A promising p-type Co–ZnFe₂O₄ nanorod film as a photocathode for photoelectrochemical water splitting

Abstract

A p-type Co–ZnFe2O4 film with a one-dimensional (1D) rod-like morphology is fabricated for the first time on fluorine-doped tin oxide (FTO) through a hydrothermal reaction and sintering treatment.

Effects of zinc–aluminium injection on corrosion behaviour and semiconductor properties of carbon steel in the PHT system of PHWR

“…21 Mott-Schottky test is one of the main methods to investigate the semiconductor properties of oxide lms. 22 The relationship between the space charge capacitance (C) and the potential (E) of oxide lm in electrolyte solution can be described by Mott-Schottky equation, for n-type and p-type semiconductor are eqn (4) and ( 5) respectively: 1…”

Nanostructured ZnFe2O4: An Exotic Energy Material

“…However, different treatments on the ZnFe 2 O 4 electrode shows enhancement in water splitting photocurrent density ( J ) such as, post-synthesis with hydrogenation (at mild temperature) enhances electrical conductivity by introducing oxygen vacancies [ 88 ]. Hybrid microwave annealing treatment is better than conventional annealing treatment [ 89 , 90 ], and doping of semiconductor (e.g., p-type Co-ZnFe 2 O 4 ) [ 91 ] leads to change in electrical conductivity and offers high crystallinity.…”

Recent Advances in Spinel Ferrite-Based Thin Films: Synthesis, Performances, Applications, and Beyond

“…Hydrogen and oxygen evolution reactions are major reactions in water splitting, which were mentioned as a major approach to generate H 2 for clean energy (Zhao et al, 2017). Spinel ferrite-based thin films can be used as electrocatalysts in water splitting and energy convention storage (Kumbhar et al, 2015;Han et al, 2016;Sagu et al, 2018;Lei et al, 2019;Lan et al, 2020). For example, well-aligned mesoporous CoFe 2 O 4 films have been developed by surface epitaxial growth for an efficient electrocatalytic oxygen evolution reaction.…”

“…Electrospray technique-derived ZnFe 2 O 4 thin films with photo-absorber material for photoelectrochemical water splitting were fabricated and were found to increase discharge potential, induce more active sites, and enhance the photocurrent of 53 μAcm −2 at 1.23 V versus RHE (Wang et al, 2017). In addition, innovative p-type Co-doping ZnFe 2 O 4 films , as prospective cathodes for photoelectrochemical water splitting, were prepared via hydrothermal reaction and sintering treatment, in which the photocurrent density was 0.22 mA cm −2 at 0 V vs. RHE with improvement by about 7.33-fold compared with that of the n-type ZnFe 2 O 4 (0.03 mA cm −2 at 0 V vs. RHE) (Lan et al, 2020). Given the advantages of spinel ferrite-based thin films, further optimization and development in electrocatalytic performance is highly desired.…”

“…It is worth noting that some spinel ferrite-based thin films exhibited unique optical characteristics, such as absorption, optical bands, birefringence, and Faraday rotation, which have been adopted for magneto-optical recording devices and photocatalysts (Li et al, 2010;Bharathi et al, 2011;Chen et al, 2017;Chavan et al, 2019;Henning et al, 2019;Yu et al, 2019;Labchir et al, 2020;Lan et al, 2020;Choueikani et al, 2021). For example, low index magneto-optical CoFe 2 O 4silica nanocomposite thin films were fabricated using the composite method and presented an intrinsic Faraday rotation of 310 °/cm at 1,550 nm for an NP 1.5% volume fraction, and the modal birefringence was the order of 10 -4 (Choueikani et al, 2021).…”