Electrodeposition of palladium nanoparticles on fullerene modified glassy carbon electrode for methane sensing

A novel nanocomposite of palladium nanoparticles-modified fullerene (Pd NPs-C60) was fabricated by an electrodeposition technique on a glassy carbon (GC) electrode and its electrochemical properties were studied. It was found that Pd NPs incorporating with C60 can enhance its sensitivity and selectivity to CH4 at ambient conditions. The Pd NPs-C60 modified GC electrode shows better electron-transfer behavior than that of bare GC, pristine C60 modified GC, and Pd NPs modified GC electrodes. The Pd NPs-C60 modified GC electrode displays stable and reproducible response to CH4 and could be used repeatedly. Our results demonstrate that the Pd NPs-C60 nanocomposite should be a promising and useful nanomaterial for developing sensitive electrochemical sensors.