Photocatalytic hydrogenation and reduction of CO2 over CuO/ TiO2 photocatalysts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39913337" target="_blank" >RIV/00216275:25310/18:39913337 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27710/18:10240280

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.apsusc.2018.05.123" target="_blank" >http://dx.doi.org/10.1016/j.apsusc.2018.05.123</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apsusc.2018.05.123" target="_blank" >10.1016/j.apsusc.2018.05.123</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photocatalytic hydrogenation and reduction of CO2 over CuO/ TiO2 photocatalysts

Popis výsledku v původním jazyce

Photocatalytic hydrogenation of carbon dioxide is one of the promising technologies which can convert carbon dioxide under ambient condition to sustainable fuels, such as methane and methanol. The pure TiO2 and copper doped TiO2 photocatalysts with 1, 3 and 5 wt.% CuO were prepared by sol-gel processing within reverse micelles and characterized by N-2 physisorption, UV-Vis, XRD, TPR, Raman spectroscopy, photoelectrochemical measurement and analysis of work function. Two types of experimental photocatalytic hydrogenation and reduction of CO2 in the liquid phase and gas phase, respectively, were carried out under hydrogen. In the case of reaction in liquid phase, the highest yield of CH4 was found in the presence 5 wt% CuO/TiO2 and pure TiO2 . Activity of photocatalysts was affected mainly by two factors: the availability of active sites (S-BET) and the work needed to move the electron from surface (work function). In gas reaction, the most CH4 and CO were generated in order: TiO2 &gt; 3 wt.% CuO/TiO2 &gt; 5 wt.% CuO/TiO2 &gt; 1 wt.% CuO/TiO2 . In the gas phase, the enhanced photocatalytic performance was connected with better separation of the generated charge carriers.

Název v anglickém jazyce

Photocatalytic hydrogenation and reduction of CO2 over CuO/ TiO2 photocatalysts

Popis výsledku anglicky

Photocatalytic hydrogenation of carbon dioxide is one of the promising technologies which can convert carbon dioxide under ambient condition to sustainable fuels, such as methane and methanol. The pure TiO2 and copper doped TiO2 photocatalysts with 1, 3 and 5 wt.% CuO were prepared by sol-gel processing within reverse micelles and characterized by N-2 physisorption, UV-Vis, XRD, TPR, Raman spectroscopy, photoelectrochemical measurement and analysis of work function. Two types of experimental photocatalytic hydrogenation and reduction of CO2 in the liquid phase and gas phase, respectively, were carried out under hydrogen. In the case of reaction in liquid phase, the highest yield of CH4 was found in the presence 5 wt% CuO/TiO2 and pure TiO2 . Activity of photocatalysts was affected mainly by two factors: the availability of active sites (S-BET) and the work needed to move the electron from surface (work function). In gas reaction, the most CH4 and CO were generated in order: TiO2 &gt; 3 wt.% CuO/TiO2 &gt; 5 wt.% CuO/TiO2 &gt; 1 wt.% CuO/TiO2 . In the gas phase, the enhanced photocatalytic performance was connected with better separation of the generated charge carriers.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

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

Návaznosti

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

Applied Surface Science

ISSN

0169-4332

e-ISSN

—

Svazek periodika

454

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

313-318

Kód UT WoS článku

000436944500036

EID výsledku v databázi Scopus

2-s2.0-85047447281