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<p> The&#xa0;synthesis of self-supporting material ZnMnO₂ by electrospinning and high-temperature calcination&#xa0;is reported. A highly sensitive electrochemiluminescence (ECL) sensor for Amaranth Red (AR) detection was constructed using Luminol@Ti₃AlC₂ and ZnMnO₂ with multi-step signal amplification. Luminol-O<sub>2</sub> served as the ECL probe with luminescent signal originating from its reaction with dissolved oxygen. Ti₃AlC₂ was introduced as the carrier to enhance the effective concentration of the ECL reagent and improve the signal. ZnMnO<sub>2</sub> as the co-reaction promoter could further improve the ECL value. The highest signal was attributed to the combined catalytic action of Luminol@Ti<sub>3</sub>AlC<sub>2</sub> and ZnMnO<sub>2</sub>. A new method for the detection of AR was developed due to the resonance energy transfer (RET) between Luminol and AR. Under optimal conditions, the response to AR exhibited a linear range from 5.0 × 10<sup>−15</sup> to 5.0 × 10<sup>−5</sup>&#xa0;mol·L<sup>−1</sup>. The sensor achieved satisfactory AR detection in candy samples.</p> Graphical Abstract <p></p>

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Electrochemiluminescence sensor for the detection of Amaranth Red based on ZnMnO2-accelerator and Luminol functionalized Ti3AlC2

  • 期刊论文

  • 发表日期：

    2025年7月28日

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  • Ruidan Li,
  • Li Tian,
  • Yujia Song,
  • Yanjia Guo,
  • Guangping Ma,
  • Pengfei Han,
  • Hanyue Jiang,
  • Wenzhuo Wang,
  • Juan Lu

摘要

The synthesis of self-supporting material ZnMnO₂ by electrospinning and high-temperature calcination is reported. A highly sensitive electrochemiluminescence (ECL) sensor for Amaranth Red (AR) detection was constructed using Luminol@Ti₃AlC₂ and ZnMnO₂ with multi-step signal amplification. Luminol-O2 served as the ECL probe with luminescent signal originating from its reaction with dissolved oxygen. Ti₃AlC₂ was introduced as the carrier to enhance the effective concentration of the ECL reagent and improve the signal. ZnMnO2 as the co-reaction promoter could further improve the ECL value. The highest signal was attributed to the combined catalytic action of Luminol@Ti3AlC2 and ZnMnO2. A new method for the detection of AR was developed due to the resonance energy transfer (RET) between Luminol and AR. Under optimal conditions, the response to AR exhibited a linear range from 5.0 × 10−15 to 5.0 × 10−5 mol·L−1. The sensor achieved satisfactory AR detection in candy samples.

Graphical Abstract