Enhanced adsorption/extraction of bisphenols by pyrrolic N-based 3D magnetic carbon nanocomposites for effervescence-assisted solid-phase microextraction of bisphenols from juices and the underlying interaction mechanisms

• Magnetic 3D nanomaterial (CoNi-N-CNTs/rGO) is fabricated by simple calcination method. CoNi-N-CNTs/rGO realizes coating of cobalt–nickel alloy and doping nitrogen atoms. Pyrrole-N form the strongest BP sorption bonds with nanocomposite DFT computation. Effervescence-enhanced dispersive solid-phase extraction based on nanocomposite. This method provides lower LODs higher precisions for six BPs in juice samples. Herein, we a magnetic Co,Ni-codoped N-modified carbon nanotubes reduced graphene (CoNi-N-CNTs/rGO). possessed strong magnetism due to presence Co-Ni alloy, abundant defect sites owing N doping, multi-porous structure resulting from CNT in-situ growth surface. Based calculations, H-bonding, hydrophobic π-π conjugation were inferred facilitate bisphenol adsorption nanocomposites, among which interactions provided greatest contribution within given N-doping type. By employing BPM as model compound, energies (ΔE ) −1.80, −1.59 −2.08 eV graphitic-N, pyridinic-N, pyrrolic-N, respectively. infers that pyrrolic-N The nanocomposites utilized an extractant effervescence tablet-assisted microextraction (ET-MSPE) procedure was optimized using Plackett-Burman design (PBD) central composite (CCD). Under conditions, ET-MSPE/HPLC-FLD analytical performance quantification limits detection 0.06–0.20 μg/L, recoveries 82.4–103.7 % RSDs 1.2–5.3 %. particular novelty this study lies demonstrating enhancement adsorption/extraction efficiencies generate superior properties associated structure. These findings provide theoretical foundation inform rational N-doped adsorbents/extractants rigorus understanding molecular occurring between carbon-based analogues.