Study on Direct Electrocatalytic Performance of Amidinated Carbon Nanotube-meso-tetrakis(4-carboxyphenyl)Porphin Supported Hemoglobin Based Electrode
The research and development of light-sensitive electrochemical devices are of great significance for environmental monitoring,environmental protection and new energy development.Among many photoresponsive nano-materials,porphin organic dyes are favored because of their excellent photoelectric properties.Amino modified carbon nanotubes modified by meso-tetrakis(4-carboxyphenyl)porphyrin were used as the carrier to fix hemoglobin.Hemoglobin was fixed on the surface of nanocomplex by covalent coupling,and the interaction between enzyme and carrier was analyzed by spectroscopy.The direct electrochemical behavior of immobilized enzyme modified electrode and its catalytic effect on hydrogen peroxide was investigated by electrochemical means.The sensitivity of the solid enzyme electrode is 17.98 μA·mmol-1·L1,the detection limit was 0.003 mmol·L-1,and the Mi constant km=0.1 mmol·L-1.The interaction between the enzyme and the carrier and the catalytic effect on hydrogen peroxide were detected by spectroscopy and electrochemical methods.
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