BaZrO3 based non enzymatic single component single step ceramic electrochemical sensor for the picomolar detection of dopamine

Review—Catalytic Electrochemical Biosensors for Dopamine: Design, Performance, and Healthcare Applications

“…Liu et al 170 demonstrated amperometric detection in real human blood serum using an SPCE coated with a gold nanoparticlepeptide hydrogel with an LOD of 0.12 nM and linear range of 0.0002-1.9 μM, showing potential for clinical testing ex vivo. Other materials such as Dy 2 MoO 6 nanozyme 150 and barium zirconate perovskite crystallite 140 also show oxidase-mimetic properties and the ability to detect dopamine in real human urine and blood serum, with an LOD of 8.3 nM, linear range of 20-340 μM, 150 and 5 pM with linearity up to 50 μM, 140 respectively, showing promise for use as clinical biosensors.…”

Recent Progress of Covalent Organic Frameworks Applied in Electrochemical Sensors

“…The working electrode plays an important role in the qualitative and quantitative detection performance of the sensor. Many advanced materials have been applied to prepare the working electrodes of electrochemical sensors, mainly including graphene, carbon nanotubes (CNTs), quantum dots (QDs), metal nanoparticles (NPs), metal oxides, conductive polymers (CPs), biomolecules, enzyme, black phosphorus, Mxene, polyoxometalates (POMs), Perovskite, MOFs, COFs, and so on. Compared with other materials, COFs possess excellent structural diversity, enabling them to be fine-tuned to meet specific sensing requirements.…”

Chemical stability aspects of BaCe0.7–xFexZr0.2Y0.1O3–δ mixed ionic-electronic conductors as promising electrodes for protonic ceramic fuel cells

“…In the crystal structure of a comparable cubic barium zirconate, the Ba atom is located at the corner of the cube, the Zr atom at the centre of the body and the O atom at the centre of the face. The Zr atom, in this case, creates an octahedral ZrO6 cluster, while the Ba atom creates a cubo-octahedral BaO12 cluster [38]. It is assumed that in the case of an ideal cubic perovskite (ABO3), no first-order active modes would be observable in the Raman spectra since the phonons of its zone centre are in a centrosymmetric position [39,40].…”

“…It is assumed that in the case of an ideal cubic perovskite (ABO3), no first-order active modes would be observable in the Raman spectra since the phonons of its zone centre are in a centrosymmetric position [39,40]. However, according to the literature reports active first-order Raman modes can be detected for real cubic perovskites when their centrosymmetry is violated or distorted by defects caused by acceptor doping, deformations, or impurities [38,41].…”