Electrochemical Behavior of Single CuO Nanoparticles: Implications for the Assessment of their Environmental Fate

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Giorgia ZampardiRichard G Compton

Abstract

The electrochemical behavior of copper oxide nanoparticles is investigated at both the single particle and at the ensemble level in neutral aqueous solutions through the electrode-particle collision method and cyclic voltammetry, respectively. The influence of Cl- and NO3- anions on the electrochemical processes occurring at the nanoparticles is further evaluated. The electroactivity of CuO nanoparticles is found to differ between the two types of experiments. At the single-particle scale, the reduction of the CuO nanoparticles proceeds to a higher extent in the presence of chloride ion than of nitrate ion containing solutions. However, at the multiparticle scale the CuO reduction proceeds to the same extent regardless of the type of anions present in solution. The implications for assessing realistically the environmental fate and therefore the toxicity of metal-based nanoparticles in general, and copper-based nanoparticles in particular, are discussed.

References

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Aug 24, 2017·Chemistry : a European Journal·Giorgia ZampardiRichard G Compton

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Citations

Nov 7, 2018·Physical Chemistry Chemical Physics : PCCP·Alex L SuhermanRichard G Compton
Feb 9, 2019·Physical Chemistry Chemical Physics : PCCP·Alex L SuhermanRichard G Compton
Mar 12, 2019·Angewandte Chemie·Mahmoud Elsayed HafezYi-Tao Long
Oct 23, 2020·Journal of Solid State Electrochemistry : Current Research and Development in Science and Technology·Giorgia Zampardi, Richard G Compton
Mar 5, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Jamil A BulediNadeem Qambrani
Sep 14, 2020·Ecotoxicology and Environmental Safety·Imtiaz AhmedWenhong Fan
Mar 26, 2019·Environmental Science & Technology·Jonas HedbergInger Odnevall Wallinder
Mar 11, 2019·ACS Biomaterials Science & Engineering·Nishant Verma, Nikhil Kumar

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