Zr/ZrO2 nanotube electrode for detection of heavy metal ions

[Display omitted] •An integrated system for photoreduction and sensing has been developed.•Zr/ZrO2 nanotube electrode for heavy metal detection was prepared.•Solutions containing Cd(II), Pb(II), Cu(II) and Hg(II) were used for analysis.•Linear calibration plots and good detection limits were obtaine...

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Bibliographic Details
Published in:Electrochemistry communications 2020-01, Vol.110, p.106614, Article 106614
Main Authors: Buica, George-Octavian, Stoian, Andrei Bogdan, Manole, Claudiu, Demetrescu, Ioana, Pirvu, Cristian
Format: Article
Language:English
Subjects:
Metal ions
Photoreduction
Sensing
ZrO2 nanotubes
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Summary:[Display omitted] •An integrated system for photoreduction and sensing has been developed.•Zr/ZrO2 nanotube electrode for heavy metal detection was prepared.•Solutions containing Cd(II), Pb(II), Cu(II) and Hg(II) were used for analysis.•Linear calibration plots and good detection limits were obtained for Pb, Cu and Hg. An integrated system for photo-accumulation (photoreduction) and sensing, based on a Zr/ZrO2 electrode, has been developed for the detection of trace heavy metals. The nanostructuring of the Zr/ZrO2 electrode was achieved by anodizing, which produced a nanotubular structure. Solutions containing Cd(II), Pb(II), Cu(II) and Hg(II) were used for analysis. Linear calibration plots were obtained in the concentration ranges from 8 × 10−8 to 10−5 M for Pb(II), 5 × 10−8 to 2 × 10−6 M for Cu(II) and 4 × 10−8 to 10−5 M for Hg(II).
ISSN:1388-2481
1873-1902
DOI:10.1016/j.elecom.2019.106614