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Screw dislocation-driven t-Ba2V2O7 helical meso/nanosquares: microwave irradiation assisted-SDBS fabrication and their unique magnetic properties

Journal Article


Abstract


  • Triclinic (t-) Ba2V2O7 helical-like meso/nanosquares assembled from self-spiraling nanosheets have

    been controllably synthesized by a high-efficiency microwave irradiation-assisted surfactant process.

    The microstructure and morphology of the as-prepared t-Ba2V2O7 products were characterized by

    X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron

    microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The results show that the spirals of

    stacked nanosheets grow along the z-axis of microsquares, leading to the formation of a helical shape.

    Based on parallel experiments and theoretical analysis of t-Ba2V2O7 helical mesosquares at different reaction

    stages, the formation mechanism has been proposed to be a ‘‘self-assembly–dissolution–recrystallization–

    Ostwald-ripening’’ mechanism. The helical structures with uniform morphology and size may find promising

    applications in a variety of fields. The SDBS-assisted microwave irradiation method offers an easy path to

    the controllable fabrication of helical Ba2V2O7 meso/nanomaterials, which can be readily extended to

    the development of functional structures of other alkaline earth vanadates. Moreover, it is found that the

    helical-like materials exhibit unique magnetic properties, corresponding to shape evolutions with

    different particle sizes at continuous reaction time

Authors


  •   Sun, Yan (external author)
  •   Wang, Jian Li.
  •   Chen, Mingzhe (external author)
  •   Li, Chunsheng (external author)
  •   Hu, Zhenpeng (external author)
  •   Chou, Shulei

Publication Date


  • 2017

Citation


  • Sun, Y., Wang, J., Chen, M., Li, C., Hu, Z. & Chou, S. (2017). Screw dislocation-driven t-Ba2V2O7 helical meso/nanosquares: microwave irradiation assisted-SDBS fabrication and their unique magnetic properties. Journal of Materials Chemistry C, 5 (25), 6336-6342.

Scopus Eid


  • 2-s2.0-85021691247

Number Of Pages


  • 6

Start Page


  • 6336

End Page


  • 6342

Volume


  • 5

Issue


  • 25

Place Of Publication


  • United Kingdom

Abstract


  • Triclinic (t-) Ba2V2O7 helical-like meso/nanosquares assembled from self-spiraling nanosheets have

    been controllably synthesized by a high-efficiency microwave irradiation-assisted surfactant process.

    The microstructure and morphology of the as-prepared t-Ba2V2O7 products were characterized by

    X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron

    microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The results show that the spirals of

    stacked nanosheets grow along the z-axis of microsquares, leading to the formation of a helical shape.

    Based on parallel experiments and theoretical analysis of t-Ba2V2O7 helical mesosquares at different reaction

    stages, the formation mechanism has been proposed to be a ‘‘self-assembly–dissolution–recrystallization–

    Ostwald-ripening’’ mechanism. The helical structures with uniform morphology and size may find promising

    applications in a variety of fields. The SDBS-assisted microwave irradiation method offers an easy path to

    the controllable fabrication of helical Ba2V2O7 meso/nanomaterials, which can be readily extended to

    the development of functional structures of other alkaline earth vanadates. Moreover, it is found that the

    helical-like materials exhibit unique magnetic properties, corresponding to shape evolutions with

    different particle sizes at continuous reaction time

Authors


  •   Sun, Yan (external author)
  •   Wang, Jian Li.
  •   Chen, Mingzhe (external author)
  •   Li, Chunsheng (external author)
  •   Hu, Zhenpeng (external author)
  •   Chou, Shulei

Publication Date


  • 2017

Citation


  • Sun, Y., Wang, J., Chen, M., Li, C., Hu, Z. & Chou, S. (2017). Screw dislocation-driven t-Ba2V2O7 helical meso/nanosquares: microwave irradiation assisted-SDBS fabrication and their unique magnetic properties. Journal of Materials Chemistry C, 5 (25), 6336-6342.

Scopus Eid


  • 2-s2.0-85021691247

Number Of Pages


  • 6

Start Page


  • 6336

End Page


  • 6342

Volume


  • 5

Issue


  • 25

Place Of Publication


  • United Kingdom