MoSexOy-Coated 1D TiO2 Nanotube Layers: Efficient Interface for Light-Driven Applications

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10378999" target="_blank" >RIV/00216208:11320/18:10378999 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216275:25310/17:39911319

Výsledek na webu

<a href="https://doi.org/10.1002/admi.201701146" target="_blank" >https://doi.org/10.1002/admi.201701146</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/admi.201701146" target="_blank" >10.1002/admi.201701146</a>

Jazyk výsledku

angličtina

Název v původním jazyce

MoSexOy-Coated 1D TiO2 Nanotube Layers: Efficient Interface for Light-Driven Applications

Popis výsledku v původním jazyce

Ultrathin molybdenum oxyselenide (MoSexOy) coatings are made first ever by atomic layer deposition (ALD) within anodic 1D TiO2 nanotube layers for photoelectrochemical and photocatalytic applications. The coating thickness is controlled through varying ALD cycles from 5 to 50 cycles (corresponding to approximate to 1-10 nm). In the ultraviolet region, the coatings have enhanced up to four times the incident photon-to-current conversion efficiency (IPCE), and the highest IPCE is recorded at 32% at (at lambda = 365 nm). The coatings notably extend the photoresponse to the visible spectral region and remarkable improvement of photocurrent densities up to approximate to 40 times is registered at lambda = 470 nm. As a result, the MoSexOy-coated-TiO2 nanotube layers have shown to be an effective photocatalyst for methylene blue degradation, and the optimal performance is credited to a coating thickness between 2 and 5 nm (feasible only by ALD). The enhancement in photoactivities of the presented heterojunction is mainly associated with the passivation effect of MoSexOy on the TiO2 nanotube walls and the suitability of bandgap position between MoSexOy and TiO2 interface for an efficient charge transfer. In addition, MoSexOy possesses a narrow bandgap, which favors the photo-activity in the visible spectral region.

Název v anglickém jazyce

MoSexOy-Coated 1D TiO2 Nanotube Layers: Efficient Interface for Light-Driven Applications

Popis výsledku anglicky

Ultrathin molybdenum oxyselenide (MoSexOy) coatings are made first ever by atomic layer deposition (ALD) within anodic 1D TiO2 nanotube layers for photoelectrochemical and photocatalytic applications. The coating thickness is controlled through varying ALD cycles from 5 to 50 cycles (corresponding to approximate to 1-10 nm). In the ultraviolet region, the coatings have enhanced up to four times the incident photon-to-current conversion efficiency (IPCE), and the highest IPCE is recorded at 32% at (at lambda = 365 nm). The coatings notably extend the photoresponse to the visible spectral region and remarkable improvement of photocurrent densities up to approximate to 40 times is registered at lambda = 470 nm. As a result, the MoSexOy-coated-TiO2 nanotube layers have shown to be an effective photocatalyst for methylene blue degradation, and the optimal performance is credited to a coating thickness between 2 and 5 nm (feasible only by ALD). The enhancement in photoactivities of the presented heterojunction is mainly associated with the passivation effect of MoSexOy on the TiO2 nanotube walls and the suitability of bandgap position between MoSexOy and TiO2 interface for an efficient charge transfer. In addition, MoSexOy possesses a narrow bandgap, which favors the photo-activity in the visible spectral region.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Advanced Materials Interfaces

ISSN

2196-7350

e-ISSN

—

Svazek periodika

5

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

8

Strana od-do

—

Kód UT WoS článku

000424210700014

EID výsledku v databázi Scopus

2-s2.0-85036572047