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Journal of Materials Science
Erschienen in: Journal of Materials Science 30/2020

17.07.2020 | Chemical routes to materials

One-step photodeposition synthesis of TiO2 nanobelts/MoS2 quantum dots/rGO ternary composite with remarkably enhanced photocatalytic activity

verfasst von: Ying Lei, Pengwen Guo, Mengmeng Jia, Wei Wang, Juan Liu, Junyi Zhai

Erschienen in: Journal of Materials Science | Ausgabe 30/2020

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Abstract

Constructing a composite photocatalyst with distinct structures is an efficient mean to improve the charge transfer/separation ability and increase the active sites of TiO2-based photocatalyst. For the first time, we synthesized a TiO2 nanobelts/MoS2 quantum dots (QDs)/rGO (TiO2/MoS2/rGO) ternary photocatalyst via a facile one-step photodeposition method. TiO2 nanobelts provide photoinduced electrons that facilitate formation and self-assembling of MoS2 QDs and rGO. The TiO2/MoS2/rGO ternary composites present two different structures: One is a composite structure of graphene-wrapped TiO2 nanobelt/MoS2 QDs, and the other is composed of graphene-supported TiO2 nanobelts and MoS2 QDs. Both configurations facilitate the separation of photoinduced electron–hole pairs and charge transfer. The heterostructure of zero-dimensional MoS2 QDs, one-dimensional TiO2 nanobelts, and two-dimensional graphenes endows the photocatalyst with the integrated advantages of these nanomaterials with different dimensions and provides a substantial number of active sites for photocatalytic reactions. The TiO2/MoS2/rGO ternary composites degraded rhodamine B at a rate constant that is 8.72 times faster than that of pristine TiO2 nanobelt. This study presents a facile method to synthesize an inexpensive multi-composite photocatalyst with high efficiency for renewable energy production and environmental treatments.

Graphic abstract

Vorheriger Artikel Multifunctional molecules of surfactant to support enhanced efficiency and stability for perovskite solar cells
Nächster Artikel Enhanced piezo-electro-chemical coupling of BaTiO3/g-C3N4 nanocomposite for vibration-catalysis

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Metadaten
Titel
One-step photodeposition synthesis of TiO2 nanobelts/MoS2 quantum dots/rGO ternary composite with remarkably enhanced photocatalytic activity
verfasst von
Ying Lei
Pengwen Guo
Mengmeng Jia
Wei Wang
Juan Liu
Junyi Zhai
Publikationsdatum
17.07.2020
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 30/2020
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-020-05067-7

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