TiO2-based Nanocolumn Arrays for Photoelectrochemical Water Splitting: Electrochemical Characterization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F16%3APU121086" target="_blank" >RIV/00216305:26620/16:PU121086 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

TiO2-based Nanocolumn Arrays for Photoelectrochemical Water Splitting: Electrochemical Characterization

Popis výsledku v původním jazyce

Titanium dioxide is a widely investigated material for numerous applications, including photoelectrochemical (PEC) water splitting as the way to utilize solar energy for hydrogen production. Nanostructuring of TiO2, in the form of nanocolumn arrays, may lead to substantial improvements of the PEC performance owing to an increase in the surface-to-volume ratio combined with shorter charge transport pathways. On the other hand, too small nanostructures may reside in flat-band condition, having no depletion layer crucial for effective charge carrier separation. Thus, an adjusted size of the nanocolumns having a depletion layer of optimum thickness, occupying a big portion of the column itself, may lead to charge separation taking place in a substantial portion of the nanocolumn volume, increasing the PEC response. Therefore, in this work, we study various types of morphology, crystallinity, oxygen vacancy concentration, and doping level in the TiO2 nanocolumn arrays in order to achieve a depletion layer

Název v anglickém jazyce

TiO2-based Nanocolumn Arrays for Photoelectrochemical Water Splitting: Electrochemical Characterization

Popis výsledku anglicky

Titanium dioxide is a widely investigated material for numerous applications, including photoelectrochemical (PEC) water splitting as the way to utilize solar energy for hydrogen production. Nanostructuring of TiO2, in the form of nanocolumn arrays, may lead to substantial improvements of the PEC performance owing to an increase in the surface-to-volume ratio combined with shorter charge transport pathways. On the other hand, too small nanostructures may reside in flat-band condition, having no depletion layer crucial for effective charge carrier separation. Thus, an adjusted size of the nanocolumns having a depletion layer of optimum thickness, occupying a big portion of the column itself, may lead to charge separation taking place in a substantial portion of the nanocolumn volume, increasing the PEC response. Therefore, in this work, we study various types of morphology, crystallinity, oxygen vacancy concentration, and doping level in the TiO2 nanocolumn arrays in order to achieve a depletion layer

Druh

O - Ostatní výsledky

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

<a href="/cs/project/GJ15-23005Y" target="_blank" >GJ15-23005Y: Vytváření a vlastnosti polí nanosloupků založených na TiO2 za využití anodické oxidace dopovaných vrstev titanu pomocí porézní aluminy</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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