Efficient solar photocatalytic hydrogen production using direct Z-scheme heterojunctions

Abstract

We report the preparation of a series of heterojunctions made of Ta3N5 and TiO2 nanoparticles that show good property for photocatalytic hydrogen production. The composite photocatalyst with a light-response range...

Enhanced Photocatalytic Hydrogen Evolution from Water Splitting on Ta2O5/SrZrO3 Heterostructures Decorated with CuxO/RuO2 Cocatalysts

“…However, the RuO 2 content is relatively high compared to 0.1%RuO 2 /1%Cu x O/3%Ta 2 O 5 /SrZrO 3 , which shows a similar if not even better QE and STH performances than 1%RuO 2 /3%Ta 2 O 5 /SrZrO 3 . The estimated QE and STH values of 0.1%RuO 2 /1%Cu x O/3%Ta 2 O 5 /SrZrO 3 are 41 and 0.40%, which are competitive with either QE or STH values from other photocatalysts − and other perovskite heterostructure of high order (Table S2). For example, this is the case of the SrTiO 3 -based photocatalyst with a QE of 30% at λ = 360 nm .…”

NNaTaO3@Ta3N5 Core‐Shell Heterojunction with Controlled Interface Boosts Photocatalytic Overall Water Splitting

“…Obviously, the N100-2 h sample exhibited the smallest arc radius, indicating the lowest charge transfer resistance. [50,51] In addition, to further investigate the H 2 and O 2 evolution reaction potentials in overall water splitting, the linear sweep voltammetry curves of these samples were measured (Figure S24b, Supporting Information). The overpotentials of heterojunctions were found to be lower compared with that of pure NaTaO 3 and Ta 3 N 5 samples, which indicate improved surface redox reaction kinetics of the four-electron reaction in the tight heterojunction.…”