Synthesis and Characterization of GO/MOF-199/MoSe<sub>2</sub> for use as a Solid Phase Extractant for Flame AAS Determination of the Speciation of Cr in Natural and Wastewater Samples

Ahmed H. E. H., Mohammed A. M. A., Soylak M.

ATOMIC SPECTROSCOPY, vol.45, no.2, pp.132-143, 2024 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 45 Issue: 2
  • Publication Date: 2024
  • Doi Number: 10.46770/as.2024.052
  • Journal Name: ATOMIC SPECTROSCOPY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.132-143
  • Erciyes University Affiliated: Yes

Abstract

This study investigates a new approach to synthesizing molybdenum diselenide nanoflowers doped on metalorganic frameworks-graphene oxide (GO/MOF-199/MoSe2) nanocomposite. The nanocomposite has been used for chromium speciation analysis. Various analytical methods, such as Fourier transform infrared (FT-IR), X-ray diffraction (XRD), and fieldemission scanning electron microscopy (FE-SEM), validated the proper preparation and unique structural properties of the nanocomposite. Optimizations were conducted on several analytical parameters, including pH (9.0), ligand (1-(2-pyridylazo)-2-naphthol (PAN)), adsorbent amount (15 mg), sample and eluent volumes (30 and 2 mL), and the interference effects. The method shows outstanding sensitivity, accuracy, and efficiency, as shown by low detection and quantification limits of Cr(III) (0.11 and 0.39 mu g L -1 ) and a relatively low RSD (6.5%). The proposed method was applied to natural water, wastewater samples, and certified reference materials (CRMs) to demonstrate its adaptability and usefulness in various environmental samples.