Photocatalytic decomposition of N2O over g-C3N4/WO3 photocatalysts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F18%3A10240278" target="_blank" >RIV/61989100:27360/18:10240278 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27710/18:10240278 RIV/61989100:27740/18:10240278 RIV/61989100:27360/17:10237648 RIV/61989100:27710/17:10237648

Výsledek na webu

<a href="https://link.springer.com/article/10.1007%2Fs11356-017-0723-6" target="_blank" >https://link.springer.com/article/10.1007%2Fs11356-017-0723-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11356-017-0723-6" target="_blank" >10.1007/s11356-017-0723-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photocatalytic decomposition of N2O over g-C3N4/WO3 photocatalysts

Popis výsledku v původním jazyce

Although the nitrous oxide belongs among three of the most contributing greenhouse gases to global warming, it is quite neglected by photocatalytic society. The g-C3N4 and WO3 composites were therefore tested for the photocatalytic decomposition of N2O for the first time. The pure photocatalysts were prepared by simple calcination of precursors, and the composites were prepared by mixing of suspension of pure components in water followed by calcination. The structural (X-ray diffraction, X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy), textural (N-2 physisorption), and optical properties (diffuse reflectance spectroscopy, photoluminescence spectroscopy, photoelectrochemical measurements) of all composites were correlated with photocatalytic activity. The experimental results and results from characterization techniques confirmed creation of Z-scheme in the WO3/g-C3N4 composites, which was confirmed by hydroxyl radicals&apos; trapping measurements. The photocatalytic decomposition of N2O was carried out in the presence of UVA light (peak intensity at 365nm) and the 1:2 WO3/g-C3N4 composite was the most active one, but the photocatalytic activity was just negligibly higher than that of pure WO3. This is caused by relatively weak interaction between WO3 and g-C3N4 which was revealed from XPS.

Název v anglickém jazyce

Photocatalytic decomposition of N2O over g-C3N4/WO3 photocatalysts

Popis výsledku anglicky

Although the nitrous oxide belongs among three of the most contributing greenhouse gases to global warming, it is quite neglected by photocatalytic society. The g-C3N4 and WO3 composites were therefore tested for the photocatalytic decomposition of N2O for the first time. The pure photocatalysts were prepared by simple calcination of precursors, and the composites were prepared by mixing of suspension of pure components in water followed by calcination. The structural (X-ray diffraction, X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy), textural (N-2 physisorption), and optical properties (diffuse reflectance spectroscopy, photoluminescence spectroscopy, photoelectrochemical measurements) of all composites were correlated with photocatalytic activity. The experimental results and results from characterization techniques confirmed creation of Z-scheme in the WO3/g-C3N4 composites, which was confirmed by hydroxyl radicals&apos; trapping measurements. The photocatalytic decomposition of N2O was carried out in the presence of UVA light (peak intensity at 365nm) and the 1:2 WO3/g-C3N4 composite was the most active one, but the photocatalytic activity was just negligibly higher than that of pure WO3. This is caused by relatively weak interaction between WO3 and g-C3N4 which was revealed from XPS.

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

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

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

34839-34850

Kód UT WoS článku

000452024600006

EID výsledku v databázi Scopus

2-s2.0-85035147502