Exfoliated Nanosheets of Graphitic Carbon Nitride: Study of Optical and Photoectrochemical Properties

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F17%3A86100571" target="_blank" >RIV/61989100:27360/17:86100571 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27710/17:86100571
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Exfoliated Nanosheets of Graphitic Carbon Nitride: Study of Optical and Photoectrochemical Properties
Original language description
The graphitic carbon nitride (g-C3N4) samples were prepared by the three different methods: (i) heating of melamine at 600 ºC (bulk g-C3N4), (ii) exfoliation of bulk g-C3N4 by heating at 500 ºC (Ex500) and (iii) exfoliation of bulk g-C3N4 by ultrasonication in an aqueous dispersion (ExUltra). The exfoliation was performed to obtain g-C3N4 nanosheets or other nanostructures. The samples characterization was performed by UV-Vis diffuse reflectance (DRS UV-Vis), photoluminescence (PL) spectroscopy and photoelectrochemical (PEC) measurement. The smallest transition energies Et was evaluated for bulk g-C3N4 (Et = 2.84 eV). The exfoliation by heating and ultrasonication caused both increase of transition energies Et at 3.07 eV and blue-shift and intensity increase of PL emission bands. The exfoliation by heating at 500 ºC increased photocurrent in comparison with the bulk g-C3N4 and ultrasonicated samples. This indicates the beneficial effect of the exfoliation by heating for various photocatalytic applications due to the higher mobility and separation efficiency of photo-induced carriers.
Czech name
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Czech description
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Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
NANOCON 2016: 8th International Conference on Nanomaterials - Research & Application : list of abstracts : October 19th-21st 2016, Hotel Voronez I, Brno, Czech Republic, EU
ISBN
978-80-87294-68-0
ISSN
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e-ISSN
neuvedeno
Number of pages
6
Pages from-to
98-103
Publisher name
Tanger
Place of publication
Ostrava
Event location
Brno
Event date
Oct 19, 2016
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000410656100016

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