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)

Brunetti A., Pomilla F.R., Marci G., Garcia Lopez E.I., Fontananova E., Palmisano L., et al. (2019). CO2 reduction by C3N4-TiO2 Nafion photocatalytic membrane reactor as a promising environmental pathway to solar fuels. APPLIED CATALYSIS. B, ENVIRONMENTAL, 255 [10.1016/j.apcatb.2019.117779].

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

Pomilla F. R.;Marci G.;Garcia Lopez E. I.;Palmisano L.;
2019-01-01

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)
Settore CHIM/07 - Fondamenti Chimici Delle Tecnologie
Settore CHIM/03 - Chimica Generale E Inorganica
Brunetti A., Pomilla F.R., Marci G., Garcia Lopez E.I., Fontananova E., Palmisano L., et al. (2019). CO2 reduction by C3N4-TiO2 Nafion photocatalytic membrane reactor as a promising environmental pathway to solar fuels. APPLIED CATALYSIS. B, ENVIRONMENTAL, 255 [10.1016/j.apcatb.2019.117779].
File in questo prodotto:
File Dimensione Formato  
Brunetti et al-Applied catal B 2019-CO2 reduction C3N4-TiO2-accepted.pdf

Open Access dal 28/05/2020

Descrizione: Articolo
Tipologia: Pre-print
Dimensione 1.94 MB
Formato Adobe PDF
1.94 MB Adobe PDF Visualizza/Apri
CO2 reduction.pdf

Solo gestori archvio

Tipologia: Versione Editoriale
Dimensione 3 MB
Formato Adobe PDF
3 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/400693
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 35
  • ???jsp.display-item.citation.isi??? 32
social impact