Tenké mesoporézní filmy ZnO připravené elektrodepozicí jako účinné fotokatalyzátory pro degradaci polutantů barviv

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F07%3A00087868" target="_blank" >RIV/61388955:_____/07:00087868 - 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

Electrodeposited Mesoporous ZnO Thin Films as Efficient Photocatalysts for the degradation of dye pollutants

Popis výsledku v původním jazyce

Thin mesoporous films of ZnO were prepared by electrochemical deposition using eosin Y as a structure-directing agent. After removal of the eosin from the structure, transparent porous ZnO films were obtained. The porosity and surface area of these filmswere determined by performing krypton BET measurements. Electrochemical deposition parameters, such as the deposition time and the eosin concentration in the plating bath, were optimized to prepare films with large internal surface areas and good mechanical properties. Eosin concentrations of 50-60 M were found to give the best-quality mesoporous zinc oxide films with film thicknesses ranging from 2 to 3 m. The photodegradations of a heteropolyaromatic dye (methylene blue) and a diazo dye (congo red) served as model reactions to assess the photocatalytic activity of the zinc oxide films. For both dyes, the photodegradation rate reached its maximum for mesoporous films that were prepared with eosin concentrations above 40 M.

Název v anglickém jazyce

Electrodeposited Mesoporous ZnO Thin Films as Efficient Photocatalysts for the degradation of dye pollutants

Popis výsledku anglicky

Thin mesoporous films of ZnO were prepared by electrochemical deposition using eosin Y as a structure-directing agent. After removal of the eosin from the structure, transparent porous ZnO films were obtained. The porosity and surface area of these filmswere determined by performing krypton BET measurements. Electrochemical deposition parameters, such as the deposition time and the eosin concentration in the plating bath, were optimized to prepare films with large internal surface areas and good mechanical properties. Eosin concentrations of 50-60 M were found to give the best-quality mesoporous zinc oxide films with film thicknesses ranging from 2 to 3 m. The photodegradations of a heteropolyaromatic dye (methylene blue) and a diazo dye (congo red) served as model reactions to assess the photocatalytic activity of the zinc oxide films. For both dyes, the photodegradation rate reached its maximum for mesoporous films that were prepared with eosin concentrations above 40 M.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

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Svazek periodika

111

Číslo periodika v rámci svazku

21

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

7639-7644

Kód UT WoS článku

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EID výsledku v databázi Scopus

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