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Photo-Electrochemical Solar-to-Fuel Energy Conversion by Hematite-Based Photo-Anodes – The Role of 1D Nanostructuring
| Content Provider | Scilit |
|---|---|
| Author | Hejazi, Seyedsina Altomare, Marco Schmuki, Patrik |
| Copyright Year | 2019 |
| Abstract | Photo-electrochemical (PEC) water splitting (WS) using metal oxide semiconductors is regarded as a promising approach for the renewable production of fuels and energy vectors such as hydrogen (H2). Among metal oxide semiconductors, iron oxide in the form of hematite (α-Fe2O3) is one of the most researched photo-anode materials, mainly due to its ability to absorb photons up to 600 nm combined to a set of desirable properties such as high photocorrosion resistance, environmental friendliness, large abundance and relatively low production costs. However, hematite main disadvantages are a low electrical conductivity and a high rate of charge recombination; both these shortcomings drastically limit functionality and efficiency of hematite-based photo-anodes in PEC devices. One-dimensional (1D) nanostructuring is a powerful tool to tackle such disadvantages as it provides the photoelectrode material with increased surface area along with directional charge transport properties and short charge diffusion distances to the electrolyte – these features can improve the lifetime of photo-generated charges and/or enhance the charge transfer efficiency, and can consequently lead to a superior photo-electrochemical performance. At the same time, chemical/physical modification can also compensate natural weaknesses of hematite in water photoelectolysis. The present mini-review outlines a series of most effective strategies for the fabrication of 1D hematite nanostructures as well as for their physicochemical modification, mainly by doping or co-catalyst decoration, to achieve superior PEC activity. |
| Related Links | http://www.degruyter.com/downloadpdf/j/zpch.ahead-of-print/zpch-2019-1479/zpch-2019-1479.xml |
| Ending Page | 631 |
| Page Count | 17 |
| Starting Page | 615 |
| ISSN | 09429352 |
| e-ISSN | 21967156 |
| DOI | 10.1515/zpch-2019-1479 |
| Journal | Zeitschrift für Physikalische Chemie |
| Issue Number | 4 |
| Volume Number | 234 |
| Language | English |
| Publisher | Walter de Gruyter GmbH |
| Publisher Date | 2020-04-28 |
| Access Restriction | Open |
| Subject Keyword | Zeitschrift Für Physikalische Chemie Inorganic Chemistry Hematite Photoanode Photoelectrochemistry Semiconductors Journal: Zeitschrift für Physikalische Chemie, Issue- 2 |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical and Theoretical Chemistry |
