CO2 reduction by C3N4-TiO2 Nafion photocatalytic membrane reactor as a promising environmental pathway to solar fuels

Giuseppe Marci', Leonardo Palmisano, Elisa Isabel Garcia Lopez, Adele Brunetti, Francesca Rita Pomilla, Enrica Fontananova, Giuseppe Barbieri, Francesca Rita Pomilla

Risultato della ricerca: Articlepeer review

14 Citazioni (Scopus)

Abstract

We investigated CO2 photocatalytic reduction coupling, for the first time in literature, the assets offered by the continuous operating mode using C3N4-TiO2 photo-catalyst embedded in a dense Nafion matrix. The reactor performance was analyzed under UV–vis light in terms of productivity, selectivity and converted carbon. Reaction pressure was specifically investigated for its effect as a “driver” in determining reactor performance, modulating products removal from the reaction volume. In addition, the membrane reactor performance was explored as a function of H2O/CO2 feed molar ratio and contact time. The higher feed pressure (5 bar) led to a lesser MeOH production and a greater amount of HCHO, owing to a hindered desorption, which promoted partial oxidation reactions. Total converted carbon instead did not vary significantly with reaction pressure. Membrane reactor with C3N4-TiO2 photocatalyst resulted more performant than other photocatalytic membrane reactors in terms of carbon converted (61 μmol gcatalyst−1 h−1)
Lingua originaleEnglish
Numero di pagine8
RivistaAPPLIED CATALYSIS. B, ENVIRONMENTAL
Volume255
Stato di pubblicazionePublished - 2019

All Science Journal Classification (ASJC) codes

  • Catalysis
  • ???subjectarea.asjc.2300.2300???
  • Process Chemistry and Technology

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