Synergizing the internal electric field and ferroelectric polarization of the BiFeO₃/ZnIn₂S₄ Z-scheme heterojunction for photocatalytic overall water splitting

Abstract

Coupling internal electric field and ferroelectric polarization through the modulation of surface electronic structures to achieve high carrier separation and migration efficiency is attractive, but challenging in solar-to-chemical energy conversion....

Enhancing photocatalytic CO2 reduction via a single-domain ferroelectric Z-scheme heterojunction of BiFeO3/CsPbBr3 inducing dual built-in electric fields

“…27,28 For example, a few heterojunctions based on BiFeO 3 , such as BiFeO 3 @TiO 2 , 29 BiFeO 3 /BiVO 4 , 22 and BiFeO 3 /ZnIn 2 S 4 (ref. 30), have been demonstrated for various photocatalytic systems. However, research on boosting spatial charge separation induced by single-domain ferroelectric heterojunction photocatalysts, which incorporate polarization electric fields and a built-in-electric field at the heterojunction interface, both of which act as dual driving forces (DDFs) following a Z-scheme charge transfer mode, is lacking.…”

Ag-Doped ZnIn2S4 Nanosheets on Hollow Co9S8 Polyhedral Nanocages as Photocatalysts for Enhanced Hydrogen Production and Pollutant Reduction

“…Metallic sulfide semiconductors (e.g., CdS, CdIn 2 S 4, and In 2 S 3 ) have garnered significant attention as ultrathin materials due to their adjustable electronic and photoelectric properties. − ZnIn 2 S 4 , as a typical visible response ternary sulfide semiconductor with a suitable band gap and a compact interface, has been widely considered and explored. , The ultrathin ZnIn 2 S 4 nanosheet structure can improve the performance to a certain extent, but the photocatalytic activity is not yet sufficient to meet the requirements of a wider range of applications . The main reason for the low photocatalytic efficiency is that the photoelectron–hole pairs in the excited state are unstable and easy to recombine .…”

BiFeO3-Based All Perovskite Oxides Direct Z-Scheme Heterostructure for Efficient Oxygen Evolution

“…Nevertheless, the performance of pure BFO in oxygen evolution is limited by the small number of surface-active sites and poor photoelectric conversion efficiency . To address these issues, several approaches such as surface modifications, heteroatom doping, morphological design, and engineering defects have been employed to improve photocatalytic performance by increasing the photoelectric conversion efficiency and surface-active sites. , The construction of heterojunction with other semiconductors such as AuAg/BiFeO 3 , Ag@BiPO 4 /BiOBr/BiFeO 3 , graphene oxide/BiFeO 3 , BiFeO 3 /ZnFe 2 O 4 , BiVO 4 –BiFeO 3 , g-C 3 N 4 /BiFeO 3 , WO 3 /BiFeO 3 , BiFeO 3 /Znln 2 S 4 and BiFeO 3 @COF have been reported, however, the photocatalytic response still needs to be improved.…”