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Design and Synthesis of NTU-9/C3N4 Photocatalysts: Effects of NTU-9 Content and Composite Preparation Method
Abstract
Hybrid materials based on graphitic carbon nitride (g-C3N4) and NTU-9 metal–organic frameworks (MOF) were designed and prepared via solvothermal synthesis and calcination in air. The as-prepared photocatalysts were subsequently characterized using Brunauer–Emmett–Teller (BET) analysis, UV-Vis diffuse reflectance spectroscopy (DRS), photoluminescence (PL) emission spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The obtained NTU-9/C3N4 composites showed a greatly improved photocatalytic performance for the degradation of toluene in the gas phase under LED visible-light irradiation (max = 415 nm). The physicochemical properties and photocatalytic activities of the obtained NTU- 9/C3N4 materials were tuned by varying the NTU-9 content (5–15 wt%) and preparation method of the composite materials. For composites prepared by calcination, the photocatalytic activity increased with decreasing NTU-9 content as a result of the formation of TiO2 from the MOFs. The best photocatalytic performance (65% of toluene was photodegraded after 60 min) was achieved by the NTU-9/C3N4 sample prepared via the solvothermal method and containing 15 wt% MOF, which can be attributed to the appropriate amount and stable combination of composite components, efficient charge separation, and enhanced visible-light absorption ability. The photocatalytic mechanisms of the prepared hybrid materials depending on the preparation method are also discussed.
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Authors (6)
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Wojciech Lisowski dr hab.
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Mateusz Baluk
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Beata Bajorowicz
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- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/ma16145007
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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Materials
no. 16,
ISSN: 1996-1944 - Language:
- English
- Publication year:
- 2023
- Bibliographic description:
- Makowski D., Lisowski W., Baluk M., Klimczuk T., Bajorowicz B.: Design and Synthesis of NTU-9/C3N4 Photocatalysts: Effects of NTU-9 Content and Composite Preparation Method// Materials -Vol. 16,iss. 14 (2023), s.5007-
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/ma16145007
- Sources of funding:
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- Free publication
- Verified by:
- Gdańsk University of Technology
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