Abstract
AbstractIn this study, zinc oxide (ZnO) powders with dopant rates of 1 mol% thulium (Tm) (1Tm:ZnO), 2 mol% Tm (2Tm:ZnO), and 3 mol% Tm (3Tm:ZnO) nanoparticles were synthesized by co-precipitation method. Subsequently, Polyaniline (PANI)/1Tm:ZnO, PANI/2Tm:ZnO, and PANI/3Tm:ZnO nanocomposite sensors were prepared using a low-cost and simple sonication method. The results showed that the prepared PANI/1Tm:ZnO-based biosensor detected dopamine in the concentration range of (0.8–6.5) µM with a sensitivity of 0.2568 µAµM−1cm−2. Using these sensitivity values of the sensor, the LOD and LOQ values of the PANI/1Tm:ZnO-based sensor were calculated as 1.92 µM and 5.8 µM, respectively. The incorporation of 1% Tm into ZnO host (PANI/1Tm:ZnO) significantly enhanced the sensitivity of the biosensors.
Publisher
Springer Science and Business Media LLC
Reference80 articles.
1. H.S. Nejad, F.G. Nejad, H. Beitollahi, Development of a highly sensitive voltammetric sensor for the detection of folic acid by using MoS2 and ionic liquid-modified carbon paste electrode. ADMET and DMPK 11(3), 361–371 (2023)
2. F. Beigmoradi, H. Beitollahi, Fe3O4/GO nanocomposite modified glassy carbon electrode as a novel voltammetric sensor for determination of bisphenol A. J. Electrochem. Sci. Eng. 12(6), 1205–1214 (2022)
3. H. Beitollahi, S. Tajik, M.R. Aflatoonian, A. Makarem, Glutathione detection at carbon paste electrode modified with ethyl 2-(4-ferrocenyl-[1, 2, 3] triazol-1-yl) acetate, ZnFe2O4 nano-particles and ionic liquid. J. Electrochem. Sci. Eng. 12(1), 209–217 (2022)
4. H. Beitollahi, S. Tajik, M.R. Aflatoonian, A. Makarem, A sensitive Cu (salophen) modified screen-printed electrode for simultaneous determination of dopamine and uric acid. J. Electrochem. Sci. Eng. 12(1), 199–208 (2022)
5. G.A. Mohammadi, H. Beitollahi, I. Sheikhshoaie, S. Tajik, M.R. Aflatoonian, An electrochemical sensing platform based on Fe3O4@ CuO core-shell nanocomposite modified screen printed graphite electrode for sensitive hydroxylamine detection. Int. J. Environ. Anal. Chem. 103(19), 7773–7787 (2023)