Photoanodes based on TiO2 and alpha-Fe2O3 for solar water splitting - superior role of 1D nanoarchitectures and of combined heterostructures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73583120" target="_blank" >RIV/61989592:15310/17:73583120 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/17:43914980

Výsledek na webu

<a href="http://pubs.rsc.org/en/content/articlehtml/2017/cs/c6cs00015k" target="_blank" >http://pubs.rsc.org/en/content/articlehtml/2017/cs/c6cs00015k</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c6cs00015k" target="_blank" >10.1039/c6cs00015k</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photoanodes based on TiO2 and alpha-Fe2O3 for solar water splitting - superior role of 1D nanoarchitectures and of combined heterostructures

Popis výsledku v původním jazyce

Solar driven photoelectrochemical water splitting (PEC-WS) using semiconductor photoelectrodes represents a promising approach for a sustainable and environmentally friendly production of renewable energy vectors and fuel sources, such as dihydrogen (H-2). In this context, titanium dioxide (TiO2) and iron oxide (hematite, alpha-Fe2O3) are among the most investigated candidates as photoanode materials, mainly owing to their resistance to photocorrosion, non-toxicity, natural abundance, and low production cost. Major drawbacks are, however, an inherently low electrical conductivity and a limited hole diffusion length that significantly affect the performance of TiO2 and alpha-Fe2O3 in PEC devices. To this regard, one-dimensional (1D) nanostructuring is typically applied as it provides several superior features such as a significant enlargement of the material surface area, extended contact between the semiconductor and the electrolyte and, most remarkably, preferential electrical transport that overall suppress charge carrier recombination and improve TiO2 and alpha-Fe2O3 photoelectrocatalytic properties. The present review describes various synthetic methods and modifying concepts of 1D-photoanodes (nanotubes, nanorods, nanofibers, nanowires) based on titania, hematite, and on alpha-Fe2O3/TiO2 heterostructures, for PEC applications. Various routes towards modification and enhancement of PEC activity of 1D photoanodes are discussed including doping, decoration with co-catalysts and heterojunction engineering. Finally, the challenges related to the optimization of charge transfer kinetics in both oxides are highlighted.

Název v anglickém jazyce

Photoanodes based on TiO2 and alpha-Fe2O3 for solar water splitting - superior role of 1D nanoarchitectures and of combined heterostructures

Popis výsledku anglicky

Solar driven photoelectrochemical water splitting (PEC-WS) using semiconductor photoelectrodes represents a promising approach for a sustainable and environmentally friendly production of renewable energy vectors and fuel sources, such as dihydrogen (H-2). In this context, titanium dioxide (TiO2) and iron oxide (hematite, alpha-Fe2O3) are among the most investigated candidates as photoanode materials, mainly owing to their resistance to photocorrosion, non-toxicity, natural abundance, and low production cost. Major drawbacks are, however, an inherently low electrical conductivity and a limited hole diffusion length that significantly affect the performance of TiO2 and alpha-Fe2O3 in PEC devices. To this regard, one-dimensional (1D) nanostructuring is typically applied as it provides several superior features such as a significant enlargement of the material surface area, extended contact between the semiconductor and the electrolyte and, most remarkably, preferential electrical transport that overall suppress charge carrier recombination and improve TiO2 and alpha-Fe2O3 photoelectrocatalytic properties. The present review describes various synthetic methods and modifying concepts of 1D-photoanodes (nanotubes, nanorods, nanofibers, nanowires) based on titania, hematite, and on alpha-Fe2O3/TiO2 heterostructures, for PEC applications. Various routes towards modification and enhancement of PEC activity of 1D photoanodes are discussed including doping, decoration with co-catalysts and heterojunction engineering. Finally, the challenges related to the optimization of charge transfer kinetics in both oxides are highlighted.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chemical Society Reviews

ISSN

0306-0012

e-ISSN

—

Svazek periodika

46

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

54

Strana od-do

3716-3769

Kód UT WoS článku

000403555500006

EID výsledku v databázi Scopus

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