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Journal of Materials Science
Erschienen in: Journal of Materials Science 22/2018

25.07.2018 | Chemical routes to materials

Construction of hierarchical TiO2 nanorod array/graphene/ZnO nanocomposites for high-performance photocatalysis

verfasst von: Zhongchi Wang, Chengzhi Luo, Yupeng Zhang, Youning Gong, Jun Wu, Qiang Fu, Chunxu Pan

Erschienen in: Journal of Materials Science | Ausgabe 22/2018

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Abstract

The photocatalytic performance of heterostructure photocatalysts is limited in practical use due to the charge accumulation at the interface and its low efficiency in utilizing solar energy during photocatalytic process. In this work, a ternary hierarchical TiO2 nanorod arrays/graphene/ZnO nanocomposite is prepared by using graphene sheets as bridge between TiO2 nanorod arrays (NRAs) and ZnO nanoparticles (NPs) via a facile combination of spin-coating and chemical vapor deposition techniques. The experimental study reveals that the graphene sheets provide a barrier-free access to transport photo-excited electrons from rutile TiO2 NRAs and ZnO NPs. In addition, there generates an interface scattering effect of visible light as the graphene sheets provide appreciable nucleation sites for ZnO NPs. This synergistic effect in the ternary nanocomposite gives rise to a largely enhanced photocurrent density and visible light-driven photocatalytic activity, which is 2.6 times higher than that of regular TiO2 NRAs/ZnO NPs heterostructure. It is expected that this hierarchical nanocomposite will be a promising candidate for applications in environmental remediation and energy fields.
Vorheriger Artikel One-pot synthesis of hydrophilic and hydrophobic fluorescent carbon dots using deep eutectic solvents as designer reaction media
Nächster Artikel A superhydrophobic polyacrylate film with good durability fabricated via spray coating

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Metadaten
Titel
Construction of hierarchical TiO2 nanorod array/graphene/ZnO nanocomposites for high-performance photocatalysis
verfasst von
Zhongchi Wang
Chengzhi Luo
Yupeng Zhang
Youning Gong
Jun Wu
Qiang Fu
Chunxu Pan
Publikationsdatum
25.07.2018
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 22/2018
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-018-2724-3

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