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<p>A [tetrakis(N-methylpyridyl)porphyrinato]cobalt electrochemical reduction modified multi-walled carbon nanotubes (CoTMPyP/ER-m-MWCNTs) nanocomposite was synthesized. The composites were characterized through an array of analytical techniques, including scanning electron microscopy, transmission electron microscopy, energy-dispersive spectroscopy, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy. Electrochemical analyses demonstrated the capability of the CoTMPyP/ER-m-MWCNTs nanocomposite-modified glassy carbon electrode (GCE) to simultaneously detect adenine (A), guanine (G), and uric acid (UA) over specific concentration ranges: 0.41–63.71&#xa0;μM for uric acid, and 0.25–27.14&#xa0;μM for both adenine and guanine. The determined detection limits were 0.22&#xa0;μM, 0.24&#xa0;μM, and 0.32&#xa0;μM for adenine, guanine, and uric acid, respectively. The nanocomposite demonstrates significant promise for applications in electrochemical sensing.</p>

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Synthesis of CoTMPyP/electrochemical reduction modified multi-walled carbon nanotubes nanocomposites for the detection of purines and uric acid

  • 期刊论文

  • 发表日期：

    2025年1月30日

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  • Li Dong,
  • Dingcheng Zhang,
  • Xia Wu,
  • Jing Zhu,
  • Lin Liu,
  • Chao Liu,
  • Xiaobo Zhang,
  • Zhiwei Tong

摘要

A [tetrakis(N-methylpyridyl)porphyrinato]cobalt electrochemical reduction modified multi-walled carbon nanotubes (CoTMPyP/ER-m-MWCNTs) nanocomposite was synthesized. The composites were characterized through an array of analytical techniques, including scanning electron microscopy, transmission electron microscopy, energy-dispersive spectroscopy, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy. Electrochemical analyses demonstrated the capability of the CoTMPyP/ER-m-MWCNTs nanocomposite-modified glassy carbon electrode (GCE) to simultaneously detect adenine (A), guanine (G), and uric acid (UA) over specific concentration ranges: 0.41–63.71 μM for uric acid, and 0.25–27.14 μM for both adenine and guanine. The determined detection limits were 0.22 μM, 0.24 μM, and 0.32 μM for adenine, guanine, and uric acid, respectively. The nanocomposite demonstrates significant promise for applications in electrochemical sensing.