Chinese Journal of Applied Chemistry ›› 2024, Vol. 41 ›› Issue (4): 557-567.DOI: 10.19894/j.issn.1000-0518.230276

• Full Papers • Previous Articles     Next Articles

Catalytic Decolorization Performance of Azo Dyes by Doped Nano-Nickel with Three-Dimensional Network Porous Structure

Xiu-Ying PENG1, Xiao-Yan GAO2, Song-Bai WANG3(), Fu LIU4()   

  1. 1.Department of Environment and Safety Engineering,Taiyuan Institute of Technology,Taiyuan 030008,China
    2.New Energy Design and Research Institute,Coal Industry Taiyuan Design and Research Institute Group Co. Ltd. ,Taiyuan 030001,China
    3.School of Chemistry and Chemical Engineering,Shanxi University,Taiyuan 030006,China
    4.Shanxi Biological Research Institute Co. Ltd. ,Taiyuan 030006,China
  • Received:2023-09-13 Accepted:2024-01-29 Published:2024-04-01 Online:2024-04-28
  • Contact: Song-Bai WANG,Fu LIU
  • About
  • Supported by:
    the Basic Research Project of Shanxi Provincial(202103021223351);the Talents of Taiyuan Institute of Technology(2022KJ019);Shanxi Scholarship Council of China(2021-011)


Azo dyes are the main pollutants in textile printing and dyeing industrial wastewater, and their large discharge will seriously endanger the health of organisms. To develop effective catalysts for the decolorization of azo dyes in wastewater, Fe, Co dual-doped Ni ternary metal nanocrystalline is synthesized by a simple hydrothermal method with a three-dimensional network porous structure, named as Fe-Co-Ni NPs. The results show that the prepared ternary alloy nanomaterials have a three-dimensional network structure, and a small amount of Fe and Co doping could obtain higher saturation magnetic susceptibility without changing the polycrystalline structure of nickel. In the presence of sodium borohydride, Fe-Co-Ni NPs have prominent catalytic activity for Congo red reduction due to the synergistic effect of various metal elements. Congo red can be completely decolorized by Fe-Co-Ni NPs in 2 min with an apparent rate constant of 1.24 min-1, significantly better than binary Fe-Ni (1.00 min-1), Co-Ni (0.96 min-1) and single metal Ni (0.83 min-1) nanocrystals. Fe-Co-Ni NPs also show good catalytic performances for the reductive degradation of other azo dyes (such as methyl orange and direct red 80) and nitrophenols. This ternary metal catalyst is very suitable for early decolorization treatment of industrial azo wastewater due to ease of synthesis, low cost, good decolorization effect on azo dyes, high stability and reusability.

Key words: Ternary nickel-based catalyst, Catalytic reduction, Azo dye, Sodium borohydride, Congo red

CLC Number: