Carbon nitride photocatalysts have been prepared by different methodologies, such as chemical ultrasonic irradiation (sonochemical treatment), hydrothermal and ball milling and thermoexfoliation, and have been used for the selective oxidation of 5-hydroxymethyl-2-furaldehyde (HMF) to form 2,5-furandicarboxyaldehyde (FDC) in water suspension both under UV and natural solar irradiation. The physico-chemical features of the photocatalysts have been studied by X-ray diffraction, infrared spectroscopy, UV–Vis diffuse reflectance spectroscopy, photoluminescence spectroscopy, scanning electron microscopy, and specific surface area measurements. The results indicate that exfoliation of carbon nitrides can increase the conversion of HMF and the selectivity to FDC. In particular, samples exfoliated by both thermal and acidic ultrasonic irradiation treatments showed the best photocatalytic performance.

Akhundi, A., García-López, E.I., Marcì, G., Habibi-Yangjeh, A., Palmisano, L. (2017). Comparison between preparative methodologies of nanostructured carbon nitride and their use as selective photocatalysts in water suspension. RESEARCH ON CHEMICAL INTERMEDIATES, 43(9), 5153-5168 [10.1007/s11164-017-3046-9].

Comparison between preparative methodologies of nanostructured carbon nitride and their use as selective photocatalysts in water suspension

García-López, Elisa I.
;
Marcì, Giuseppe;Palmisano, Leonardo
2017

Abstract

Carbon nitride photocatalysts have been prepared by different methodologies, such as chemical ultrasonic irradiation (sonochemical treatment), hydrothermal and ball milling and thermoexfoliation, and have been used for the selective oxidation of 5-hydroxymethyl-2-furaldehyde (HMF) to form 2,5-furandicarboxyaldehyde (FDC) in water suspension both under UV and natural solar irradiation. The physico-chemical features of the photocatalysts have been studied by X-ray diffraction, infrared spectroscopy, UV–Vis diffuse reflectance spectroscopy, photoluminescence spectroscopy, scanning electron microscopy, and specific surface area measurements. The results indicate that exfoliation of carbon nitrides can increase the conversion of HMF and the selectivity to FDC. In particular, samples exfoliated by both thermal and acidic ultrasonic irradiation treatments showed the best photocatalytic performance.
Settore CHIM/07 - Fondamenti Chimici Delle Tecnologie
http://www.springer.com/chemistry/journal/11164
Akhundi, A., García-López, E.I., Marcì, G., Habibi-Yangjeh, A., Palmisano, L. (2017). Comparison between preparative methodologies of nanostructured carbon nitride and their use as selective photocatalysts in water suspension. RESEARCH ON CHEMICAL INTERMEDIATES, 43(9), 5153-5168 [10.1007/s11164-017-3046-9].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/278109
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