Azo dye degradation behavior of AlFeMnTiM (M = Cr, Co, Ni) high-entropy alloys

  • Shi-kai Wu
  • Ye PanEmail author
  • Ning Wang
  • Tao Lu
  • Wei-ji Dai


Because of the potential carcinogenic effects and difficult degradation of azo dyes, their degradation has been a longstanding problem. The degradation of azo dye Direct Blue 6 (DB6) using ball-milled (BM) high-entropy alloy (HEA) powders was characterized in this work. Newly designed AlFeMnTiM (M = Cr, Co, Ni) HEAs synthesized by mechanical alloying (MA) showed excellent performance in the degradation of azo dye DB6. The degradation efficiency of AlFeMnTiCr is approximately 19 times greater than that of the widely used commercial Fe-Si-B amorphous alloy ribbons and more than 100 times greater than that of the widely used commercial zero-valent iron (ZVI) powders. The galvanic-cell effect and the unique crystal structure are responsible for the good degradation performance of the BM HEAs. This study indicates that BM HEAs are attractive, valuable, and promising environmental catalysts for wastewater contaminated by azo dyes.


high entropy alloy mechanical alloying AlFeMnTiM degradation performance azo dye 


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This work was financially supported by the National Natural Science Foundation of China (No. 51671056), Jiangsu Key Laboratory for Advanced Metallic Materials (No. BM2007204).


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Copyright information

© University of Science and Technology Beijing and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Shi-kai Wu
    • 1
  • Ye Pan
    • 1
    Email author
  • Ning Wang
    • 1
  • Tao Lu
    • 1
  • Wei-ji Dai
    • 1
  1. 1.School of Materials Science and EngineeringSoutheast University, Jiangsu Key Laboratory for Advanced Metallic MaterialsNanjinChina

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