Novel design of non-enzymatic sensor for rapid monitoring of hydrogen peroxide in water matrix

Abstract

A simple and reliable design of the non-enzymatic sensor capable of instant detection of broad range of hydrogen peroxide (H 2 O 2) concentrations in various water-based matrixes has been presented. Manufacturing of the sensor was based on the manganese dioxide (MnO 2)-nonfunctionalized single walled carbon nanotubes (SWCNTs)-Nafion nanocomposite modified glassy carbon electrode (MnO 2 /SWCNTs-Nf/GCE). The electrochemical behavior of hydrogen peroxide at this sensitive platform was verified by the cyclic voltammetry and amperometry. The obtained results have demonstrated that the modified GCE exhibited an excellent electrocatalytic activity toward hydrogen peroxide. The parameters related to this sensor, such as amount of MnO 2 , applied potential and pH value were optimized to attain a broad working linear range 6 10 0. 3   M, with detection limit of 0.52  10-6 M (17.7 ppb) of detection H 2 O 2. Developed electrode was tested for stability and accuracy measurements in environmental/biological conditions, such as pH and interference of common ions, namely calcium, magnesium, nickel, copper, bicarbonate and citrate, showing an excellent stability and repeatability in tested ranges.

Electrochemically Prepared Unzipped Single Walled Carbon Nanotubes-MnO2 Nanostructure Composites for Hydrogen Peroxide and Glucose Sensing

“…The current intensity of oxidation and reduction during electrodeposition of MnO 2 was increased with repetitive voltammetric cycles ( Figure 5B). This observation is consistent with our previous work [27]. It also suggests that large amounts of MnO 2 nanoparticles were successfully attached due to enlarged surface area with increasing active sites on unzipped SWCNTs.…”

“…Recently, metal and transition metal oxide nanoparticles have been extensively applied in developing high efficient electrochemical sensing toward H 2 O 2 and glucose [23][24][25]. Particularly, manganese oxide (MnO 2 ) nanoparticles are one of the most promising inorganic materials in fabricating sensing devices due to high catalytic ability, low-cost, high energy density, and environmental benignity [26][27][28][29].…”

On-line Measurement of Sub-ppb Level Hydrogen Peroxide in Ultrapure Water Production Process

“…According to the International Roadmap for Devices and Systems (IRDS), announced in 2019, the concentration of H 2 O 2 in the UPW used during the semiconductor production process should be maintained below 3 part per billion (ppb) 4 concentrations have been extensively studied and are widely used in the field. The detection limits of these methods are known to range from tens to hundreds of ppb [5][6][7][8][9] . The chemiluminescence method quantifies H 2 O 2 concentrations by detecting the luminescence when H 2 O 2 reacts with luminol, in the presence of an appropriate catalyst.…”

Efficient Amperometric Detection of H2O2 using Gold Nanoparticle decorated Polythiophene/Hematite Ore Nanocomposite

“…The universal liquid oxidizer, H 2 O 2 , is an important reactive oxygen species (ROS) that has extensive applications in both the environmental and manufacturing sectors. For instance, H 2 O 2 has been recognized as an intermediate or indispensable performer in different fields including pharmaceuticals, 1 food industries, 2 paper industries, 3 chemical industries, 4 biomedicine diagnosis, 5 waste treatment, 6 and as an oxidant in a fuel cell (green energy). 7 Nonetheless, several investigations exhibited that excessive concentration of H 2 O 2 incredibly influences regular physiological practice and causes various diseases like cardiovascular, Parkinson's, and Alzheimer's.…”