Fabrication of sulfamic acid functionalized magnetic nanoparticles with denderimeric linkers and its application for microextraction purposes, one-pot preparation of pyrans pigments and removal of malachite green

Abstarct In this research, we stated the fabrication of an innovative sulfamic acid functionalized magnetic nanoparticles (Fe3O4@PAMAM-SO3H) with denderimeric linkers. FT-IR, TEM, XRD, FE-SEM, and TGA methods were carried out to characterize the catalyst. Eventually, The catalytic prowess of the Fe3O4@PAMAM-SO3H was tested to synthesize highly substituted pyrans. The obtained magnetic sorbent was also used to remove malachite green (MG) and magnetic solid phase extraction of bisphenol A (BPA) as an organic pollutant from aquoues media in the form of magnetic solid-phase extraction (MSPE) method. The maximum adsorption capacity (qm) of the prepared sorbent for MG found by the Langmuir isotherm was 1250 mg g−1 at 333.15 K. In addition, the MSPE of BPA was carried out and high performance liquid chromatography (HPLC) was employed to quantify the extracted analyte. The method presented a linearity range of 0.2–200 µg L−1. The obtained relative standard deviations (RSDs) were lower than 7.1%. The limit of quantification (LOQ) and limit of detection (LOD) were also calculated to be 0.18 and 0.05 µg L−1, respectively. Relative recoveries higher than 97.5% were attained for analysis of various selected real samples.