pp 1–10 | Cite as

Fast degradation of nitro and azo compounds in recyclable noble-metal ions systems

  • Li SunEmail author
  • Xixi Liu
  • Hua Zhang
  • Binlin Dou
  • Lixin Zhang
  • Wenxian Su
Original Paper


The degradation of nitro and azo compounds has attracted wide attention due to their high toxicity and stability in water. Here, we reported the fast degradation of nitro and azo compounds by the direct injection of high-concentration noble-metal ions (Au3+, Ag+, Pd2+, or Pt4+) and discussed the degradation mechanism. The rate constants of the nitro and azo compounds degradation followed the order: K4-NP > K2-NP > K3-NP > K2-NR > KMR > KMO, explained by the substituent effect. The maximum of the degradation rate constant could reach up to 16 min−1, which can be attributed to the atom-nano catalysis motivated by the direct injection of high-concentration ions. Furthermore, based on the method, the highlighted conflicts shown in the nitro and azo compounds degradation could be resolved. Meanwhile, the recovery method (centrifugation, dissolution, and purification) of noble-metal ions was proposed by means of various characterization techniques, and then noble-metal ions were recovered and recycled for five cycles. Obviously, the above degradation technology can have great potential for applications in water pollutant removal and environmental remediation.


Ions Organic compounds Catalysis Degradation Recycling 


Funding information

The authors appreciate the financial supports of the National Natural Science Foundation of China (No. 11404210) and the Capacity Building Plan for some Non-military Universities and Colleges of Shanghai Scientific Committee (No. 18060502600).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

11581_2019_3329_MOESM1_ESM.docx (698 kb)
ESM 1 (DOCX 697 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Li Sun
    • 1
    Email author
  • Xixi Liu
    • 1
  • Hua Zhang
    • 1
  • Binlin Dou
    • 1
  • Lixin Zhang
    • 1
  • Wenxian Su
    • 1
  1. 1.Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, School of Energy and Power EngineeringUniversity of Shanghai for Science and TechnologyShanghaiChina

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