Selective photocatalytic oxidation of 5-hydroxymethyl-2-furfural to 2,5-furandicarboxyaldehyde in aqueous suspension of g-C3N4

Giuseppe Marci', Elisa Isabel Garcia Lopez, Leonardo Palmisano, Zakariae Amghouz, Igor Krivtsov, Salvador Ordóñez, Eva Díaz, José R. García

Risultato della ricerca: Articlepeer review

82 Citazioni (Scopus)

Abstract

Graphitic carbon nitride assisted partial photocatalytic oxidation of 5-hydroxymethyl-2-furfural (HMF) in aqueous medium was investigated. Different carbon nitride precursors were considered, being melamine the one yielding the most efficient photocatalyst. The obtained 30% selectivity of HMF oxidation to 2,5-furandicarboxaldehyde (FDC) is higher than those reported up to now. A further thermal exfoliation of the g-C3N4samples showed under artificial light irradiation both an enhanced photocatalytic activity in conversion of HMF, and selectivity (ca. 42â45%) to FDC. The performance of the catalysts increased when the experiments were carried out under real outdoor illumination, reaching 50% of selectivity versus FDC formation at 40% of HMF conversion. The utilization of radical scavengers revealed that O2[rad]âwas the main reactive species responsible for HMF oxidation to FDC. The photocatalytic test carried out under natural solar irradiation resulted in higher yields of FDC compared to that observed in the laboratory UV irradiated set-up, thus demonstrating the applicability of the exfoliated carbon nitride material in real-life conditions.
Lingua originaleEnglish
pagine (da-a)430-439
Numero di pagine10
RivistaAPPLIED CATALYSIS. B, ENVIRONMENTAL
Volume204
Stato di pubblicazionePublished - 2017

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.2300.2300???
  • ???subjectarea.asjc.1500.1508???

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