English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Solar driven photoelectrochemical water splitting (PEC-WS) usingsemiconductor photoelectrodes represents a promising approach for a sustainableand environmentally friendly production of renewable energy vectors and fuelsources, such as dihydrogen (H2). In this context, titanium dioxide (TiO$_2$)and iron oxide (hematite, $\alpha$-Fe$_2$O$_3$) are among the most investigatedcandidates as photoanode materials, mainly owing to their resistance tophotocorrosion, non-toxicity, natural abundance, and low production cost. Majordrawbacks are, however, an inherently low electrical conductivity and a limitedhole diffusion length that significantly affect the performance of TiO$_2$ and$\alpha$-Fe$_2$O$_3$ in PEC devices. To this regard, one-dimensional (1D)nanostructuring is typically applied as it provides several superior featuressuch as a significant enlargement of the material surface area, extendedcontact between the semiconductor and the electrolyte and, most remarkably,preferential electrical transport that overall suppress charge carrierrecombination and improve TiO$_2$ and $\alpha$-Fe$_2$O$_3$photo-electrocatalytic properties. The present review describes varioussynthetic methods, properties and PEC applications of 1D-photoanodes(nanotubes, nanorods, nanofibers, nanowires) based on titania, hematite, and on$\alpha$-Fe$_2$O$_3$/TiO$_2$ heterostructures. Various routes towardsmodification and enhancement of PEC activity of 1D photoanodes are alsodiscussed including doping, decoration with co-catalysts and heterojunctionengineering. Finally, the challenges related to the optimization of chargetransfer kinetics in both oxides are highlighted.

chemical society reviews

Photoanodes Based on TiO$_2$ and $\alpha$-Fe$_2$O$_3$ for Solar Water  Splitting Superior Role of 1D Nanoarchitectures and of Combined  Heterostructures