ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Preparation and characterization of magnetic nanocomposites for removal of organic dye Rhodamine B

Liuqing Li, Zhengwen Wei, Xiang-fei Lü, Zhen-Yi Jiang, and Wei Wang

Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of the Ministry of Education, Chang’an University, Xi’an, China

E-mail: wwchem@126.com

Received: 23 May 2025  Accepted: 6 October 2025

Abstract:

By utilizing the in situ polymerization reaction of o-tolidine and p-phthalaldehyde, magnetic inorganic/organic hybrid materials were synthesized. Various characterization techniques were employed to analyze the morphology and phase composition of the materials. Using Rhodamine B as a characteristic pollutant, it was found that the maximum adsorption capacity of the materials reached 171.59 mg/g. Density functional theory (DFT) calculations were conducted on different adsorption configurations, revealing that the adsorption process is primarily dominated by π–π interactions, alongside electrostatic attraction and donor–acceptor interactions. This provides a theoretical basis for the subsequent design and preparation of more efficient adsorption materials.

Keywords: Absorption; Chemical synthesis; Core/shell; Magnetic properties; Polymer; X-ray photoelectron spectroscopy (XPS)

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-025-04436-3

Chemical Papers 80 (1) 891–912 (2026)