Influence of Particle Size on Electrophotocatalytic Properties of Tungsten Trioxide Photoanodes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F24%3APU152199" target="_blank" >RIV/00216305:26310/24:PU152199 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.researchgate.net/publication/382840581_Influence_of_Particle_Size_on_Electrophotocatalytic_Properties_of_Tungsten_Trioxide_Photoanodes#full-text" target="_blank" >https://www.researchgate.net/publication/382840581_Influence_of_Particle_Size_on_Electrophotocatalytic_Properties_of_Tungsten_Trioxide_Photoanodes#full-text</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1149/1945-7111/ad6a8e" target="_blank" >10.1149/1945-7111/ad6a8e</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of Particle Size on Electrophotocatalytic Properties of Tungsten Trioxide Photoanodes

Popis výsledku v původním jazyce

The need for advanced wastewater treatment technologies has been highlighted by the widespread contamination of water sources with toxic and persistent organic chemicals. In this work, thin films of tungsten (VI) oxide (WO3) were prepared by spin-coating and Meyer rod coating nanoparticulate dispersions following a top-down approach through ball milling. The morphological properties of the layers were investigated by profilometry. The results showed that the surface area increased with an increase in milling time for the milled mixture, and, for the sample milled for 96 h, it showed a nine-fold increase compared to the commercial tungsten (VI) oxide powder. The electron microscopic images provided insight into the change in particle size and layer texture which comply with the morphological changes observed by profilometry. The influence of the particle size on the charge generation efficiency was investigated using photoanodes prepared from the studied suspensions. Two distinct formulations of different particle sizes were mixed in variable ratios, and we showed that multimodal coatings exhibit larger photocurrents than monomodal coatings. The main contribution of this work can be found in the economically inexpensive method of preparing thin films WO3.

Název v anglickém jazyce

Influence of Particle Size on Electrophotocatalytic Properties of Tungsten Trioxide Photoanodes

Popis výsledku anglicky

The need for advanced wastewater treatment technologies has been highlighted by the widespread contamination of water sources with toxic and persistent organic chemicals. In this work, thin films of tungsten (VI) oxide (WO3) were prepared by spin-coating and Meyer rod coating nanoparticulate dispersions following a top-down approach through ball milling. The morphological properties of the layers were investigated by profilometry. The results showed that the surface area increased with an increase in milling time for the milled mixture, and, for the sample milled for 96 h, it showed a nine-fold increase compared to the commercial tungsten (VI) oxide powder. The electron microscopic images provided insight into the change in particle size and layer texture which comply with the morphological changes observed by profilometry. The influence of the particle size on the charge generation efficiency was investigated using photoanodes prepared from the studied suspensions. Two distinct formulations of different particle sizes were mixed in variable ratios, and we showed that multimodal coatings exhibit larger photocurrents than monomodal coatings. The main contribution of this work can be found in the economically inexpensive method of preparing thin films WO3.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

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

Projekt

<a href="/cs/project/TH03030197" target="_blank" >TH03030197: Tištěný flexibilní elektrofotokatalytický systém na bázi organokřemičitých pojiv pro likvidaci organických polutantů</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

JOURNAL OF THE ELECTROCHEMICAL SOCIETY

ISSN

0013-4651

e-ISSN

1945-7111

Svazek periodika

171

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

„“-„“

Kód UT WoS článku

001294053900001

EID výsledku v databázi Scopus

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