An efficient visible light driven bismuth ferrite incorporated bismuth oxyiodide (BiFeO3/BiOI) composite photocatalytic material for degradation of pollutants

Preparation and photoelectrochemical properties of BiFeO3/BiOI composites

“…Note that the intensity of the peaks situated at 3411 cm À1 and 1620 cm À1 decreases in BFO/BI-10, which indicates the co-existence of BFO and BiOI. 16 Moreover, the characteristic peak of BFO positioned at 553 cm À1 shis aer BFO combines with BiOI, which suggested the formation of a heterojunction between BFO and BiOI. 24…”

“…and much higher than that of pure BiOI (1.8 mA cm À2 ). Introducing BiOI composites on the BFO thin lms results in the formation of a heterojunction in the interface between BFO and BiOI, which benets the separation of the photogenerated electrons and holes due to the improvement in the lifetime period of the photoinduced carriers, 16,25 thus improving the photocurrent density. However, overdeposition of BiOI will shield BFO layer absorption from light, 27,28 resulting in the low photocurrent density of BFO/BI-12.…”

“…Considering the abovementioned unique characteristics of BFO and BiOI, we are curious about the synergistic effect between the spontaneous polarization property of BFO and the peculiar layered structure of BiOI. Malathi et al 16 attempted to fabricate BFO/BiOI composite particles for the photodegradation of RhB but achieved only a low photocurrent density of 0.06 mA cm À2 , exhibiting a negligible improvement of 0.02 mA cm À2 over BiFeO 3 . In this work, BiOI-decorated BFO thin lms were prepared by chemical solution deposition and electrodeposition.…”

Ferrite Materials for Photoassisted Environmental and Solar Fuels Applications

“…In these two cases, the enhancement of the photoactivity could be ascribed to the prevalence of Z-scheme mechanism of charges transfer. The synthesis of a BiFeO3/BiOI composite by wet impregnation was carried out by Malathi et al [92]. The authors designed a photocatalyst that resulted to be quite active and stable after several runs.…”

Perovskite Oxide–Based Materials for Photocatalytic and Photoelectrocatalytic Treatment of Water

“…Several studies have been done on ferrite-based perovskites, and majorities of them are in combination with other metals, nanomaterials, and other semiconductors with a purpose of extending light absorption range, retarding the electron hole recombination, and boosting the electron mobility toward efficient charge separation to achieve an excellent photocatalytic degradation of pollutants in water (Behzadifard et al, 2018;Malathi et al, 2018;Yahya et al, 2019;Bahmani et al, 2020;Dixit et al, 2020;Diyan et al, 2020;Haruna et al, 2020;Kumar P. et al, 2020).…”