Nanoengineered PDMS/Pd/ZnO-Based Sensor to Improve Detection of H₂ Dissolved Gas in Oil at Room Temperature.

ABSTRACT: The current research aims to synthesize zinc oxide decorated with palladium nanoparticles and develop a stable sensor with high sensitivity to hydrogen gas dissolved in oil. ZnO nanorods (NR) were synthesized by a hydrothermal method directly onto a commercial sensor board with gold interdigital electrodes, followed by functionalization with Pd nanoparticles (NP) by drop casting. SEM images show ZnO NRs with an average diameter of ∼220 nm and Pd spherical NPs with diameters of 35-75 nm. Finally, the sensing properties were examined by immersing the sensor into insulating mineral oil in a closed system, where different H₂ concentrations (from 0 up to 500 ppm) were injected into the headspace and then dissolved in the mineral oil, according to the Ostwald coefficient. All measurem

SUBMITTER: Lustosa GMMM 

PROVIDER: S-EPMC12038843 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature