THERMAL EXFOLIATION FOR IMPROVING OF THE G-C3N4 PHOTODEGRADATION ACTIVITY

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F24%3A10255483" target="_blank" >RIV/61989100:27360/24:10255483 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.confer.cz/nanocon/2023/read/4789-thermal-exfoliation-for-improving-the-photodegradation-activity-of-g-c3n4.pdf" target="_blank" >https://www.confer.cz/nanocon/2023/read/4789-thermal-exfoliation-for-improving-the-photodegradation-activity-of-g-c3n4.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/nanocon.2023.4789" target="_blank" >10.37904/nanocon.2023.4789</a>

Jazyk výsledku

angličtina

Název v původním jazyce

THERMAL EXFOLIATION FOR IMPROVING OF THE G-C3N4 PHOTODEGRADATION ACTIVITY

Popis výsledku v původním jazyce

Graphitic carbon nitride is one of the most studied photocatalysts for environmental applications as well as for the production of hydrogen. Its band gap at 2.7 eV means that the photocatalytic activity of this material can be activated with the light of wavelength 460 nm and lower. Thermal polycondensation of suitable precursors, for example melamine, is a widely adopted method of bulk g-C3N4 synthesis. As prepared, bulk g-C3N4 suffers from low photodegradation activity, mainly associated with low specific surface area and high rate of electron-hole recombination. G-C3N4, similarly to graphite, has a layered structure and to increase the specific surface area, the thermal, chemical, and mechanical exfoliation methods of its layers are adopted. In this work, the effect of holding time at 525 degrees C during g-C3N4 exfoliation on its photodegradation activity against rhodamine B under irradiation with light of wavelength 420 nm is reported. The effect of holding time on the specific surface area, the structure of the resulted products, the band gap energies, and particle size was also studied. The highest value of specific surface area was achieved for sample exfoliated for 120 min, the highest photodegradation activity was achieved for sample exfoliated for 90 min.

Název v anglickém jazyce

THERMAL EXFOLIATION FOR IMPROVING OF THE G-C3N4 PHOTODEGRADATION ACTIVITY

Popis výsledku anglicky

Graphitic carbon nitride is one of the most studied photocatalysts for environmental applications as well as for the production of hydrogen. Its band gap at 2.7 eV means that the photocatalytic activity of this material can be activated with the light of wavelength 460 nm and lower. Thermal polycondensation of suitable precursors, for example melamine, is a widely adopted method of bulk g-C3N4 synthesis. As prepared, bulk g-C3N4 suffers from low photodegradation activity, mainly associated with low specific surface area and high rate of electron-hole recombination. G-C3N4, similarly to graphite, has a layered structure and to increase the specific surface area, the thermal, chemical, and mechanical exfoliation methods of its layers are adopted. In this work, the effect of holding time at 525 degrees C during g-C3N4 exfoliation on its photodegradation activity against rhodamine B under irradiation with light of wavelength 420 nm is reported. The effect of holding time on the specific surface area, the structure of the resulted products, the band gap energies, and particle size was also studied. The highest value of specific surface area was achieved for sample exfoliated for 120 min, the highest photodegradation activity was achieved for sample exfoliated for 90 min.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

NANOCON 2023 : 15th International Conference on Nanomaterials - Research &amp; Application : conference proceedings : October 18-20, 2023, OREA Congress Hotel Brno, Czech Republic, EU

ISBN

978-80-88365-15-0

ISSN

2694-930X

e-ISSN

—

Počet stran výsledku

6

Strana od-do

118-123

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

18. 10. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001234125400019