Photocatalytic reduction of carbon dioxide over Cu/TiO2 photocatalysts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39913339" target="_blank" >RIV/00216275:25310/18:39913339 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27710/18:10240194

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s11356-017-0944-8" target="_blank" >http://dx.doi.org/10.1007/s11356-017-0944-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11356-017-0944-8" target="_blank" >10.1007/s11356-017-0944-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photocatalytic reduction of carbon dioxide over Cu/TiO2 photocatalysts

Popis výsledku v původním jazyce

The photocatalytic reduction of CO2 with H2O was investigated using Cu/TiO2 photocatalysts in aqueous solution. For this purpose, Cu/TiO2 photocatalysts (with 0.2, 0.9, 2, 4, and 6 wt.% of Cu) have been synthesized via sol-gel method. The photocatalysts were extensively characterized by means of inductively coupled plasma optical emission spectrometry (ICP-OES), N-2 physisorption (BET), XRD, UV-vis DRS, FT-IR, Raman spectroscopy, TEM-EDX, and photoelectrochemical measurements. The as-prepared photocatalysts contain anatase as a major crystalline phase with a crystallite size around 13 nm. By increasing the amount of Cu, specific surface area and band gap energy decreased in addition to the formation of large agglomeration of CuO. Results revealed that the photocatalytic reduction of CO2 decreased in the presence of Cu/TiO2 in comparison to pure TiO2, which might be associated to the formation of CuO phase acting as a recombination center of generated electron-hole pair. Decreasing of photoactivity can also be connected with a very low position of conduction band of photocatalysts with high Cu content, which makes H-2 production necessary for CO2 reduction more difficult.

Název v anglickém jazyce

Photocatalytic reduction of carbon dioxide over Cu/TiO2 photocatalysts

Popis výsledku anglicky

The photocatalytic reduction of CO2 with H2O was investigated using Cu/TiO2 photocatalysts in aqueous solution. For this purpose, Cu/TiO2 photocatalysts (with 0.2, 0.9, 2, 4, and 6 wt.% of Cu) have been synthesized via sol-gel method. The photocatalysts were extensively characterized by means of inductively coupled plasma optical emission spectrometry (ICP-OES), N-2 physisorption (BET), XRD, UV-vis DRS, FT-IR, Raman spectroscopy, TEM-EDX, and photoelectrochemical measurements. The as-prepared photocatalysts contain anatase as a major crystalline phase with a crystallite size around 13 nm. By increasing the amount of Cu, specific surface area and band gap energy decreased in addition to the formation of large agglomeration of CuO. Results revealed that the photocatalytic reduction of CO2 decreased in the presence of Cu/TiO2 in comparison to pure TiO2, which might be associated to the formation of CuO phase acting as a recombination center of generated electron-hole pair. Decreasing of photoactivity can also be connected with a very low position of conduction band of photocatalysts with high Cu content, which makes H-2 production necessary for CO2 reduction more difficult.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20701 - Environmental and geological engineering, geotechnics

Projekt

<a href="/cs/project/ED2.1.00%2F19.0388" target="_blank" >ED2.1.00/19.0388: Rozšíření a zhodnocení přístrojového vybavení IET</a><br>

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

Environmental Science and Pollution Research

ISSN

0944-1344

e-ISSN

—

Svazek periodika

25

Číslo periodika v rámci svazku

35

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

34903-34911

Kód UT WoS článku

000452024600012

EID výsledku v databázi Scopus

2-s2.0-85039549787