fig3
Figure 3. (A) Scheme of Fabrication of ALD Pt@VG; (B) Schematic illustration of the H2-sensing mechanism on the Pt@VG sensor with the role of the Pt catalyst in the adsorption and decomposition of H2 molecules, followed by a charge transfer process. Inset (left): schematic diagram showing charge transfer after H is adsorbed on Pt. EF represents the Fermi energy level and ΦPt represents the work function of Pt. Inset (right): schematic illustration of Pt-decorated VG grown on SiO2/Si substrates used for H2 sensing. Adapted with permission[15]. Copyright 2024, American Chemical Society. ALD: Atomic layer deposition; VG: vertical graphene.
