Development of ABO₄‐type photoanodes for photoelectrochemical water splitting

Abstract

Photoelectrochemical (PEC) water splitting with zero carbon emissions is a promising technology to solve the global issues of energy shortage and environmental pollution. However, the current development of PEC systems is facing a bottleneck of low solar‐to‐hydrogen (STH) efficiency (<10%), which cannot meet the demand of large‐scale H2 production. The development of low‐cost, highly active, and stable photoanode materials is crucial for high STH efficiency of PEC water splitting. The recent development of BiVO4 as photoanode materials for PEC water splitting has been a great success, and ABO4‐type ternary metal oxides with a similar structure to BiVO4 have high development potential as efficient photoanodes for high‐performance PEC water splitting. The design and development of ABO4 photoanodes for PEC water splitting are critically reviewed with special emphasis on the modification strategies and performance improvement mechanisms of each semiconductor. The comprehensive analysis in this review provides guidelines and insights for the exploration of new high‐efficiency photoanodes for solar fuel production.

Study on Water Splitting of the 214-Type Perovskite Oxides LnSrCoO4 (Ln = La, Pr, Sm, Eu, and Ga)

“…The rate-determining steps for these three catalysts include all of the generation of O 2 from the OOH*, and the calculated Gibbs free energy changes (Δ G ) are 4.10, 2.68, and 3.37 eV, respectively. PrSrCoO 4 exhibits the lower Δ G and the larger DOS, reducing the energy barrier of the OER reaction process and improving the electrocatalytic performance. − …”

Electrocatalytic C–N coupling for urea synthesis: a critical review

“…[1][2][3][4][5] By finely designing the electrocatalyst, electrochemical conversion methods can lower the energy barrier of energy-intensive processes and complete the conversions under mild conditions. [6][7][8][9] For instance, various catalysts have been introduced to facilitate electrochemical CO 2 reduction (CO 2 R). 10,11 Nowadays, CO 2 R reaction studies are able to reach industrialization requirements with an operating current density over 1 A cm −2 towards different multi-carbon products.…”

Boosting Hydrogen Adsorption via Manipulating the d-Band Center of Ferroferric Oxide for Anion Exchange Membrane-Based Seawater Electrolysis

“…Comparatively, the low-cost ferroferric oxide (Fe 3 O 4 ) is more likely to become one of the alternative substrates, and its unique octahedral structure promotes the water dissociation into H*, but it generally exhibits a lower d-band center limiting the adsorption of H* to the active site, thus hindering the occurrence of HER. , Therefore, exploring effective strategy to manipulate the d-band center of Fe 3 O 4 to promote the adsorption of H ads is desirable to enhance the HER kinetics. − For example, Qian et al significantly modulate the electronic structure of the iron active site via constructing a La–O–Fe heterogeneous interface on Fe 3 O 4 , which induces the d-band center of iron to be closer to the Fermi level, thus exhibiting moderate adsorption of reaction intermediates to enhance electrocatalytic activity . Although the above progress has been made, manipulating the d-band center of Fe 3 O 4 by a facile strategy to increase the hydrogen adsorption and simultaneously repel chloride ions on the Fe 3 O 4 surface for seawater electrolysis has been barely reported and remains challenging. − …”