Comparative studies of mercapto thiadiazoles self-assembled on gold nanoparticle as ionophores for Cu(II) carbon paste sensors

Used gold nano-particles as an on/off switch for response of a potentiometric sensor to Al(III) or Cu(II) metal ions

“…GNPs are commonly used for fabrication of modified carbon paste electrode in voltammetric and amperometric methods, but we applied GNP-carbon paste electrode for potentiometric method. In our previous works, we demonstrated that the carbon paste electrodes modified with sulfur-containing compounds self-assembled on gold nano-particles constitute the excellent sensors for potentiometric determination of some metal cations [25][26][27]. The sol-gel route provides a useful method to prepare inorganic and organic-inorganic hybrid materials for use in chemical analysis.…”

Hydroxylation/carbonylation carbonaceous microspheres: A route without the need for an external functionalization to a “hunter” of lead(II) for electrochemical detection

“…Examples include ethylenediamine for Cu 2+ [1], cryptand [2.2.1] for Bi 3+ [2], fluorination for Cu 2+ [3], polyaniline for Pb 2+ [4], thiol functionalized chitosan for Hg 2+ and Cu 2+ [5,6], sodium dodecyl benzene sulfonate (NaDBS) for Cd 2+ and Zn 2+ [7], and 1-(2-pyridylazo)-2-naphthol for Pb 2+ [8]. Recently, chemisorbed organosulfur self-assembled monolayers (SAM) on a gold surface have received much attention [9][10][11][12][13][14][15][16][17][18][19][20][21]. Typically, SAMs of l-cysteine are used for the adsorptive stripping analysis of copper.…”

Electrochemical Determination of Cu(II) Ions by 4‐Formylphenylboronic Acid Modified Gold Electrode

“…The advantages of SAMs include simplicity of preparation, versatility, stability, reproducibility and possibility to introduce different chemical functionalities [21,22]. As an alternative to environmentally unfriendly mercury- [12] and bismuth- [23] based electrodes several papers related to the detection of metal ions [4,7,24,25] including Cu(II) ions [26][27][28][29] using SAM-modified electrodes have been published recently. However the most of these Cu(II) ion selective electrodes are affected by interfering heavy metal ions (e.g.…”