Hydrogen sensing capabilities of highly nanoporous black gold films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00585975" target="_blank" >RIV/68378271:_____/24:00585975 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22340/23:43928272 RIV/00216208:11320/24:10491830

Výsledek na webu

<a href="https://doi.org/10.1016/j.apsusc.2023.158618" target="_blank" >https://doi.org/10.1016/j.apsusc.2023.158618</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apsusc.2023.158618" target="_blank" >10.1016/j.apsusc.2023.158618</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydrogen sensing capabilities of highly nanoporous black gold films

Popis výsledku v původním jazyce

Hydrogen sensing is a crucial topic regarding the green deal and the use of hydrogen as a next-generation energy source/energy-storage medium. Chemiresistive nanostructured materials can provide a large surface area for hydrogen adsorption. We present a detailed study of the hydrogen sensing capabilities of highly nanoporous black gold films that show fast response and recovery times (0.5 min) while operating at low temperatures (40◦ C). The films with different levels of nanoporosity were prepared and tested to a hydrogen concentration in the range of 0.25–0.95 %. Film properties were characterized by AFM, SEM, XPS and Variable Energy Positron Annihilation Spectroscopy. We found that nanoporous black gold is suitable as an active layer of chemiresistor for hydrogen sensing and that its sensitivity is the function of the film nanoporosity. Possible mechanisms of hydrogen-gold interactions are discussed.

Název v anglickém jazyce

Hydrogen sensing capabilities of highly nanoporous black gold films

Popis výsledku anglicky

Hydrogen sensing is a crucial topic regarding the green deal and the use of hydrogen as a next-generation energy source/energy-storage medium. Chemiresistive nanostructured materials can provide a large surface area for hydrogen adsorption. We present a detailed study of the hydrogen sensing capabilities of highly nanoporous black gold films that show fast response and recovery times (0.5 min) while operating at low temperatures (40◦ C). The films with different levels of nanoporosity were prepared and tested to a hydrogen concentration in the range of 0.25–0.95 %. Film properties were characterized by AFM, SEM, XPS and Variable Energy Positron Annihilation Spectroscopy. We found that nanoporous black gold is suitable as an active layer of chemiresistor for hydrogen sensing and that its sensitivity is the function of the film nanoporosity. Possible mechanisms of hydrogen-gold interactions are discussed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/GA23-05002S" target="_blank" >GA23-05002S: Černé kovy povrchově dekorované MXeny jako citlivé vrstvy chemirezistorů</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 periodika

Applied Surface Science

ISSN

0169-4332

e-ISSN

1873-5584

Svazek periodika

647

Číslo periodika v rámci svazku

Feb

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

158618

Kód UT WoS článku

001127440000001

EID výsledku v databázi Scopus

2-s2.0-85178020283