This perspective paper introduces the concept that nanocarbons and related materials such as carbon dots are an interesting intrinsic photocatalytic semiconducting material, and not only a modifier of the existing (semiconducting) materials to prepare hybrid materials. The semiconducting properties of the nanocarbons, and the possibility to have the band gap within the visible-light region through defect band engineering, introduction of light heteroatoms and control/manipulation of the curvature or surface func- tionalization are discussed. These materials are conceptually different from the “classical”semiconducting photocatalysts, because semiconductor domains with tuneable characteristics are embedded in a conduc- tive carbon matrix, with the presence of various functional groups (as C = O groups) enhancing charge separation by trapping electrons. These nanocarbons open a range of new possibilities for photocatalysis both for energetic and environmental applications. The use of nanocarbons as quantum dots and photo- luminescent materials was also analysed.

Photoactive materials based on semiconducting nanocarbons - A challenge opening new possibilities for photocatalysis

PERATHONER, Siglinda
Primo
;
AMPELLI, Claudio
Secondo
;
CHEN, Shiming;PASSALACQUA, Rosalba;CENTI, Gabriele
Ultimo
2017-01-01

Abstract

This perspective paper introduces the concept that nanocarbons and related materials such as carbon dots are an interesting intrinsic photocatalytic semiconducting material, and not only a modifier of the existing (semiconducting) materials to prepare hybrid materials. The semiconducting properties of the nanocarbons, and the possibility to have the band gap within the visible-light region through defect band engineering, introduction of light heteroatoms and control/manipulation of the curvature or surface func- tionalization are discussed. These materials are conceptually different from the “classical”semiconducting photocatalysts, because semiconductor domains with tuneable characteristics are embedded in a conduc- tive carbon matrix, with the presence of various functional groups (as C = O groups) enhancing charge separation by trapping electrons. These nanocarbons open a range of new possibilities for photocatalysis both for energetic and environmental applications. The use of nanocarbons as quantum dots and photo- luminescent materials was also analysed.
2017
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11570/3104647
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