been characterized by elemental analysis, FT-IR spectroscopy, X-ray diffraction (XRD), Field Emission Scanning Electron Micrographs (FESEM), and Transmission Electron Micrographs (TEM) techniques. ICP-OES was used for determination of aluminum in the prepared nanocomposite. A porous structure of the prepared composite has been shown by FESEM images. TEM of the product confirms the presence of exfoliated aluminum oxide nanofibers. The adsorption potentials of the prepared nanocomposite towards Cu 2+ , Pb 2+ , Zn 2+ , Cd 2+ , Ni 2+ and Co 2+ ions were evaluated in batch adsorption experiments. The results show that the adsorption efficiency is controlled by aqueous phase pH. The experimental data was well interpreted by considering the Langmuir model. The kinetics of the adsorption processes can be well interpreted by pseudo-second-order equation.

Polyaniline/Nanomaterial Composites for the Removal of Heavy Metals by Adsorption: A Review

“…Ion exchange and surface complexation were the main mechanisms responsible for the adsorption. In another study, an Al 2 O 3 /PANI nanocomposite was prepared via a new one-pot method including simultaneous exfoliation of aluminum nanofibers and electropolymerization of aniline [44]; the nanocomposite displayed a nanofibrous, nanoporous structure with pore diameter in the range of 70-100 nm. The adsorption performance of the nanocomposite was in the following order-Cu 2+ , Pb 2+ > Zn 2+ > Cd 2+ > Ni 2+ , Co 2+ -with significant selectivity toward Cu(II) and Pb(II).…”

Transition metal doped ZIF‐8 for the detection of the heavy metal Hg(II)

“…For example, the discharge of mercury ions not only pollutes water and soil but also has serious impacts on aquatic organisms and terrestrial ecosystems, disrupting ecological balance and threatening biodiversity [7]. Hg(II) can interfere with plant development, causing damage to cell division, fertilization, and embryonic development [8].…”