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<p>This study focuses on the synthesis of active anodes by using platinum–ruthenium and carbon nanotubes (CNTs) for the electrochemical oxidation of the organic pollutant phenol. CNTs were grown on a carbon fiber (CF) as the substrate through catalytic chemical vapor deposition. Then, these CNT/CF substrates were coated with Pt, RuPt alloy, and Ru@Pt core–shell nanoparticles to produce a series of anodes such as CNT/TiNi-CF, Pt-CNT/TiNi-CF, RuPt-CNT/TiNi-CF, and Ru@Pt-CNT/TiNi-CF. The properties of the obtained electrodes were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). CV and EIS analyses revealed that Ru@Pt-CNT/TiNi-CF had the highest specific area-normalized capacitance of 3.83 × 10<sup>−2</sup> F cm<sup>−2</sup>, along with the lowest polarization resistance of 135.7&#xa0;Ω . Furthermore, Ru@Pt-CNT/TiNi-CF demonstrated superior electrochemical oxidation performance, with a degradation efficiency of 99.87% and a mineralization efficiency of 50.93%. Stability tests confirmed the excellent reusability of all the electrodes even after eight cycles. These findings highlight the promising electrochemical catalytic properties of the synthesized electrodes for the degradation and mineralization of phenol as an organic pollutant index, thereby confirming their great potential for practical applications in the future.</p>

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Facile development of platinum–ruthenium and carbon nanotube-based anodes for electrochemical degradation of phenol

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • Nhat Huy Luan,
  • Chiung-Fen Chang,
  • Zih-Jyun Chen

摘要

This study focuses on the synthesis of active anodes by using platinum–ruthenium and carbon nanotubes (CNTs) for the electrochemical oxidation of the organic pollutant phenol. CNTs were grown on a carbon fiber (CF) as the substrate through catalytic chemical vapor deposition. Then, these CNT/CF substrates were coated with Pt, RuPt alloy, and Ru@Pt core–shell nanoparticles to produce a series of anodes such as CNT/TiNi-CF, Pt-CNT/TiNi-CF, RuPt-CNT/TiNi-CF, and Ru@Pt-CNT/TiNi-CF. The properties of the obtained electrodes were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). CV and EIS analyses revealed that Ru@Pt-CNT/TiNi-CF had the highest specific area-normalized capacitance of 3.83 × 10−2 F cm−2, along with the lowest polarization resistance of 135.7 Ω . Furthermore, Ru@Pt-CNT/TiNi-CF demonstrated superior electrochemical oxidation performance, with a degradation efficiency of 99.87% and a mineralization efficiency of 50.93%. Stability tests confirmed the excellent reusability of all the electrodes even after eight cycles. These findings highlight the promising electrochemical catalytic properties of the synthesized electrodes for the degradation and mineralization of phenol as an organic pollutant index, thereby confirming their great potential for practical applications in the future.