Effect of amines on the peroxo-titanates and photoactivity of annealed TiO2

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43933929" target="_blank" >RIV/60461373:22310/22:43933929 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/22:00554759 RIV/61388955:_____/22:00554759 RIV/61988987:17310/22:A2302DV6 RIV/44555601:13440/22:43896944

Výsledek na webu

<a href="https://arabjchem.org/effect-of-amines-on-the-peroxo-titanates-and-photoactivity-of-annealed-tio2/" target="_blank" >https://arabjchem.org/effect-of-amines-on-the-peroxo-titanates-and-photoactivity-of-annealed-tio2/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.arabjc.2022.103808" target="_blank" >10.1016/j.arabjc.2022.103808</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of amines on the peroxo-titanates and photoactivity of annealed TiO2

Popis výsledku v původním jazyce

The aim of this study was to explore the influence of various n-propylamines (mono, di, and tri) and tert-butylamine on the properties of prepared peroxo-titanates and annealed TiO2. Detailed structural characterization (SEM, TEM with EDX, XRD) confirmed the 2D-foil morphology of TiO2 nanocrystals and the CHNS analysis together with XPS showed presence of carbon (under 1 wt%). The annealed TiO2 showed excellent photocatalytic activity and up to four times higher decomposition rate constant upon UV irradiation than the P25. Favourable growth of TiO2 crystals was observed especially when propylamine and tert-butylamine were used (as precursors for the peroxo-titanates). Increased photocatalytic efficiency of the highly crystalline nano-TiO2 was confirmed due to high-reactive anatase facets and the morphology composed of microsheets formed by interconnected nanocrystals. The photoinduced electron transfer was confirmed via EPR spectroscopy. This synthesis’ procedure offers a novel preparation method of highly photoactive C-doped TiO2 achieved relatively easily after annealing of lyophilized amino-peroxo-titanate. © 2022 The Authors

Název v anglickém jazyce

Effect of amines on the peroxo-titanates and photoactivity of annealed TiO2

Popis výsledku anglicky

The aim of this study was to explore the influence of various n-propylamines (mono, di, and tri) and tert-butylamine on the properties of prepared peroxo-titanates and annealed TiO2. Detailed structural characterization (SEM, TEM with EDX, XRD) confirmed the 2D-foil morphology of TiO2 nanocrystals and the CHNS analysis together with XPS showed presence of carbon (under 1 wt%). The annealed TiO2 showed excellent photocatalytic activity and up to four times higher decomposition rate constant upon UV irradiation than the P25. Favourable growth of TiO2 crystals was observed especially when propylamine and tert-butylamine were used (as precursors for the peroxo-titanates). Increased photocatalytic efficiency of the highly crystalline nano-TiO2 was confirmed due to high-reactive anatase facets and the morphology composed of microsheets formed by interconnected nanocrystals. The photoinduced electron transfer was confirmed via EPR spectroscopy. This synthesis’ procedure offers a novel preparation method of highly photoactive C-doped TiO2 achieved relatively easily after annealing of lyophilized amino-peroxo-titanate. © 2022 The Authors

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Arabian Journal of Chemistry

ISSN

1878-5352

e-ISSN

—

Svazek periodika

15

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

17

Strana od-do

nestránkováno

Kód UT WoS článku

000779141100006

EID výsledku v databázi Scopus

2-s2.0-85125750845