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<p>This study explored the enhanced catalytic performance of Ta<sub>3</sub>N<sub>5</sub>-TaON nanohybrids functionalized with organic polymers and PID-CO-PEDOT, with a focus on their electrochemical activity and efficacy in dye degradation.&#xa0;The design of advanced catalysts and the construction of multi-core–shell heterostructures present significant challenges, largely due to limited electron transfer efficiency, particularly in the absence of polymer nanocomposite materials. This study presents the synthesis of well-defined hexagonal multi-core–shell heterostructures through a low-temperature uniform reduction process via chemical methods. By optimizing pH and scan rates, the catalytic efficiency of these heterostructures was enhanced, enabling the simultaneous oxidation of dopamine (DA), paracetamol (PC), tryptophan (TP), and caffeine (CF). Incorporation of PID-CO-PEDOT and refinement of the metal oxynitride interface significantly enhance the electrical conductivity of the nanocomposite, enabling higher sensitivity and ultralow detection limits for analytes such as dopamine (DA), paracetamol (PC), tryptophan (TP), and caffeine (CF), with nanomolar detection limits of 7.735&#xa0;nM, 7.447&#xa0;nM, 7.377&#xa0;nM, and 7.154&#xa0;nM, respectively, using the DPV technique.&#xa0;Furthermore, Ta<sub>3</sub>N<sub>5</sub>-TaON-PID-CO-PEDOT-modified GCE electrode was successfully applied for the real sample detection of caffeine in the presence of pharmaceutical tablets, Tempera Boot, and coffee rust several commercially available paracetamol formulations, and satisfactory results were obtained.&#xa0;Additionally, the multi-core–shell heterostructure demonstrated outstanding catalytic efficiency, achieving 99% photodegradation of methylene blue (MB). The investigation of its catalytic mechanism underscores its potential for applications in fuel cells, hydrogen production, and energy storage.</p>

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Engineering Ta3N5-TaON-polyindole-CO-PEDOT hybrid for advanced electrochemical and photocatalytic performance

  • 期刊论文

  • 发表日期：

    2025年6月17日

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  • S. Munusamy,
  • G. Gnanamoorthy,
  • T. Bavani,
  • Raja Venkatesan,
  • E. Ragulkumar,
  • Maher M. Alrashed,
  • Krishna Prakash Arunachalam

摘要

This study explored the enhanced catalytic performance of Ta3N5-TaON nanohybrids functionalized with organic polymers and PID-CO-PEDOT, with a focus on their electrochemical activity and efficacy in dye degradation. The design of advanced catalysts and the construction of multi-core–shell heterostructures present significant challenges, largely due to limited electron transfer efficiency, particularly in the absence of polymer nanocomposite materials. This study presents the synthesis of well-defined hexagonal multi-core–shell heterostructures through a low-temperature uniform reduction process via chemical methods. By optimizing pH and scan rates, the catalytic efficiency of these heterostructures was enhanced, enabling the simultaneous oxidation of dopamine (DA), paracetamol (PC), tryptophan (TP), and caffeine (CF). Incorporation of PID-CO-PEDOT and refinement of the metal oxynitride interface significantly enhance the electrical conductivity of the nanocomposite, enabling higher sensitivity and ultralow detection limits for analytes such as dopamine (DA), paracetamol (PC), tryptophan (TP), and caffeine (CF), with nanomolar detection limits of 7.735 nM, 7.447 nM, 7.377 nM, and 7.154 nM, respectively, using the DPV technique. Furthermore, Ta3N5-TaON-PID-CO-PEDOT-modified GCE electrode was successfully applied for the real sample detection of caffeine in the presence of pharmaceutical tablets, Tempera Boot, and coffee rust several commercially available paracetamol formulations, and satisfactory results were obtained. Additionally, the multi-core–shell heterostructure demonstrated outstanding catalytic efficiency, achieving 99% photodegradation of methylene blue (MB). The investigation of its catalytic mechanism underscores its potential for applications in fuel cells, hydrogen production, and energy storage.