Preparation of Fe3O4-HNTs-polypyrrole Nanocomposite for Efficient Adsorption of Cu(II) and Cd(II) from Aqueous Solution
نویسندگان
1 Department of Physics, Iran University of Science and Technology, Tehran 16846-13114, Iran
2 Department of Physics, Iran University of Science and Technology, Tehran 16846-13114, Iran
3 Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
4 Department of Physics, Iran University of Science and Technology, Tehran 16846-13114, Iran
5 Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
6 Department of Physics, Iran University of Science and Technology, Tehran 16846-13114, Iran
doi
10.22036/pcr.2024.473499.2567چکیده
A facile synthesis of Fe3O4-HNTs-polypyrrole (FHP) nanocomposite was performed by in situ polymerization of polypyrrole (PPy) with two different percentages on the synthesized Fe3O4-HNTs by co-precipitation method. To confirm the FHP nanocomposite structure, various analytical techniques were employed, including FTIR, SEM, TGA, BET, and VSM analysis. The TGA analysis provided the quantity of polymer incorporated into the structure. Metal ions adsorption efficiency was experimentally investigated based on factors such as pH, adsorbent dosage, contact time, and initial contamination concentration. The adsorption efficiency of Cd (II) and Cu (II) using 30 mg of adsorbent in 60 min was determined to be 77.2 % and 82.8 %, with maximum adsorption capacities of 74.7 mg/g and 66.3 mg/g, respectively. The FHP nanocomposite, which has multiple reactive sites, was created by utilizing cost-effective materials that are readily available. Furthermore, the adsorption mechanism can be accurately characterized by pseudo-first-order kinetic model, suggesting physical adsorption, along with the Langmuir and Dubinin-Raduskevich (D-R) isotherm models, pointing towards the adsorption of a single layer of pollutants on the surface of the nanocomposite and micropore filling theory. Hence, the FHP nanocomposite shows promise as an adsorption system for effectively removing metal ions due to its exceptional efficiency in removal.
