Fabrication of Pd-loaded α-Fe2O3 decorated rGO hybrids for highly sensitive H2 sensing

Abstract

Pd-loaded α-Fe2O3 particles decorated on reduced graphene oxide (rGO) hybrids have been successfully synthesized via hydrothermal. This simple strategy can be expected to provide the conditions for the manufacture of similar metal oxide mixtures using different precursors. The morphological and structural characteristics of the product were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectrometry (XPS). Utilized as the composite materials in sensors, the sensor based on Pd(0.5%)-Fe2O3/rGO demonstrated an excellent selectivity towards H2 at 180 °C in various gases, with a highly sensitive response of 78.4% along with a fast response and recovery (19 s, 6 s) to 1000 ppm H2. The combination of α-Fe2O3 particles decorated on rGO and catalytic activity of Pd0-loaded present a very charming sensing behavior for applications as real-time monitoring gas sensors.