Surface plasmon-driven photoelectrochemical water splitting of a Ag/TiO₂ nanoplate photoanode

Abstract

A hybrid nanostructure Ag/TiO2 photoelectrode for PEC water splitting with a remarkable high photocurrent density, 0.35 mA cm−2 (5 fold higher than that of the pristine TiO2 photoeletrode) was fabricated by a facile one-pot hydrothermal and electrodeposition method.

Optimizing the performance of Auy/Nix/TiO2NTs photoanodes for photoelectrochemical water splitting

“…The measured photocurrent density of TiO 2 NTs was 0.07 mA cm −2 which is comparable with published data on TiO 2 photoanodes. 67 Photoanodic current spikes can be observed for TiO 2 NTs and Ni x /TiO 2 NTs photoanodes ( Fig. 11c ) at the onset of the potential attributed to the undesired fast recombination of photo-generated carriers at photoanode surface which limit their transport to the electrolyte.…”

“…65 The measured photocurrent density of the prepared Ni Increase the number of cycles above that limit would cause a slight reduction in the photocurrent density probably due to creation of additional recombination sites. 67 The observed enhanced OER activity of Au 30 /Ni 20 /TiO 2 NTs could be attributed to LSPR effect of nanometric gold which increased solar light harvesting and the synergism between Ni and Au which led to better charge separation and transportation. The obtained data of chronoamperometry was in accordance with the data obtained from optical measurements and linear sweep voltammetry.…”

Integration of a Cu2O/ZnO heterojunction and Ag@SiO2 into a photoanode for enhanced solar water oxidation

“…1 Photoelectrochemical water splitting (PEC-WS) has attracted extensive research attention because it can be a low-cost, renewable and environmentally friendly method for hydrogen production. 2,3 Various metal oxide semiconductor materials, such as TiO 2 , 4 ZnO, 5 a-Fe 2 O 3 , 6 and BiVO 4 , 7 have been widely applied to investigate their PEC-WS performances. Among these, ZnO is an n-type semiconductor with a band gap energy of ∼3.3 eV, which exhibits a suitable band position and high electron mobility, and can be considered as one of the popular semiconductor materials in the photocatalysis eld.…”

Dual functional WO3/BiVO4 heterostructures for efficient photoelectrochemical water splitting and glycerol degradation

“…The primary reasons are PEC water splitting process requires three fundamental steps, including light absorption, photoexcited charge separation and transportation, and photoexcited charge reaction. 13 During the past ve decades, earth-abundant and low-cost materials metal oxide semiconductors such as TiO 2 , [16][17][18] ZnO, 19 WO 3 , [20][21][22] Fe 2 O 3 , 23,24 Cu 2 O, 25 and BiVO 4 26,27 have been extensively explored as photocatalyst materials in the PEC system. These studies reveal that metal oxide materials have great potential to be promising photoelectrode materials for PEC water splitting.…”