ACTIVATION OF TAS2 LOADED IN BLACK TITANIA NANOTUBE ARRAYS - HIGH PERFORMANCE PHOTOELECTROCHEMICAL CATHODE FOR HYDROGEN PRODUCTION

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F24%3A43929306" target="_blank" >RIV/60461373:22310/24:43929306 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.37904/nanocon.2023.4786" target="_blank" >https://doi.org/10.37904/nanocon.2023.4786</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/nanocon.2023.4786" target="_blank" >10.37904/nanocon.2023.4786</a>

Jazyk výsledku

angličtina

Název v původním jazyce

ACTIVATION OF TAS2 LOADED IN BLACK TITANIA NANOTUBE ARRAYS - HIGH PERFORMANCE PHOTOELECTROCHEMICAL CATHODE FOR HYDROGEN PRODUCTION

Popis výsledku v původním jazyce

The shift towards sustainable energy sources has generated a growing need for materials that can effectively produce and conserve alternative fuels. While platinum is known for its outstanding catalytic properties in hydrogen evolution, its scarcity presents a significant challenge. This work focuses on developing an electrode for the photoelectrochemical production of hydrogen without Pt utilization, a potential future fuel source. In particular, we introduced a novel electrode preparation method that utilizes more abundant materials, including titanium (Ti), tantalum pentoxide (Ta2O5), and gold (Au). The proposed approach begins with titanium anodization to create a TiO2 nanotube array, followed by partial reduction to create a black titania structure, resulting in a high surface area with excellent light absorption. A nanostructured gold was deposited on the top of black titania and enhances light absorption, enabling the efficient use of hot electrons excited due to surface plasmon resonance. Simultaneously, controlled sulfurization of Ta2O5 yields TaS2 with a preferential structural modification (3R) which is later deposited on black titania/Au surface and enhances the catalytic activity of such samples. The synergistic combination of used materials, deliberate introduction of structural defects, and spatial compatibility leads to an electrode that surpasses platinum&apos;s overpotential for hydrogen evolution at high current densities. Moreover, under illumination, the prepared electrode outperforms platinum even at low current densities as low as 10 mA cm-2. This innovative approach holds promise for advancing sustainable hydrogen production and contributes to the ongoing efforts to develop alternative energy sources. © 2024 NANOCON Conference Proceedings - International Conference on Nanomaterials. All rights reserved.

Název v anglickém jazyce

ACTIVATION OF TAS2 LOADED IN BLACK TITANIA NANOTUBE ARRAYS - HIGH PERFORMANCE PHOTOELECTROCHEMICAL CATHODE FOR HYDROGEN PRODUCTION

Popis výsledku anglicky

The shift towards sustainable energy sources has generated a growing need for materials that can effectively produce and conserve alternative fuels. While platinum is known for its outstanding catalytic properties in hydrogen evolution, its scarcity presents a significant challenge. This work focuses on developing an electrode for the photoelectrochemical production of hydrogen without Pt utilization, a potential future fuel source. In particular, we introduced a novel electrode preparation method that utilizes more abundant materials, including titanium (Ti), tantalum pentoxide (Ta2O5), and gold (Au). The proposed approach begins with titanium anodization to create a TiO2 nanotube array, followed by partial reduction to create a black titania structure, resulting in a high surface area with excellent light absorption. A nanostructured gold was deposited on the top of black titania and enhances light absorption, enabling the efficient use of hot electrons excited due to surface plasmon resonance. Simultaneously, controlled sulfurization of Ta2O5 yields TaS2 with a preferential structural modification (3R) which is later deposited on black titania/Au surface and enhances the catalytic activity of such samples. The synergistic combination of used materials, deliberate introduction of structural defects, and spatial compatibility leads to an electrode that surpasses platinum&apos;s overpotential for hydrogen evolution at high current densities. Moreover, under illumination, the prepared electrode outperforms platinum even at low current densities as low as 10 mA cm-2. This innovative approach holds promise for advancing sustainable hydrogen production and contributes to the ongoing efforts to develop alternative energy sources. © 2024 NANOCON Conference Proceedings - International Conference on Nanomaterials. All rights reserved.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA23-05197S" target="_blank" >GA23-05197S: Dvourozměrné dichalkogenidy přechodných kovů – nový koncept syntézy a aktivace pro zvýšení funkčnosti</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

NANOCON Conference Proceedings

ISBN

978-80-88365-15-0

ISSN

2694-930X

e-ISSN

—

Počet stran výsledku

6

Strana od-do

142-147

Název nakladatele

Tanger s.r.o.

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

18. 10. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001234125400023