Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (7): 1582.doi: 10.7503/cjcu20200143

• Physical Chemistry • Previous Articles     Next Articles

Fiber Supported Carbon Black Metal Phthalocyanine Axial Complex to Mimic Enzyme for Highly Efficient Catalytic Degradation of Organic Pollutant in Water

XIA Yun,Lü Wangyang*(),CHEN Wenxing*(),LI Nan   

  1. National Engineering Laboratory for Textile Fiber Materials & Processing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
  • Received:2020-03-16 Online:2020-07-10 Published:2020-05-11
  • Contact: Wangyang Lü,Wenxing CHEN E-mail:luwy@zstu.edu.cn;wxchen@zstu.edu.cn
  • Supported by:
    † National Natural Science Foundation of China(51703201)

Abstract:

Natural heme catalase has high selective catalysis, but it is easy to deactivate. The enzyme-like catalyst carbon black iron hexadecachlorophthalocyanine axial complex(FePcCl16-Py-CB)was synthesized for improving the activity and stability of enzyme. In the catalyst, FePcCl16 with stable performance worked as active site, tetraminopyridine was introduced as ligand, carbon back was employed as carrier. Fiber-supported enzyme mimicking catalyst FePcCl16-Py-CB@LMPET which was easy to separate with water was prepared by FePcCl16-Py-CB loaded on low melting point sheath-core polyester fibers(LMPET) via thermal bonding. The enzyme-like catalytic system was designed based on FePcCl16-Py-CB@LMPET as catalyst, H2O2 as oxidant, DXMS as substrate to investigate the catalytic activity and the recycle performance, to explore the catalytic mechanism and the degradation process of DXMS. The results showed that high valent iron oxo[Fe(Ⅳ)=O] produced by heterolytic cleavage of H2O2 was the main active species, thus the system exhibited excellent catalytic activity and stable performance under mild condition. The final degradation products of the catalytic system were all small molecular acids within 120 min. The construction of the enzyme-like catalytic system provides a new idea for wastewater treatment.

Key words: Low melting point sheath-core polyester fiber, Carbon black, Metal phthalocyanine, Enzyme-like catalyst, Organic pollutant

CLC Number: 

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