Yıldız, D.E.Unal, F.Taşaltın, Nevin2024-07-122024-07-1220240957-452210.1007/s10854-024-12155-w2-s2.0-85186465899https://doi.org/10.1007/s10854-024-12155-whttps://hdl.handle.net/20.500.12415/7257In 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. © The Author(s) 2024.eninfo:eu-repo/semantics/openAccessAminesBiosensorsNeurophysiologyPrecipitation (Chemical)Synthesis (Chemical)ThuliumZno NanoparticlesCoprecipitation MethodDopamine DetectionsElectrochemicalsNanocomposite SensorsNon-EnzymaticSynthesisedVoltammetric SensorZinc Oxide NanocompositesZinc Oxide NanoparticlesZinc Oxide PowderIi-Vi SemiconductorsArticle7Q235