Electrochemical sensing of anti-inflammatory agent in paramedical sample based on FeMoSe2 modified SPCE: Comparison of various preparation methods and morphological effects

Anal Chim Acta. 2019 Nov 20:1083:88-100. doi: 10.1016/j.aca.2019.07.019. Epub 2019 Jul 10.

Abstract

We demonstrate the different types of synthesis processes (hydrothermal, microwave and simple chemical synthesis) to prepare the Fe doped molybdenum diselenides (H-FeMoSe2, M-FeMoSe2, and C-FeMoSe2) and investigate their relevant electrocatalytic activities. The Fe doped MoSe2 exhibited an enhanced charge transfer conductivity and electrocatalytic activity. Especially, the H-FeMoSe2 with vertically aligned structures facilitate the abundant exposed active edge sites. Thus, H-FeMoSe2 modified screen-printed carbon electrode (H-FeMoSe2/SPCE) exhibited the lower Rct and better active surface area than that of M-FeMoSe2/SPCE and C-FeMoSe2/SPCE. As well as, the electrochemical sensing of mesalamine (MES) at H-FeMoSe2/SPCE is comparatively 0.46 and 1.28 fold higher than that obtained at M-FeMoSe2/SPCE and C-FeMoSe2/SPCE respectively. Thus, H-FeMoSe2/SPCE was concluded as an excellent electrocatalyst for sensing of MES and performed DPV technique. As the results, very low detection limit (0.8 nM) of MES was achieved at H-FeMoSe2/SPCE. Hence, the selected H-FeMoSe2/SPCE was successfully subjected to the real-time detection of MES by using a paramedical tablet and reported the excellent recovery range.

Keywords: Doping process; Electrochemical sensor; Hydrothermal technique; Iron; Mesalamine; Microwave assisted synthesis; Molybdenum diselenide; Simple chemical synthesis.

Publication types

  • Comparative Study

MeSH terms

  • Anti-Inflammatory Agents, Non-Steroidal / analysis*
  • Carbon / chemistry
  • Catalysis
  • Electrochemical Techniques / instrumentation
  • Electrochemical Techniques / methods
  • Electrodes
  • Iron / chemistry*
  • Limit of Detection
  • Mesalamine / analysis*
  • Molybdenum / chemistry*
  • Reproducibility of Results
  • Selenium Compounds / chemical synthesis
  • Selenium Compounds / chemistry*

Substances

  • Anti-Inflammatory Agents, Non-Steroidal
  • Selenium Compounds
  • Mesalamine
  • Carbon
  • Molybdenum
  • Iron