A Blinking Mesoporous TiO(2-x)Composed of Nanosized Anatase with Unusually Long-Lived Trapped Charge Carriers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F20%3A00532376" target="_blank" >RIV/68081731:_____/20:00532376 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.202005143" target="_blank" >https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.202005143</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/anie.202005143" target="_blank" >10.1002/anie.202005143</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A Blinking Mesoporous TiO(2-x)Composed of Nanosized Anatase with Unusually Long-Lived Trapped Charge Carriers

Popis výsledku v původním jazyce

A mesoporous TiO(2-x)material comprised of small, crystalline, vacancy-rich anatase nanoparticles (NPs) shows unique optical, thermal, and electronic properties. It is synthesized using polymer-derived mesoporous carbon (PDMC) as a template. The PDMC pores serve as physical barriers during the condensation and pyrolysis of a titania precursor, preventing the titania NPs from growing beyond 10 nm in size. Unlike most titania nanomaterials, during pyrolysis the NPs undergo no transition from the anatase to rutile phase and they become catalytically active reduced TiO2-x. When exposed to a slow electron beam, the NPs exhibit a charge/discharge behavior, lighting up and fading away for an average period of 15 s for an extended period of time. The NPs also show a 50 nm red-shift in their UV/Vis absorption and long-lived charge carriers (electrons and holes) at room temperature in the dark, even long after UV irradiation. The NPs as photocatalysts show a good activity for CO(2)reduction.

Název v anglickém jazyce

A Blinking Mesoporous TiO(2-x)Composed of Nanosized Anatase with Unusually Long-Lived Trapped Charge Carriers

Popis výsledku anglicky

A mesoporous TiO(2-x)material comprised of small, crystalline, vacancy-rich anatase nanoparticles (NPs) shows unique optical, thermal, and electronic properties. It is synthesized using polymer-derived mesoporous carbon (PDMC) as a template. The PDMC pores serve as physical barriers during the condensation and pyrolysis of a titania precursor, preventing the titania NPs from growing beyond 10 nm in size. Unlike most titania nanomaterials, during pyrolysis the NPs undergo no transition from the anatase to rutile phase and they become catalytically active reduced TiO2-x. When exposed to a slow electron beam, the NPs exhibit a charge/discharge behavior, lighting up and fading away for an average period of 15 s for an extended period of time. The NPs also show a 50 nm red-shift in their UV/Vis absorption and long-lived charge carriers (electrons and holes) at room temperature in the dark, even long after UV irradiation. The NPs as photocatalysts show a good activity for CO(2)reduction.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Angewandte Chemie - International Edition

ISSN

1433-7851

e-ISSN

—

Svazek periodika

59

Číslo periodika v rámci svazku

35

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

7

Strana od-do

15000-15007

Kód UT WoS článku

000540503500001

EID výsledku v databázi Scopus

2-s2.0-85089607167