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2000
Volume 21, Issue 5
  • ISSN: 1573-4137
  • E-ISSN: 1875-6786

Abstract

Introduction

A novel attempt to degrade alizarine yellow R (AYR) by lead dioxide (PbO)/ neodymium (Nd) coated Ti anode was investigated.

Methods

Ti/Zr-SnO/PbO-Nd electrode showed high oxygen evolution potential, high current density, and neutral conditions, which favored the degradation of AYR. The PbO-Nd layer on Ti/Zr-SnO was further characterized by scanning electron microscopy, X-ray diffraction analysis, and X-ray photoelectron spectroscopy. The electrochemical properties of Ti/Zr-SnO/PbO-Nd electrode were evaluated by cyclic voltammetry, AC impedance spectroscopy, and accelerated life test.

Results

The relatively higher oxygen evolution overpotential (~1.80 V) of the developed electrode can effectively suppress the occurrence of surface side reactions and oxygen evolution. A relatively lower charge transfer resistance (, 18.0 Ω) of Ti/Zr-SnO/PbO-Nd electrode could be found. The Ti/Zr-SnO/PbO-Nd electrode exhibited an accelerated lifetime of 110 min under a very high current density of 10,000 A/m2. The doping of Nd could produce loosely-stacked sheet-like structures, thus, the number of active sites on the electrode surface increases.

Conclusion

Moreover, an outstanding conductivity of Ti/Zr-SnO/PbO-Nd electrode was obtained, which favored the electron transfer and catalytic activity of the modified electrode. The Ti/Zr-SnO/PbO-Nd electrode exhibited improved electrochemical performances and higher oxygen evolution potential, and the highest oxygen evolution potential is 1.80 V. Under the current density of 30 mA/cm2, the electrocatalytic degradation efficiency of 92.3% could be achieved in 180 min. The electrochemical oxidation of AYR at the Ti/Zr-SnO/PbO-Nd electrode proved to be feasible and effective, indicating that it might be used for the elimination of AYR from wastewater.

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2024-08-30
2025-11-03

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/content/journals/cnano/10.2174/0115734137325822240819050628
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Fabrication of Ti/Zr-SnO2/PbO2-Nd Electrode for Efficient Electrocatalytic Degradation of Alizarine Yellow R
Curr. Nanosci. 21, 927 (2025); https://doi.org/10.2174/0115734137325822240819050628
/content/journals/cnano/10.2174/0115734137325822240819050628
/content/journals/cnano/10.2174/0115734137325822240819050628
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  • Article Type:     Research Article
Keyword(s): alizarin yellow R; electrochemical degradation; high efficiency; neodymium doping; Ti/PbO2 electrode

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