Naslov
“Are we step closer to sustainability? Graphitic carbon nitride (g-C3N4)-based photocatalysts for the degradation of organic pollutants“

Autori
Kocijan, Martina ; Nunes, Marta ; Freire, Cristina

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts: 1st Student Congress on Materials Engineering / Sušac, Kristina ; Varga, Dominik ; Vučetić, Matea - Zagreb : Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, 2019, 26-26

ISBN
978-953-6470-87-7

Skup
I. Student Congress on Materials Engineering (eSKIM 2019)

Mjesto i datum
Zagreb, Hrvatska, 28.02.2019. - 01.03.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
graphitic carbon nitride (g-C3N4), nanocomposites, photocatalysis

Sažetak
One of the promising methodologies introduced by nanotechnology for the wastewater treatment is the semiconductor-based photocatalysis, which allows the degradation of the organic pollutants by means of solar radiation. Graphitic carbon nitride (g- C3N4) has been appointed as a promising novel metal-free photocatalyst, due to its thermal and chemical stability and appropriate band gap (about 2.7 eV), which enables absorption of visible light at around 460 nm. Therefore, intensive investigation has been focus on its photocatalytic performance, through the development and characterization of new nanohybrid photocatalysts based on g-C3N4 and TiO2 nanoparticles, for instance. In this work, we prepared bulk g-C3N4 and g- C3N4 nanosheets, and their nanocomposites with TiO2 nanoparticles (TiO2@g-C3N4). The bulk g- C3N4 powder was prepared by a thermal decomposition method, and the g-C3N4 nanosheets were obtained by thermal or liquid exfoliation of the bulk g-C3N4. The TiO2@g-C3N4 nanocomposites were prepared by the in situ synthesis of TiO2 nanoparticles by the sol-gel method. The nanomaterials were characterized by powder X-ray diffraction analysis (P-XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), UV-Vis diffuse reflectance spectroscopy and photoluminescence spectroscopy. 4-nitrophenol was used as a model pollutant, and the materials photocatalytic activities were explored. The materials characterization confirmed their successful preparation, with some of the TiO2@g-C3N4 nanocomposites showing interesting photocatalytic activities for the degradation of 4-nitrophenol.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo, Temeljne tehničke znanosti, Interdisciplinarne tehničke znanosti

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