Using solar radiation to fuel catalytic processes is often regarded as the solution to our energy needs. However, developing effective photocatalysts that are active under visible light has proven to be difficult, often due to the toxicity, instability, and high cost of suitable catalysts. We engineered a novel photoactive nanomaterial obtained by the spontaneous electrostatic coupling of carbon nanodots with [P2W18O62]6-, a molecular catalyst belonging to the class of polyoxometalates. While the former are used as photosensitizers, the latter was chosen for its ability to catalyze reductive reactions such as dye decomposition and water splitting. We find the electron transfer within the nanohybrid to be so efficient that a charge-separated state is formed within 120 fs from photon absorption. These results are a cornerstone in the engineering of a new class of nanodevices, which are nontoxic, are inexpensive, and can carry out solar-driven catalytic processes.
Madonia A., Martin-Sabi M., Sciortino A., Agnello S., Cannas M., Ammar S., et al. (2020). Highly Efficient Electron Transfer in a Carbon Dot-Polyoxometalate Nanohybrid. THE JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 11(11), 4379-4384 [10.1021/acs.jpclett.0c01078].
Highly Efficient Electron Transfer in a Carbon Dot-Polyoxometalate Nanohybrid
Madonia A.;Sciortino A.;Agnello S.;Cannas M.;Messina F.
;
2020-04-28
Abstract
Using solar radiation to fuel catalytic processes is often regarded as the solution to our energy needs. However, developing effective photocatalysts that are active under visible light has proven to be difficult, often due to the toxicity, instability, and high cost of suitable catalysts. We engineered a novel photoactive nanomaterial obtained by the spontaneous electrostatic coupling of carbon nanodots with [P2W18O62]6-, a molecular catalyst belonging to the class of polyoxometalates. While the former are used as photosensitizers, the latter was chosen for its ability to catalyze reductive reactions such as dye decomposition and water splitting. We find the electron transfer within the nanohybrid to be so efficient that a charge-separated state is formed within 120 fs from photon absorption. These results are a cornerstone in the engineering of a new class of nanodevices, which are nontoxic, are inexpensive, and can carry out solar-driven catalytic processes.File | Dimensione | Formato | |
---|---|---|---|
2020_jpcl_madonia.pdf
Solo gestori archvio
Descrizione: Articolo principale
Tipologia:
Versione Editoriale
Dimensione
1.92 MB
Formato
Adobe PDF
|
1.92 MB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Highly Efficient Electron Transfer in a Carbon.pdf
accesso aperto
Descrizione: articolo
Tipologia:
Pre-print
Dimensione
3.54 MB
Formato
Adobe PDF
|
3.54 MB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.