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<p>To prevent the aggregation of phthalocyanine in catalytic reactions, and improve its catalytic efficiency, this is an effective way by loading metal phthalocyanine onto graphene oxide (GO) with special physico-chemical properties. nitro mono/binuclear metal phthalocyanine was synthesized using different metals (cobalt, copper, iron) with 4-nitrophthalonitrile and 1,2,4,5-tetracyanobenzene as raw materials by the 1,8-diazabicyclo(5,4,0)undecane-7-ene (DBU) liquid phase catalytic method. The binuclear cobalt phthalocyanine with the best catalytic effect was loaded onto GO by means of silane coupling agent. Highly active composite catalysts based on nitro mono/binuclear cobalt phthalocyanine covalently supported on GO were prepared. Specimens were characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) to assess their catalytic performance. The results showed that the covalent linkage between GO and metal phthalocyanine enhances the catalytic activity of such composite catalysts, and GO plays an important role therein. The research also shows that the catalytic performance of GO-binuclear cobalt phthalocyanine (GO-Bi-CoPc) is optimum and the preparation process of composite catalysts is repeatable.</p> Graphical Abstract <p></p>

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Catalytic Performance of Graphene Oxide-Binuclear Metal Phthalocyanine Composite Catalyst Linked by Covalent Bonds

  • 期刊论文

  • 发表日期：

    2026年3月23日

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  • Suran Niu,
  • Yuzhi Xiang,
  • Yansheng Zhang,
  • Daohong Xia,
  • Wenliang Zhang

摘要

To prevent the aggregation of phthalocyanine in catalytic reactions, and improve its catalytic efficiency, this is an effective way by loading metal phthalocyanine onto graphene oxide (GO) with special physico-chemical properties. nitro mono/binuclear metal phthalocyanine was synthesized using different metals (cobalt, copper, iron) with 4-nitrophthalonitrile and 1,2,4,5-tetracyanobenzene as raw materials by the 1,8-diazabicyclo(5,4,0)undecane-7-ene (DBU) liquid phase catalytic method. The binuclear cobalt phthalocyanine with the best catalytic effect was loaded onto GO by means of silane coupling agent. Highly active composite catalysts based on nitro mono/binuclear cobalt phthalocyanine covalently supported on GO were prepared. Specimens were characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) to assess their catalytic performance. The results showed that the covalent linkage between GO and metal phthalocyanine enhances the catalytic activity of such composite catalysts, and GO plays an important role therein. The research also shows that the catalytic performance of GO-binuclear cobalt phthalocyanine (GO-Bi-CoPc) is optimum and the preparation process of composite catalysts is repeatable.

Graphical Abstract