Photocatalytic CO2 reduction over TiO2/rGO photocatalysts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F22%3A10251060" target="_blank" >RIV/61989100:27710/22:10251060 - isvavai.cz</a>

Výsledek na webu

<a href="https://photoiupac2022.amsterdam/" target="_blank" >https://photoiupac2022.amsterdam/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Photocatalytic CO2 reduction over TiO2/rGO photocatalysts

Popis výsledku v původním jazyce

Abstrakt z konference 28th IUPAC Symposium on Photochemistry, která se konala ve dnech 17. - 22. 7. 2022 v AmsterdamuIn this work, a conversion of carbon dioxide (CO2) into methane, carbon monoxide as well as hydrogen was investigated in presence of TiO2/rGO photocatalysts. Photocatalysts were prepared in two-steps: solvothermal method and calcination at 500, 800 and 1000 oC in argon atmosphere. The obtained samples were characterized by XRD, UV-Vis/DRS, N2 adsorption-desorption and analysis of carbon content. The activity of photocatalysts was evaluated in the reduction of CO2. The TiO2/rGO-10 without calcination showed the highest activity toward CO2 conversion while all rGO modified samples exhibited higher activity and selectivity toward H2 generation in comparison with starting-TiO2 as well as reference materials. It should be pointed that the highest selectivity of H2 production was achieved by samples consisting of rutile. Moreover, it was found that selected photocatalyst after rGO modification and calcination was quite stable. The enhancement of activity was attributed to the efficient charge separation and prolonged recombination time of charge carriers resulting from rGO content.

Název v anglickém jazyce

Photocatalytic CO2 reduction over TiO2/rGO photocatalysts

Popis výsledku anglicky

Abstrakt z konference 28th IUPAC Symposium on Photochemistry, která se konala ve dnech 17. - 22. 7. 2022 v AmsterdamuIn this work, a conversion of carbon dioxide (CO2) into methane, carbon monoxide as well as hydrogen was investigated in presence of TiO2/rGO photocatalysts. Photocatalysts were prepared in two-steps: solvothermal method and calcination at 500, 800 and 1000 oC in argon atmosphere. The obtained samples were characterized by XRD, UV-Vis/DRS, N2 adsorption-desorption and analysis of carbon content. The activity of photocatalysts was evaluated in the reduction of CO2. The TiO2/rGO-10 without calcination showed the highest activity toward CO2 conversion while all rGO modified samples exhibited higher activity and selectivity toward H2 generation in comparison with starting-TiO2 as well as reference materials. It should be pointed that the highest selectivity of H2 production was achieved by samples consisting of rutile. Moreover, it was found that selected photocatalyst after rGO modification and calcination was quite stable. The enhancement of activity was attributed to the efficient charge separation and prolonged recombination time of charge carriers resulting from rGO content.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/LM2018098" target="_blank" >LM2018098: Energetické využití odpadů a čištění plynů</a><br>

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