Preparation of composite g-C3N4/TiO2 by thermal hydrolysis of titanyl sulphate in a presence of graphitic carbon nitride

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F22%3A10251883" target="_blank" >RIV/61989100:27360/22:10251883 - isvavai.cz</a>

Výsledek na webu

<a href="https://atomdec.info/intsymp-2" target="_blank" >https://atomdec.info/intsymp-2</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Preparation of composite g-C3N4/TiO2 by thermal hydrolysis of titanyl sulphate in a presence of graphitic carbon nitride

Popis výsledku v původním jazyce

The thermal hydrolysis of titanyl sulphate (TiOSO4) in the presence of bulk graphitic carbonnitride was used for preparation of g-C3N4/TiO2 composites. Bulk graphitic carbon nitride wasprepared by the thermal polymerization of melamine at 550oC. The amount of TiOSO4 used forhydrolysis varied with the aim to progressively increased the TiO2 content (10, 25 and 50 wt.%)in final composites. The samples prepared by the hydrolysis were further thermally treated at400, 450, 475, 500 and 525oC in a muffle furnace. The prepared samples were characterizedusing scanning electron microscopy coupled with energy dispersive analysis, phase compositionof the samples was revealed using X-ray diffraction method, specific surface area of the sampleswas measured using BET method. Other characterization techniques included Fourier transforminfrared spectroscopy and thermal analysis. Optical band gap of the composites was evaluatedusing Tauc approach from registered and transformed UV-VIS DRS spectra. The photodegrada-tion activity of prepared composites was tested by the degradation of Rhodamine B (RhB) under2 h long irradiation with UV or VIS light of wavelengths 368 and 420 nm, respectively. TheSEM images revealed the TiO2 are present in a form of envelope around the g-C3N4 particles.The elemental analysis revealed decreasing tendency of the carbon and nitrogen content andtogether with the values of yields of the calcination products confirm the decomposition of g-C3N4 in the presence of TiO2 if heated above the temperature 450oC. The prepared g-C3N4/TiO2composites exhibit promising alternative to pure TiO2 and g-C3N4 photocatalysts.

Název v anglickém jazyce

Preparation of composite g-C3N4/TiO2 by thermal hydrolysis of titanyl sulphate in a presence of graphitic carbon nitride

Popis výsledku anglicky

The thermal hydrolysis of titanyl sulphate (TiOSO4) in the presence of bulk graphitic carbonnitride was used for preparation of g-C3N4/TiO2 composites. Bulk graphitic carbon nitride wasprepared by the thermal polymerization of melamine at 550oC. The amount of TiOSO4 used forhydrolysis varied with the aim to progressively increased the TiO2 content (10, 25 and 50 wt.%)in final composites. The samples prepared by the hydrolysis were further thermally treated at400, 450, 475, 500 and 525oC in a muffle furnace. The prepared samples were characterizedusing scanning electron microscopy coupled with energy dispersive analysis, phase compositionof the samples was revealed using X-ray diffraction method, specific surface area of the sampleswas measured using BET method. Other characterization techniques included Fourier transforminfrared spectroscopy and thermal analysis. Optical band gap of the composites was evaluatedusing Tauc approach from registered and transformed UV-VIS DRS spectra. The photodegrada-tion activity of prepared composites was tested by the degradation of Rhodamine B (RhB) under2 h long irradiation with UV or VIS light of wavelengths 368 and 420 nm, respectively. TheSEM images revealed the TiO2 are present in a form of envelope around the g-C3N4 particles.The elemental analysis revealed decreasing tendency of the carbon and nitrogen content andtogether with the values of yields of the calcination products confirm the decomposition of g-C3N4 in the presence of TiO2 if heated above the temperature 450oC. The prepared g-C3N4/TiO2composites exhibit promising alternative to pure TiO2 and g-C3N4 photocatalysts.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2022

Kód důvěrnosti údajů

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