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Electrochemical Quantification of Lead Adsorption on TiO 2 Nanoparticles
Author(s) -
Narouei Farideh Hosseini,
Kirk Kevin A.,
Andreescu Silvana
Publication year - 2021
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.202060152
Subject(s) - adsorption , electrochemistry , nanoparticle , titanium dioxide , titanium oxide , inorganic chemistry , humic acid , metal ions in aqueous solution , chemistry , metal , ion , nuclear chemistry , materials science , electrode , nanotechnology , organic chemistry , metallurgy , fertilizer
This work describes a rapid easy‐to‐use electrochemical method for quantifying lead (Pb 2+ ) adsorption on metal oxide nanoparticles (NPs), demonstrated here for titanium dioxide (TiO 2 ). The method was able to quantify Pb 2+ adsorption for concentrations as low as 0.95 μM, and up to 200 μM in NP dispersions, and to differentiate ion uptake in the presence and absence of a natural organic material, humic acid (HA). The method was selective for Pb 2+ against Cu 2+ , As 3+ , Zn 2+ , Cd 2+ and Cr 3+ ions when measured in the specific potential range from −0.4 to −0.6 V and was successfully demonstrated in water and home‐collected dust.