The quest for sustainable energy solutions prominently features the exploration of renewable energy resources due to the diminishing reserves of fossil fuels and their detrimental environmental impact. Crucially, the economic viability of novel technologies for energy production pivots on the cost-efficiency of associated catalysts. Recent explorations have emphasized the potential of cost-effective photoelectrocatalysts such as hematite, BiVO4, Cu2O, TiO2, Fe2TiO5, and Sb2S3, often enhanced with dopants or cocatalysts like Co3O4, NiFeOx, and MoS2. These materials optimize redox reactions at the solid/liquid interface facilitated by photoelectrocatalysis, resulting in improved separation and collection of redox products and reduced electron-hole recombination.

This Research Topic aims to spotlight advancements in developing low-cost photoelectrocatalyst materials and methodologies that bolster sustainable energy production. Key focal points include photoelectrocatalytic hydrogen production, CO2 photoreduction, and biomass photoreforming, which are pivotal for producing value-added chemicals and fuels effectively.

To encourage further exploration within this domain, the scope of this topic is rigorously defined. We are primarily interested in contributions that push the boundaries of cost reduction in material and methodological development. In line with this, we welcome submissions addressing, but not limited to, the following themes:

• Synthesis techniques for economical transition-metal based electrocatalysts and photocatalysts;
• Innovations in recycling photoelectrocatalyst materials;
• Photoelectrocatalysis applications in solar fuel generation, including hydrogen production and CO2 reduction;
• Advanced approaches to electrocatalytic water splitting.

This research initiative aims to compile an array of scientific investigations, reviews, and perspectives that collectively advance our understanding and implementation of low-cost photoelectrocatalysts in renewable energy production.

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Frontiers in Fuels

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