A highly efficient electrochemical sensor containing polyaniline/cerium oxide nanocomposites for hydrogen peroxide detection

Abstract

An efficient electrochemical sensor containing (PANI/CeO2) for the detection of hydrogen peroxide has been fabricated using the in situ oxidative polymerization. The fabricated electrode sensor was successfully used to detect H2O2 in real samples.

Hybridized sulfated-carboxymethyl cellulose/MWNT nanocomposite as highly selective electrochemical probe for trace detection of arsenic in real environmental samples

“…15,16 As we all know, differential pulse voltammetry (DPV), cyclic voltammetry (CV), linear sweep voltammetry (LSV), and electrochemical impedance spectroscopy have been employed for the sensitive determination of trace metal ions in different environment samples. 17,18 However, the electrochemical activity of glassy carbon electrodes (GCE) has poor selectivity, sensitivity, and repeatability to real samples as a result of delayed charge transfer kinetics, interference of coexisting metal ions, and low catalytic activity. To enhance the electrochemical activity, the GCE needs to be functionalized through different active substances (metal nanoparticles or carbon nanomaterials, etc.)…”

“…to improve the electrical stability and sensitivity, which are more suited for determining toxic metal ions in complex samples. 18,19 Narayana et al synthesized Li 2 TiO 3 multiwalled carbon nanotubes (MWNT) nanocomposite to modify GCE and used it as an electrochemical sensor for the trace detection of dopamine. The CV and DPV response of the constructed sensor demonstrated excellent selectivity and sensitivity towards dopamine with a detection limit of 1.71 mmol L −1 .…”

Ultrasensitive functionalized CeO2/ZnO nanocomposite sensor for determination of a prohibited narcotic in sports pethidine hydrochloride

“…Conceptually, these materials produce operationally consistent and have additional qualities for the coated sensors, including portability, exceptional flexibility, and maintenance-free operation. Better transducer materials including conducting polymers, carbon-based materials, and other common metal and metal oxide nanomaterials have been focused in numerous studies [ 52 ]. By observing the potential response of 1.0 × 10 −8 -1.0 × 10 −2 mol L −1 of PTD solutions, the response time was calculated.…”

Hydrothermal Synthesis of Mixed Oxide Compositions of Cobalt‐Zirconium and their Catalytic Activity in the Decomposition of Hydrogen Peroxide

“…Perspective materials for catalytic decomposition of hydrogen peroxide are oxides of manganese, cobalt, nickel, cerium, zirconium and others. [7,[17][18][19][20][21][22][23][24][25][26][27][28] As during the interaction of hydrogen peroxide with these oxides, the significant reduction in its concentration is possible, so the perspectives of such combinations are favorable for technical and economic reasons. Especially since the listed oxides are poorly soluble in water, due to which the appearance of the corresponding ions in drinking water in unacceptable (above the MPC) quantities are excluded.…”

“…Perspective materials for catalytic decomposition of hydrogen peroxide are oxides of manganese, cobalt, nickel, cerium, zirconium and others [7,17–28] . As during the interaction of hydrogen peroxide with these oxides, the significant reduction in its concentration is possible, so the perspectives of such combinations are favorable for technical and economic reasons.…”