Comparison of TiO2 and g-C3N4 2D/2D nanocomposites from three synthesis protocols for visible-light induced hydrogen evolutionElectronic supplementary information (ESI) available: The results of TGA and N2 sorption measurements, SEM and low-magnification TEM images, and stability test results. See DOI: 10.1039/c8cy00965a
Knowledge of the interfacial structure of nanocomposite materials is a prerequisite for rational design of nanostructured photocatalysts. Herein, TiO 2 and g-C 3 N 4 2D/2D nanocomposites were fabricated from three distinct synthetic protocols ( i.e. , co-calcination, solvothermal treatment and charg...
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Sprache: | eng |
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Zusammenfassung: | Knowledge of the interfacial structure of nanocomposite materials is a prerequisite for rational design of nanostructured photocatalysts. Herein, TiO
2
and g-C
3
N
4
2D/2D nanocomposites were fabricated from three distinct synthetic protocols (
i.e.
, co-calcination, solvothermal treatment and charge-induced aggregation), showing different degrees of enhancement (1.4-6.1 fold) in the visible-light induced photocatalytic hydrogen evolution reaction compared to the simple physical mixture. We propose that the interfacial Ti-O-N covalent bonding promotes the charge carrier transfer and separation more effectively than the electrostatic interaction, thus accelerating the photocatalytic H
2
production. Meanwhile, the exposed surface area of TiO
2
in the composite needs to be enlarged for deposition of the co-catalyst. This research sheds light on the rational design of hybrid nanocomposites based on earth-abundant elements for photocatalysis.
Knowledge of the interfacial structure of nanocomposite materials is a prerequisite for rational design of nanostructured photocatalysts. |
---|---|
ISSN: | 2044-4753 2044-4761 |
DOI: | 10.1039/c8cy00965a |