Titanosilicates enhance carbon dioxide photocatalytic reduction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F22%3A10444152" target="_blank" >RIV/00216208:11310/22:10444152 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27710/22:10249830

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=O3huBOa80B" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=O3huBOa80B</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apmt.2022.101392" target="_blank" >10.1016/j.apmt.2022.101392</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Titanosilicates enhance carbon dioxide photocatalytic reduction

Popis výsledku v původním jazyce

In this study, we aimed to correlate the structural properties of mesoporous zeolites with their photo catalytic performance. We prepared three types of titanosilicate zeolite photocatalysts and characterized them in detail. Titanosilicate photocatalysts showed significantly higher selectivity to CO2 reduction products, i.e., CH4 and CO, than a commercial TiO2, P25. Among them, the photocatalysts TS-1-V and Lam-TS 1, which consist of unit-cell-thick nanosheets with MFI zeolite topology, had the highest photoreduction quantum efficiency. The TPD-CO2 results showed that Lam-TS-1 and TS-1-V samples have stronger interactions with both CO2 and H2O than TS-1-C. Furthermore, the amount of CO2 chemisorbed/ desorbed on Lam-TS-1 and TS-1-V was higher, indicating a higher number of interaction sites. Therefore, the key factors in photocatalytic CO2 reduction with titanosilicate catalysts are not only the strength and number of CO2 adsorption sites but also the hydrophilicity of the photocatalysts, which strongly affects their efficiency and selectivity.

Název v anglickém jazyce

Titanosilicates enhance carbon dioxide photocatalytic reduction

Popis výsledku anglicky

In this study, we aimed to correlate the structural properties of mesoporous zeolites with their photo catalytic performance. We prepared three types of titanosilicate zeolite photocatalysts and characterized them in detail. Titanosilicate photocatalysts showed significantly higher selectivity to CO2 reduction products, i.e., CH4 and CO, than a commercial TiO2, P25. Among them, the photocatalysts TS-1-V and Lam-TS 1, which consist of unit-cell-thick nanosheets with MFI zeolite topology, had the highest photoreduction quantum efficiency. The TPD-CO2 results showed that Lam-TS-1 and TS-1-V samples have stronger interactions with both CO2 and H2O than TS-1-C. Furthermore, the amount of CO2 chemisorbed/ desorbed on Lam-TS-1 and TS-1-V was higher, indicating a higher number of interaction sites. Therefore, the key factors in photocatalytic CO2 reduction with titanosilicate catalysts are not only the strength and number of CO2 adsorption sites but also the hydrophilicity of the photocatalysts, which strongly affects their efficiency and selectivity.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Applied Materials Today [online]

ISSN

2352-9407

e-ISSN

2352-9407

Svazek periodika

26

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

101392

Kód UT WoS článku

000790303700006

EID výsledku v databázi Scopus

2-s2.0-85123629557