Formation of MnO₂-coated ITO electrodes with high catalytic activity for enzymatic glucose detection

Abstract

The catalytic properties of MnO2 depend strongly on deposition conditions. We systematically investigate the activity of MnO2 films towards H2O2 decomposition and exemplify this by the construction of an enzymatic glucose sensor.

Polishing Mechanism of CMP 4H-SiC Crystal Substrate (0001) Si Surface Based on an Alumina (Al2O3) Abrasive

“…Figure 6b shows the Mn 2p core-level spectrum with two peaks located at 654.4 eV and 642.6 eV. This corresponds to the spin doublet of Mn 2p 1/2 and Mn 2p 3/2 with a separation of 11.7 eV, confirming the existence of Mn 4+ in the powder [14,15].…”

Acetate-assisted in situ electrodeposited β-MnO2 for the fabrication of nano-architectonics for non-enzymatic glucose detection

“…This can be attributed to different material structures and surface oxidation state valences, while the latter limited electrolyte diffusion at high scan speeds and slower charge collection ability. 40 In addition, compared with the pristine MnO 2 electrode, the Ac-MnO 2 electrode showed a significantly improved current response, which can be ascribed to the enlarged surface area with the mesoporous nano-architecture and has shown a good performance to catalyze glucose. Such inferences can also be proven from the amperometric response of the above-mentioned samples with partially increasing glucose concentration in 0.5 M NaOH at a constant applied potential, as shown in Fig.…”