Controlled preparation and photocatalytic performance of TiO2/ZnO phase-mixed nanotubes-based nano-spheres

For the first time, by introducing the reaction of nano-ZnO and H2C2O4 in the electrospinning solution, the heterostructure of TiO2/ZnO was effectively adjusted, and the controllable particle size of nano-spheres could be tuned by simply adjusting the amount of the ZnO added. The soaking step and th...

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Bibliographic Details
Published in:Materials chemistry and physics 2022-03, Vol.279, p.125737, Article 125737
Main Authors: Jiang, Qiushi, Han, Zhaolian, Yuan, Yafeng, Cai, Chuan, Li, Jinying, Cheng, Zhiqiang
Format: Article
Language:English
Subjects:
Catalytic activity
Electrospinning
Electrospinning technology
Heterojunctions
Heterostructures
Metal oxides
Microstructure
Nanocomposites
Nanotubes
Photocatalysis
Photocatalyst
Precursors
Rhodamine
Roasting
Semiconductors
Structural analysis
Titanium dioxide
Zinc oxide
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Summary:For the first time, by introducing the reaction of nano-ZnO and H2C2O4 in the electrospinning solution, the heterostructure of TiO2/ZnO was effectively adjusted, and the controllable particle size of nano-spheres could be tuned by simply adjusting the amount of the ZnO added. The soaking step and the subsequent calcination process make ZnO, as the electrospinning solution reactant and the calcination product, fully combine with the TiO2 precursor to fully combine with the TiO2 precursor. EDS, XRD and XPS indicate the formation of phase-mixed heterojunction. According to DRS characterization, the phase-mixed structure enhances the light utilization effect. Compared with single component TiO2 nanotubes and nano-ZnO, TiO2/ZnO mixed materials exhibited enhanced photocatalytic activity and excellent photocatalytic cycling stability against rhodamine B, of which the photocatalytic mechanism was described. This research provides a new idea for the preparation of controllable metal oxide phase-mixed materials. [Display omitted] •Controllable preparation of nanotube-based nano-sphere oxide heterojunction.•Spherical nuclei and reaction introduced into electrospinning solution.•The formation mechanism of TiO2/ZnO phase mixed materials was described.•The prepared sample exhibited excellent activity for the degradation of RhB.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2022.125737