Improvement of the photocatalytic performance of ZnO thin films in the UV and sunlight range by Cu doping and additional coupling with Cu2O

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F22%3A00125869" target="_blank" >RIV/00216224:14310/22:00125869 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.researchgate.net/publication/358065575_Improvement_of_the_photocatalytic_performance_of_ZnO_thin_films_in_the_UV_and_sunlight_range_by_Cu_doping_and_additional_coupling_with_Cu2O" target="_blank" >https://www.researchgate.net/publication/358065575_Improvement_of_the_photocatalytic_performance_of_ZnO_thin_films_in_the_UV_and_sunlight_range_by_Cu_doping_and_additional_coupling_with_Cu2O</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2022.01.207" target="_blank" >10.1016/j.ceramint.2022.01.207</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Improvement of the photocatalytic performance of ZnO thin films in the UV and sunlight range by Cu doping and additional coupling with Cu2O

Popis výsledku v původním jazyce

Thin films of ZnO, Cu-doped ZnO, Cu2O and binary Cu2O/Cu-doped ZnO p-n heterojunction thin film were prepared and tested for their heterogeneous photocatalytic activity in the removal of three selected organic dyes: methylene blue (MB), methylene orange (MO) and Congo red (CR). The photocatalytic experiments were carried out under UV light and natural sunlight. The synthesis of the thin film photocatalysts was carried out by an electrochemical deposition method and the resulting films were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), UV-Vis spectroscopy, electrochemical impedance spectroscopy and capacitance measurements (i.e., Mott-Schottky plots). Under UV illumination, the results showed that the photocatalytic degradation activity is of first-order kinetics and the lifetime of the photogenerated electron-hole pairs of ZnO is increased by the Cu doping. The combination of Cu-doped ZnO and Cu2O allows the construction of a p-n heterojunction that enhances the photocatalytic process, as demonstrated for the photocatalytic degradation of dyes under sunlight irradiation.

Název v anglickém jazyce

Improvement of the photocatalytic performance of ZnO thin films in the UV and sunlight range by Cu doping and additional coupling with Cu2O

Popis výsledku anglicky

Thin films of ZnO, Cu-doped ZnO, Cu2O and binary Cu2O/Cu-doped ZnO p-n heterojunction thin film were prepared and tested for their heterogeneous photocatalytic activity in the removal of three selected organic dyes: methylene blue (MB), methylene orange (MO) and Congo red (CR). The photocatalytic experiments were carried out under UV light and natural sunlight. The synthesis of the thin film photocatalysts was carried out by an electrochemical deposition method and the resulting films were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), UV-Vis spectroscopy, electrochemical impedance spectroscopy and capacitance measurements (i.e., Mott-Schottky plots). Under UV illumination, the results showed that the photocatalytic degradation activity is of first-order kinetics and the lifetime of the photogenerated electron-hole pairs of ZnO is increased by the Cu doping. The combination of Cu-doped ZnO and Cu2O allows the construction of a p-n heterojunction that enhances the photocatalytic process, as demonstrated for the photocatalytic degradation of dyes under sunlight irradiation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Ceramics International

ISSN

0272-8842

e-ISSN

1873-3956

Svazek periodika

48

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

13283-13294

Kód UT WoS článku

000784446000002

EID výsledku v databázi Scopus

2-s2.0-85123689062