AI Article Synopsis

  • Super duplex stainless steel (DSS) is created with a balanced mix of ferrite and austenite, giving it better strength and resistance to corrosion.
  • This study produced nanostructured DSS powders through mechanical alloying and developed a modified carbon paste electrode (DSS-MCPE) to identify methylene blue dye in wastewater.
  • The DSS-MCPE showed a strong current response for detecting methylene blue, with a maximum of 72.22 μA, and had a significantly larger active surface area compared to a standard carbon paste electrode, enhancing its effectiveness in electrooxidizing the dye.

Article Abstract

Alloys with an equal balance of ferrite and austenite provide super duplex stainless steel (DSS) with enhanced strength and corrosion resistance. This study utilized mechanical alloying to produce nanostructured super duplex stainless steel powders for the identification of methylene blue dye in wastewater. High-energy particle grinding was employed to create the SAF-2507 DSS powders. To electrochemically oxidize methylene blue dye in wastewater, a modified carbon paste electrode (DSS-MCPE) was developed. Methylene blue, a water-soluble cationic colorant extensively used in the paper, pulp, and textile industries, poses a threat to human health and water supplies when improperly disposed of. DSS-MCPE demonstrated a significant current response, indicating its capability to detect methylene blue dye in a pH range of 6-8. The experiment revealed that 2 mg of DSS-MCPE produced a maximum current response of 72.22 μA, facilitating the effective electrooxidation of methylene blue dye in wastewater. Furthermore, the investigation demonstrated that the active surface area of the 2 mg of DSS-MCPE (0.478 cm) was greater than that of the bare carbon paste electrode (BCPE) (0.054 cm). The increased active surface area was correlated with an enhanced current response. The strong interaction between methylene blue molecules at the interface of the produced 2 mg of DSS-MCPE contributed to the observed increase in anodic current across methylene blue concentrations ranging from 0.1 to 0.6 mM.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10918683PMC
http://dx.doi.org/10.1021/acsomega.3c09163DOI Listing

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