Publication: Disposable nanodiamond/graphene-based electrochemical sensor for determination of rhodium and platinum in electroplating process
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Issued Date
2025-11-15
Resource Type
ISSN
15726657
Scopus ID
2-s2.0-105017858412
Journal Title
Journal of Electroanalytical Chemistry
Volume
997
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Electroanalytical Chemistry Vol.997 (2025)
Suggested Citation
Meoipun A., Jittangprasert P., Chotiwit S., Chailapakul O., Siangproh W. Disposable nanodiamond/graphene-based electrochemical sensor for determination of rhodium and platinum in electroplating process. Journal of Electroanalytical Chemistry Vol.997 (2025). doi:10.1016/j.jelechem.2025.119506 Retrieved from: https://hdl.handle.net/20.500.14740/50597
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Abstract
This study introduces a novel disposable sensor platform for the first time by utilizing a nanodiamond-modified screen-printed graphene electrode (ND/SPGE) to achieve highly sensitive and selective determination of rhodium (Rh<sup>II</sup>) and platinum (Pt<sup>II</sup>) ions in industrial electroplating solutions. The ND/SPGE synergistically enhances electron transfer and surface interaction with target ions, allowing differential pulse anodic stripping voltammetry (DPASV) to obtain detection limits (LOD = 3S/N) of 0.35 ppm for Rh<sup>II</sup>and 0.52 ppm for Pt<sup>II</sup>with linear responses in the ranges of 7.5–75 ppm for Rh<sup>II</sup>and 12.5–85 ppm for Pt<sup>II</sup>. The sensor exhibits excellent selectivity in the presence of common interfering ions and demonstrates high accuracy with acceptable recovery (95 % and 105 %) and reproducibility (RSD < 5 %). These results highlight the potential of employing a ND/SPGE sensor as a reliable device for real-time monitoring and quality control of Rh<sup>II</sup>and Pt<sup>II</sup>concentrations in industrial electroplating processes. Therefore, this work offers a practical, cost-effective sensing platform for in-situ monitoring of precious metals in plating operations, aligning with the need for sustainable and efficient process control in metal finishing industries.