Graphitic carbon nitride: Synthesis, characterization and photocatalytic decomposition of nitrous oxide

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F17%3A10238301" target="_blank" >RIV/61989100:27360/17:10238301 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27710/17:10238301

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0254058417302122?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0254058417302122?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matchemphys.2017.03.008" target="_blank" >10.1016/j.matchemphys.2017.03.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Graphitic carbon nitride: Synthesis, characterization and photocatalytic decomposition of nitrous oxide

Popis výsledku v původním jazyce

Graphitic carbon nitride (g-C3N4) was synthetized by condensation of melamine at the temperatures of 400-700 oC in air for 2 hours and resulting products were characterized and finally tested for the photocatalytic decomposition of nitrous oxide. The characterization methods were elemental analysis, UV-Vis diffuse reflectance spectroscopy, photoluminescence, Fourier transform infrared (FTIR) and Raman spectroscopy, measurement of specific surface area, X-ray powder diffraction (XRD), scanning and transmission electron microscopy. The XRD patterns, FTIR and Raman spectra proved the presence of g-C3N4 at above 550 oC but the optimal synthesis temperature of 600-650 oC was found. Under these conditions graphitic carbon nitride of the overall empirical composition of C6N9H2 was formed. At lower temperatures g-C3N4 with a higher content of hydrogen was formed but at higher temperatures g-C3N4 was decomposed. At the temperatures above 650 oC, its exfoliation was observed. The photocatalytic experiments showed that the activity of all the samples synthetized at 400-700 oC was very similar, that is, within the range of experimental error (5 %). The total conversion of N2O reached about 43 % after 14 hours.

Název v anglickém jazyce

Graphitic carbon nitride: Synthesis, characterization and photocatalytic decomposition of nitrous oxide

Popis výsledku anglicky

Graphitic carbon nitride (g-C3N4) was synthetized by condensation of melamine at the temperatures of 400-700 oC in air for 2 hours and resulting products were characterized and finally tested for the photocatalytic decomposition of nitrous oxide. The characterization methods were elemental analysis, UV-Vis diffuse reflectance spectroscopy, photoluminescence, Fourier transform infrared (FTIR) and Raman spectroscopy, measurement of specific surface area, X-ray powder diffraction (XRD), scanning and transmission electron microscopy. The XRD patterns, FTIR and Raman spectra proved the presence of g-C3N4 at above 550 oC but the optimal synthesis temperature of 600-650 oC was found. Under these conditions graphitic carbon nitride of the overall empirical composition of C6N9H2 was formed. At lower temperatures g-C3N4 with a higher content of hydrogen was formed but at higher temperatures g-C3N4 was decomposed. At the temperatures above 650 oC, its exfoliation was observed. The photocatalytic experiments showed that the activity of all the samples synthetized at 400-700 oC was very similar, that is, within the range of experimental error (5 %). The total conversion of N2O reached about 43 % after 14 hours.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA16-10527S" target="_blank" >GA16-10527S: Nanostruktury na bázi garfitizovaného C3N4 pro fotokatalytický rozklad oxidu dusného</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Materials Chemistry and Physics

ISSN

0254-0584

e-ISSN

—

Svazek periodika

193

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

9

Strana od-do

438-446

Kód UT WoS článku

000399258400053

EID výsledku v databázi Scopus

2-s2.0-85016141528