Fast in-situ photodeposition of Ag and Cu nanoparticles onto AgTaO3 perovskite for an enhanced photocatalytic hydrogen generation Article uri icon

abstract

  • The M (M = Ag, Cu) nanoparticles were deposited by a fast in-situ photoreduction method onto the AgTaO3 photocatalyst surface using 1, 2, and 5 wt %25 ratios, in order to investigate their photocatalytic properties for hydrogen production. The obtained results indicated a nanoparticles growth <20 nm in diameter during 10 min of photoreduction process for both nanoparticles. The M (M = Ag, Cu) NPs/AgTaO3 exhibited superior photocatalytic activity than bare AgTaO3, with an efficiency increment of around 11 and 30 times at 2 wt %25 ratio of Ag and Cu nanoparticles, respectively. The excellent photocatalytic activity could be related to the surface plasmon resonance effect of nanoparticles, preventing the electron-hole recombination. Additionally, the optical and photoelectrochemical characterization revealed the presence and the effect of oxidized species of the nanoparticles, with a direct impact on the transport of photogenerated charge carriers for the improvement of the photocatalytic activity. © 2020 Hydrogen Energy Publications LLC

publication date

  • 2020-01-01